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STIHL Stihl Chainsaw 38 User's Manual

1. Master Control depending on modet Check operation F Check operation 27 Snes Clean by STIHL dealer Filter in fuel tank Check a Clean Replace filter element Se Sa Ss l a a a Fuel tank Clean Chain oil tank Clean Chain lubrication Check x 34 35 Inspect also check sharpness X Saw chain Check chain tension x 35 _ Sharpen 45 Check wear damage x 34 Guide bar Clean and turn over Deburr Replace Chain sprocket Check Air filter Glean Replace eoria Cooling inlets Clean Cylinder fins Clean A Check idle adjustment chain must not tum F Carburetor E Readjust idle Spark plug Readjust electrode gap All accessible screws and nuts RPNE not adjusting screws Retighten Inspect purna Noraini Have replaced by STIHL dealer i Inspect X ee ot Muffler Inspect spark arrestor screen x Clean or replace spark arrestor screen x A Check x Chain catcher Replace 7 50 Specifications Engine STIHL single cylinder two stroke engine 038 S Displacement 66 8 cm 4 07 cu in Bore 50 mm 1 97 in Stroke 34 mm 1 34 in Power 3 3 kw Maximum engine speed with cutting attachment 13 500 r p m Idle speed 2500 r p m Magnum Displacement 72 2 cm 4 4 cu in Bore 52 mm 2 04 in Stroke 34 mm 1 34 in Power 3 6 kW Maximum engine speed with cutting attachment 13 500 r p m Idle speed 2500 r p m For Europe only S
2. Warning There is an extreme danger of kickback during the limbing operation Do not work with the nose of the bar Be extremely cautious and avoid contacting the log or other limbs with the nose of the guide bar Do not stand on a log while limbing it you may slip or the log may roll Start limbing by leaving the lower limbs to support the log off the ground When underbucking freely hanging limbs a pinch may result or the limb may fall causing loss of control If a pinch occurs stop the engine and remove the saw by lifting the limb 19 Warning Be extremely cautious when cutting limbs or logs under tension spring poles The limbs or logs could spring back toward the operator and cause loss of control of the saw and severe or fatal injury to the operator Bucking Bucking is cutting a log into sections Warnings 1 20 When bucking do not stand on the log Make sure the og will not roll downhill If on a slope stand on the uphill side of the log Watch out for rolling logs Cut only one log at a time Shattered wood should be cut very carefully Sharp slivers of wood may be caught and flung in the direction of the operator of the saw When cutting small logs place log through V shaped supports on top of a sawhorse Never permit another person to hald the log Never hold the log with your leg or foot 3 Sikak E Logs under strain Risk of pinching Always start relieving c
3. The amount of wear will vary depending upon usage conditions under which the saw is used and other factors Excessive wear will reduce the effectiveness of the ghain brake and can render it inoperable For the proper and effective operation of the chain brake the brake band and clutch drum must be kept free of dirt grease and other foreign matter which may reduce friction of the band on the drum For these reasons each STIHL chain saw should be returned to trained personnel such as your STIHL servicing dealer for periodic inspection and servicing of the brake system according to the following schedule Heavy usage every three months Moderate usage twice a year Occasional usage annually The chainsaw should also be returned immediately for maintenance whenever the brake system cannot be thoroughly cleaned or there is a change in its operating characteristics Additionally the daily maintenance schedule for your chainsaw set forth in your STIHL Owner s Manual should be strictly followed Store chainsaw in a dry place and away from children Before storing for longer than a few days always empty the fuel tank 21 22 Fuel Your two stroke engine requires a mix ture of brand name gasoline and quality two stroke engine oil with the classifi cation TC Use regular branded unleaded gasoline with a minimum octane number of 90 ROZ U S A Canada pump octane min 89 If the octane number of the regular
4. You must observe certain angles when resharpening the chain cutters A Filing angle B Side plate angle C Top plate cutting angle amp oO 2 3 ved oO Chain type Angle A B C Rapid Micro RM 30 85 Rapid Super RS 30 60 This angle is difficult to measure becau se the top plate cutting edge is very short It is obtained automatically if the fi ling and side plate angles are main talned as specified Cutter shapes Micro Semi chisel Super Full chisel Specified angles A B and C are obtained automatically if recommen ded files or sharpening tools and correct settings are used Furthermore the angles must be the same on all cutters If angles are uneven Chain will run roughly not in a straight line wear quickly and finally break As these requirements can be met only after sufficient and constant practice Use a file holder A file holder must be used for manual resharpening of Super chain The correct filing angle is marked on the file holder Chain pitch File holder Inch mm Part No 0 325 8 25 5605 750 4328 3 8 9 32 5605 750 4329 45 Other filing and sharpening aids for all types of chain FG 1 filing tool attaches to guide bar Part No 5603 000 7500 FG 2 Filerite mounts to workbench Part No 5604 000 7501 USG electric grinder Part No 5203 201 0403 Operating instructions are supplied with all tools 46 85
5. I to switch the heating on The heating system is designed to heat the front and rear handles to an adequate level There is no risk of over heating during long periods of continuous operation The whole heating system is maintenance free Intake Air Preheating Special Accessory Plug fitted in shroud The intake air preheating kit prevents the air filter and carburetor icing up at low outside temperatures as well as the entry of snow into the fan housing Carry out the conversion by removing the standard car buretor box cover taking the plug 1 out of the shroud and fitting it in the cutout in the crankcase to the right of the flywheel When the special carburetor box cover with seal 2 is fitted the intake air is preheating by the cylinder The cover plate 3 is fitted in the fan housing to ensure that no snow can be drawn in through the intake slots The standard guard in the sprocket cover can also be ex changed for the smooth contour guard included in the kit to ensure optimum chip discharge even in wet conditions Top Plug fitted in crankcase Bottom Special carburetor box cover with seal cover plate fitted in fan housing Important To avoid the risk of engine overheating the conversion to intake air preheating may only be carried out under the following conditions Carburetor box cover with seal below 10 C 50 F Cover plate in fan housing below 10 C 14 F Detailled ins
6. standards and ordinances Warning Minors should never be allowed to use a chainsaw Bystanders especially 4 000BA036 LA children and animals should not be allowed in the area where a chainsaw is in use Never let the saw run unattended Store it in a locked place away from children and empty the fuel tank before storing for longer than a few days Do not lend or rent your chainsaw without the Owner s Manual Be sure that anyone using your saw reads and under stands the information contained in this manual These safety precautions and warnings apply to the use of all STIHL chainsaws Different models may have different parts and controls See the appropriate 000BA037 LA section of your Owner s Manual for a description of the controls and function of the parts of your model saw Safe use of a chainsaw involves 1 the operator 2 the saw 3 the use of the saw THE OPERATOR Physical Condition You must be in good physical condition and mental health and not under the influence of any substance drugs alcohol which might impair vision dexterity or judgment Do not operate a chainsaw when you are fatigued Be alert If you get tired while operating your chainsaw take a break Tiredness may result in loss of control Working with any chainsaw can be strenuous If you have any condition that might be aggravated by strenuous work check with your doctor before operating a chainsaw
7. 15 Use extreme caution when cutting small size brush and saplings because slender material may catch the saw chain and be whipped toward you Never operate a chain saw that is damaged or improperly adjusted or 16 When cutting a limb that is under that is not completely and securely tension be alert for spring back assembled Be sure that the saw chain stops moving when the 17 This gas powered saw is classified throttle control trigger is released by CSA as a class 1A saw Never adjust the guide bar or saw chain when the engine is operating Beware of carbon monoxide poisoning Operate the chain saw in well ventilated areas only Do not attempt a pruning or limbing operation in a standing tree unless specifically trained to do so Guard against kickback Kickback is the upward motion of the guide bar that occurs when the saw chain at the nose of the guide bar contacts an object Kickback can lead to dangerous loss of control of the chain saw Allow your chain saw to cool before refuelling and do not smoke Don t allow other persons or animals close to a running chain saw or close to where a tree is being felled 55 Key to symbols STIHL MODEL XXX CLASS XX amp Fk a XX XX Andreas Stihl XXXX XX XX ar Guide bar length SOC Chain type Kickback angle with without chain brake Contact of the guide bar tip with any object should be avoided Always use two
8. 70 Ua 90 TT o WVA E For checking angles STIHL filing gauge Part No 1110 893 4000 A universal tool for checking the filing and side plate angles depth gauge setting and cutter length Also cleans the guide bar groove and oil inlet hole For lowering depth gauges Triangular file Part No 0811 421 8971 Flat file Part No 0814 252 3356 Special accessory 2 8 File correctly If you use the FG 2 or USG Remove the chain from the bar and sharpen according to instructions supplied with the tool If you use a file holder or the FG 1 Leave the chain on the bar Clamp the bar in a vise if necessary Lock the chain push hand guard forward To rotate the chain pull hand guard against front handle Sharpen chain frequently take away as little metal as possible two or three strokes of the file are usually enough Always file from the inside to the outside of the cutter 689BA011 KN The file only sharpens on the forward stroke lift the file off the cutter on the back stroke Hold the file horizontally for all chain types at right angle to side of guide bar and file according to the angles marked on the filing tool 689BA012 KN If you use Super chains in hard wood or frozen timber hold file so that it slopes upward at 10 fora longer edge life and smoother cutting action Avoid touching the tie straps and drive links with the file Rotat
9. Warning Prolonged use of chainsaws or other machines exposing the operator to vibrations may produce whitefinger disease Raynaud s phenomenon or carpal tunnel syndrome These conditions reduce the hand s ability to feel and regulate temperature produce numb ness and burning sensations and may cause nerve and circulation damage and tissue necrosis Many STIHL models are available with an anti vibration AV system designed to reduce the transmission of vibrations created by the engine and cutting attachment to the operator s hands An anti vibration system is recommended for those using chainsaws on a regular or sustained basis Heated handles help to reduce the risk of whitefinger disease and are recommen ded for cold weather use Most STIHL powerheads are available with heated handles S lt a Q S Anti vibration systems and heated handles do not guarantee that you will not sustain whitefinger disease or carpal tunnel syndrome Therefore continual and regular users should monitor closely the condition of their hands and fingers If any of the above symptoms appear seek medical advice immediately Proper Clothing Clothing must be sturdy and snug fitting but allow complete freedom of movement Avoid loose fitting jackets scarfs neckties jewelry flared or cuffed pants unconfined long hair or anything that could become entangled with the saw or brush Wear overalls or jeans with a reinfo
10. fanning in toward the hinge Then using the bumper spike as a pivot reposition the saw for the next cut 2 lt a S S Avoid repositioning the saw more than necessary When repositioning for the next cut keep the guide bar fully engaged in the kerf to keep the felling cut straight If the saw begins to pinch insert a wedge to open the cut On the last cut do not cut the hinge Plunge cut method Timber having a diameter more than twice the length of the guide bar requires the use of the plunge cut method before making the felling cut First cut a large wide felling notch Make a plunge cut in the center of the notch The plunge cut is made with the guide bar nose Begin the plunge cut by applying the lower portion of the guide bar nose to the tree at an angle Cut until the depth of the kerf is about the same as the width of the guide bar Next align the saw in the direction in which the recess is to be cut With the saw at full throttle insert the guide bar in the trunk Enlarge the plunge cut as shown in illustration Warning There is an extreme danger of kickback at this point Extra caution must be taken to maintain control of the saw To make the felling cut follow the sectioning method described previously If you are inexperienced with a chainsaw plunge cutting should not be attempted Seek the help of a professional Limbing Limbing is removing the branches from a fallen tree
11. more aggressive chains these bars may be less effective in reducing kickback and may result in higher kickback forces Low kickback chain Some types of saw chain have specially designed components to reduce the force of nose contact kickback STIHL has developed low kickback chain for your powerhead Warning A dull or improperly sharpened chain may reduce or negate the effects of the design features intended to reduce kickback energy Improper lowering or sharpening of the depth gauges or shaping of the cutters may increase the chance and the potential energy of a kickback Always cut with a properly sharpened chain Warning 8 Reduced kickback bars and low kickback chains do not prevent kickback but they 9 are designed to reduce the risk of kick back injury They are available from your STIHL dealer 10 Warning Even if your saw is equipped with a 11 Quickstop a reduced kickback bar and or low kickback chain this does not eliminate the risk of injury by kickback 12 Therefore always observe all safety precautions to avoid kickback situations To avoid kickback The best protection from personal injury that may result from kickback is to avoid kickback situations 1 Hold the chainsaw firmly with both hands and maintain a secure grip 2 Be aware of the location of the guide bar nose at all times 3 Never let the nose of the guide bar contact any object Do not cut limbs with the nose of the
12. Always press spark plug boot snugly onto spark plug terminal of the proper size Note If terminal has detachable SAE adapter nut it must be attached A loose connection between spark plug terminal and ignition wire connector in the boot may create arcing that could ignite combustible fumes and cause a fire Keep spark plug clean and make sure ignition lead is in good condition Warning Do not operate your chainsaw if the muffler is damaged missing or modified An improperly maintained muffler will increase the risk of fire and hearing loss Never touch a hot muffler or burn will result If your muffler was equipped with a spark arresting screen to reduce the risk of fire e g in the USA Canada and Australia never operate your saw if the screen is missing or damaged Remember that the risk of forest fires is greater in hot or dry weather Keep the chain bar and sprocket clean replace worn sprockets or chains Keep the chain sharp You can spot a dull chain when easy to cut wood becomes hard to cut and burn marks appear on the wood Keep the chain at proper tension Tighten all nuts bolts and screws except the carburetor adjustment screws after each use Warning In order for the chain brake on your STIHL chainsaw to properly perform its function of reducing the risk of kickback and other injuries it must be properly maintained Like an automobile brake a chainsaw chain brake incurs wear each time it is engaged
13. adjusting screws 1 and 2 1 for full load and 2 for idle Turn screws clockwise leaner for high altitude operation or counterclockwise richer for operation at sea level Note that even slight alterations on the adjusting screws have a noticeable effect on the engine s running behavior Only carry out carburetor adjustments after cleaning the air filter and warming up the engine Caution The setting of the high speed adjusting screw not only affects power output but also the maximum off load engine speed If the setting is too lean screw turned too far clockwise the maximum permissible engine speed will be exceeded This can cause engine damage Regulating idle speed adjusting screw brought about by lack of lubrication and overheating in particular Corrections to the setting of the high speed adjusting screw may be carried out only if an accurate ta chometer is available to check the maximum engine speed of 12 500 r p m with bar and correctly tensioned chain Basic setting If it is necessary to readjust the carburetor again from the beginning first carry out the basic setting to obtain a start ing point for fine adjustment To do this carefully screw the two adjusting screws down onto their seats clockwise Then make the following adjustment High speed adjusting screw H back off 1 complete turn Low speed adjusting screw L back off 1 complete turn If you have no means of checking the maximum engine speed
14. bar nose Accelerate up to full throttle for no more than 3 seconds the chain must not rotate The hand guard must be free of dirt and move freely Chain brake maintenance The chain brake is subject to normal wear and tear It must therefore be checked and serviced regularly by trained personnel e g STIHL dealer at the follo wing intervals Full time professional users every 3 months Semi professional farm and construcction industry every 6 months Hobby and occasional users every 12 months 27 28 Notes on Operation Starting for first time A factory new machine should not be run at high revs full throttle off load for the first three tank fillings This avoids unnecessary high loads during the break in period As all the moving parts have to bed in during the break in period the frictional resistances in the engine are greater during this period For this reason the engine only de velops its maximum power after about 5 to 15 tank fillings The carburetor setting must never be made leaner in order to achieve an apparent increase in power as this could cause the engine to exceed its maximum permissible rpm see Specifications and Carburetor During operation After a long period of working at full load it is advisable not to shut off the engine immediately but let it run for a short while at idling speed This allows the heat which has been generated in the engine during full throttle
15. do not set the high speed adjusting screw any leaner by turning it beyond the basic setting 37 38 Notes for adjusting idle speed Engine stops while idling Turn idle speed adjusting screw LA clockwise until chain begins to run Then back off one quarter of a turn Chain runs when engine is idling Turn idle speed adjusting screw LA counterclockwise until chain stops running and then turn it about another quarter turn in the same direction Erratic idling behavior poor acceleration Idle setting too lean turn low speed adjusting screw L counterclockwise until engine runs and accelerates smoothly Exhaust smokes at idle speed Idle speed setting too rich turn low speed adjusting screw L clockwise until engine speed drops Then turn screw back one quarter turn and check that engine still accele rates smoothly when you open the throttle A correction at the low speed adjusting screw usually necessitates a change in the setting of the idle speed adjusting screw LA Apart from minor readjustments you should leave all car buretor setting and repair work to your STIHL dealer STIHL dealers have trained staff and all the necessary servicing tools and equipment Replacing the Chain Sprocket Removing the side plate Spur sprocket First disengage the chain brake by pulling the hand guard back against the handlebar Now remove the chain sprocket cover Oilomatic chain and guide bar Release and uns
16. fall on the operator When felling on a slope the operator should stand on the uphill side if possible When felling in the vicinity of roads railways and power lines etc take extra precautions Inform the police utility company or railway authority before beginning to cut When felling maintain a distance of at least 21 2 tree lengths from the nearest person Note The noise of your engine may drown any warning call S 2 z ao amp a 15 001BA040 LA Felling Instructions First clear the tree base and work area from interfering limbs and brush and clean its lower portion with an axe Then establish two paths of escape B and remove all obstacles This paths should be generally opposite to the planned direction of the fall of the tree A and about at a 45 angle Place all tools and equipment a safe distance away from the tree but not on the escape paths 16 If the tree has large buttress roots cut into the largest buttress vertically first horizontally next and remove the resulting piece f f q f q 001BA052 ST Conventional cut A felling notch determines the direction of the fall For a conventional cut Properly place felling notch perpendicular to the line of fall close to the ground Cut down at app 45 degree angle to a depth of about 1 2 to 1 4 of the trunk diameter Make second cut horizontal Remove resulting 45 degree piece Open face tec
17. grade gasoline in your area is lower use premium unleaded fuel Fuel with a lower octane number may result in preignition causing pinging which is accompanied by an increase in engine temperature This in turn increases the risk of the piston seizure and damage to the engine The chemical composition of the fuel is also important Some fuel additives not only detrimentally affect elastomers carburetor diaphragms oil seals fuel lines etc but magnesium castings as well This could cause running problems or even damage the engine For this reason it is essential that you use only name branded fuels Use only STIHL two stroke engine oil or equivalent branded two stroke air cooled engine oils with the classification TC for mixing We recommend STIHL 50 1 two stroke engine oil since it is specially formulated for use in STIHL engines The mix ratio with STIHL oil is 50 1 50 parts gasoline to 1 part oil or 25 1 25 parts gasoline to 1 part oil with other branded two stroke air cooled engine oils Do not use BIA or TCW two stroke water cooled mix oils Take care when handling gasoline Avoid direct contact with the skin and avoid inhaling fuel vapour The canister should be kept tightly closed in order to avoid any moisture getting into the mixture The fuel tank and the canister in which fuel mix is stored should be cleaned from time to time Fuel mix ages Only mix sufficient fuel for a few days work not to exceed 30 days of
18. hands when operating the chain saw 56
19. operation to be dissipated by the flow of cooling air and also protects engine mounted components ignition carburetor from thermal overload Spark plug An incorrect carburetor setting the wrong fuel mix too much engine oil in the gasoline a dirty air filter and un favorable running conditions mostly at part throttle etc affect the condition of the spark plug These factors cause deposits to form on the insulator nose which may result in trouble in operation Top Spark plug in good condition Bottom Spark plug fouled because of incorrect running conditions If the engine is down on power difficult to start or runs poorly at idling speed check the spark plug before looking any further If the spark plug is dirty clean it and check the electrode gap Readjust if necessary the correct gap is 0 5 mm 0 02 in The spark plug should be replaced after about 100 operating hours or earlier if the electrodes are badly eroded In order to ensure trouble free operation it is necessary to rectify the faults which have caused fouling of the spark plug Master Control The Master Control lever 1 controls the various engine functions Depending on its position it acts on the carbu retor s choke valve the throttle trigger 2 or the ground contact for stopping the engine Note the following when operating the Master Control lever The position between START and STOP is the normal operating position Th
20. sprocket 7 tooth 3 8 1119 640 2000 Rim sprocket 7 tooth 3 8 0000 642 1223 Warranty claims following repairs can be accepted only if the repair has been performed by an authorized STIHL Service Shop using original STIHL spare parts Original STIHL parts can be identified by the STIHL part number the logo STIHL and the STIHL parts symbol 452 The symbol may appear alone on small parts 53 Certificate of conformity This Certificate of Conformity applies only in the countries of the European Union Certificate of conformity Clause 8 of Directive 89 392 EEC the undersigned Andreas Stihl Badstr 115 D 71336 Waiblingen certify that the new machine described below Category Chain saw Make STIHL Model 038 Serial identification 1119 conforms to the specifications of Directive 89 392 EEC and 89 336 EEC The product has been developed and manufactured in compliance with the following standard EN 608 EN 50082 CISPR 12 The CE type examination was carried out by CTBA 10 avenue de Saint Mande F 75012 Paris Ex number 038 M 380 080 A 0032 01 95 Done at Waiblingen January 1996 ANDREAS STIHL Ops Gl ckle Director Engineering Services and Product Research 54 Quality Certification DIN ISO 9001 N All STIHL products comply with the highest quality standards An independent organization has certified that all products manufactured by STIHL meet the strict requirements
21. storage Store in approved safety fuel canisters only When mixing pour oil into the canister first and then add gasoline Gaso STIHL Other branded line engine oil 50 1 TC oils 25 1 Liters Liters cc Liters cc 1 0 02 20 0 04 40 5 0 10 100 0 2 200 10 0 20 200 0 4 400 15 0 30 300 0 6 600 20 0 40 400 0 8 800 25 0 50 500 1 0 1000 Gaso STIHL Other branded line engine oil 50 1 TC oils 25 1 US gal US fl oz US fl oz 1 2 6 5 1 21 2 64 12 8 5 12 8 25 6 Before fueling clean the filler cap and the area around it to ensure that no dirt falls into the tank Always thoroughly shake the mixture in the canister before fueling your machine Warning In order to reduce the risk of burns or other personal injury from escaping gas vapor and fumes remove the fuel filler cap carefully so as to allow any pressure build up in the tank to release slowly Warning After fueling tighten fuel cap as securely as possible by hand Use a suitable tool e g screwdriver end of combination wrench to tighten slotted fuel caps Change the fuel pick up body every year Before storing your machine for a long period drain and clean the fuel tank and run engine until carburetor is dry Chain lubricant Only ecologically acceptable high quality chain oil preferably STIHL chain lubricant with non fling additive or the rapidly biodegradable STIHL Bioplus should be used for automatic durable lubrication of the saw ch
22. Oil Filler Cap For closing the oil tank Fuel Filler Cap For closing the fuel tank Clutch Couples engine to chain sprocket when engine is accelerated beyond idle speed Not illustrated Anti Vibration System The anti vibration system in cludes a number of buffers designed to reduce the transmission of vibrations created by the engine and cutting attachment ti the operator s hands not illustrated SoS Safety Precautions The use of any chainsaw may be hazardous The saw chain has many sharp cutters if the cut ters contact your flesh they will cut you even if the chain is not moving At full throttle the chain speed can reach 45 mph 20 m s It is impor tant that you read fully understand and observe the following safety precautions and wamings Read the Owner s Manual and the safety instructions periodically Pay special attention to the section on reactive forces Warning Reactive forces including kickback can be dangerous Careless or improper use of any chainsaw may cause serious or fatal injury All safety precautions that are generally observed when working with an axe or a hand saw also apply to the operation of chainsaws However because a chain saw is a high speed fast cutting power tool special safety precautions must be observed to reduce the risk of personal injury Have your STIHL dealer show you how to operate your chainsaw Observe all applicable local safety regulations
23. STAL O38 Instruction Manual Owner s Manual Assembling Safety Precautions Operating Instructions Maintenance Contents Main Parts of the Saw Definitions Safety Precautions The Operator The Saw The Use of the Saw Maintenance Repair and Storing Fuel Chain Oil Mounting the Bar and Chain Oil Quantity Control Chain Brake Notes on Operation Master Control Starting Electrically Heated Handles CE Printed on chlorine free paper Printing inks contain vegetable oils paper is recyclable 1996 Andreas Stihl Waiblingen 0458 1210121 M5 D6 T Printed in Germany Intake Air Preheating Guide Bar Chain and Sprocket Air Filter Carburetor Replacing the Chain Sprocket Starter Assembly Maintaining and Sharpening Saw Chain Maintenance Chart Specifications Ordering Spare Parts Certificate of Conformity for Europe Quality Certification For Canada only Cutting Attachment Important Safety Precautions Key to Symbols 52 56 This Manual contains operating and safety instructions for all STIHL 038 series power saws Pay special attention to the safety precautions outlined on pages 4 to 21 Allow only persons who understand this Manual to operate your chain saw To receive maximum performance and satisfaction from your STIHL chain saw itis important that you read and under stand the maintenance and safety precautions before using your saw Contact your STIHL dealer or the STIHL distribut
24. ain and guide bar The quality of the lubricant has a decisive effect on the service life of the saw chain and guide bar Only special purpose chain oil should therefore be used One of the following HD single range oils may be used in exceptional cases if a special purpose chain lubricant is not available At outside temperatures of 10 C 40 C SAE 30 10 C 10 C SAE 20 10 C 30 C SAE 20W 10W Waste oil must not be used Waste oil does not have the required lubricating properties and is unsuitable for chain lubrication Waste oil is environmentally harmful and can cause skin cancer as a result of prolonged and repeated contact Fill chain lubricant o o lt G iv Thoroughly clean the filler cap and surrounding area so that dirt cannot fall into the tank Fill with chain lubricant whenever the chainsaw is refuelted Asmall amount of lubricant remains in the oil tank when the fuel tank is empty If the amount of lubricant in the oil tank does not decrease this may be due to a fault in the lubricant supply check lubri cation of the chain clean the oil ducts and contact the STIHL service centre if necessary 23 24 Mounting the Bar and Chain Top Removing chain sprocket cover Center Backing off tensioning nut Chain brake released Bottom Fitting saw chain on guide bar The guide bar and Oilomatic chain are supplied separately To mount them first u
25. ar and worm with STIHL multipurpose grease when installing The circlip 6 must be fitted so that both its ends locate on the top of a tooth as illustrated Rim sprocket First remove the chain sprocket cover Oilomatic chain and guide bar Insert a pointed knife or similar too behind the E clip 8 to ease it clear of the warts on the thrust washer 10 and then use a small screwdriver to prise the E clip off the crankshaft Take off the thrust washer and rim sprocket 11 Fit the new rim sprocket so that the side with the cavities faces outward Finish off by refitting the thrust washer 10 and E clip 3 on the crankshaft Only original STIHL clutch drums may be installed Top Removing the drive worm Center Circlip correctly fitted Bottom Rim sprocket in position Starter Assembly Remove the mounting screws Replacing a broken starter rope First remove the three screws which retain the fan housing Next lift the base of the fan shroud away from the crank case and slide downward and away from the engine Using a screwdriver or a suitable pair of pliers carefully remove the spring clip from the starter post groove The rope rotor together with the pawl can now be liftet off Remove any remaining rope from the rope groove in the rotor Thread in a new starter rope 4 5 mm 0 18 in dia meter and 1000 mm 40 in long and secure it to the rope rotor with a simple overhand knot Seal the ends of th
26. arting from cold immediately open the choke Master Control to START and continue cranking As soon as the engine is running immediately squeeze the throttle trigger 8 to disengage it from the starting throttle position The Master Control lever moves from the start position to its normal operating position and the engine runs at idle speed Damage may be caused to the clutch if the engine is not immediately returned to idle speed 6 Disengage the chain brake before starting work by pul ling the hand guard 1 back toward the handlebar 5 7 The engine is stopped by moving the Master Control lever 2 to STOP Top Starting on the ground Center Master Control lever in normal operating position throttle trigger in idle position Bottom Master Control lever on STOP imama 32 Caution If the Master Control lever is in the START position it must first be disengaged from this position by squeezing the throttle trigger Only then can the Master Control lever be moved to the STOP position Other points to observe when starting The choke valve is operated by the Master Control lever see Master Control When starting a cold engine only keep the Master Control lever in the CHOKE position until the engine fires Then move Master Control lever immediately to START even if the engine stops and you have continue cranking If you leave the Master Control
27. can be reversed and work against the operator If the rotating chain is suddenly stopped by contact with any solid object like a log or branch or is pinched the reactive forces may occur instantly These reactive forces may result in loss of control which may in turn cause serious or fatal injury An understanding of the causes of these reactive forces may help you avoid loss of control The most common reactive forces are kickback pushback pull in 001BA035 LA Kickback occurs when the upper quadrant of the bar nose contacts a solid object or is pinched The reaction of the cutting force of the chain causes a rotational force on the chainsaw in the direction opposite to the chain movement This may fling the bar up and back in an uncontrolled arc mainly in the plane of the bar Under some cutting circumstances the bar moves towards the operator who may suffer severe or fatal injury Kickback may occur when the nose of the guide bar is pinched unexpectedly unintentionally contacts solid material in the wood or is incorrectly used to begin a plunge or boring cut It may also occur during limbing The greater the force of the kickback reaction the more difficult it is for the operator to control the saw Many factors influence the occurrence and force of the kickback reaction These include chain speed the speed at which the bar and chain contact the object the angle of contact the co
28. chain and pull you off balance To avoid pull in 1 Always start a cut with the chain rotating at full speed and the bumper spike in contact with the wood 001BA054 LA 2 Pull in may also be prevented by using wedges to open the kerf or cut 2 Donotcut more than one log at a time 3 Do not twist the saw when withdrawing the bar from a plunge cut or underbuck cut because the chain can pinch Pull in Pull in occurs when the chain on the bottom of the bar is suddenly stopped The chain of the bottom of the bar stops when it is pinched caught or encounters a foreign object in the wood The reaction of the chain pulls the saw forward and may cause the operator to lose control Cuiting Techniques Felling Felling is cutting down a tree Before felling a tree consider carefully all conditions which may affect the direction of fall including The intended direction of the fall The natural lean of the tree Any unusually heavy limb structure Surrounding trees and obstacles The wind direction and speed Warning Always observe the general condition of the tree Inexperienced users should never attempt to cut trees which are decayed or rotted inside or which are leaning or otherwise under tension There is an increased risk that such trees could snap or split while being cut and cause serious or fatal injury to the operator or bystanders Also look for broken or dead branches which could vibrate loose and
29. chainsaw when the guide bar is in a cut or kerf When you pull the starter grip do not wrap the starting rope around your hands Do not allow the grip to snap back but guide the starter rope slowly back to permit the rope to rewind properly Failure to follow this procedure may result in injury to hand or fingers and may damage the starter mechanism Important adjustments Warning To reduce the risk of personal injury from loss of control or contact with the running chain do not use a saw with incorrect idle adjustment At correct idle speed the chain should not rotate For directions on how to adjust idle speed see the appropriate section of your Owner s Manual If you cannot set the correct idle speed have your STIHL dealer check your saw and make proper adjustments or repairs After adjusting a chain start the saw let the engine run for a while then switch engine off and recheck chain tension Proper chain tension is very important at all times Working Conditions Operate your chainsaw outdoors only in a ventilated area even if your chainsaw is equipped with a catalytic converter The muffler and other parts of the engine e g fins of the cylinder spark plug become hot during operation and remain hot for awhile after stopping the engine To reduce risk of burns do not touch the muffler and other parts while they are hot Operate the saw under good visibility and daylight conditions only Don t work al
30. crew the six pan head screws which hold the side plate 1 and cover 2 Insert a pointed knife or similar tool behind the E clip 3 to ease it clear of the warts on the thrust washer 4 and then use a small screwdriver to prise the E clip off the crank shaft Pull off the thrust washer and use circlip pliers 5910 893 1805 special accessory available from your STIHL dealer to take the circlip 5 off the chain sprocket The washer 6 can now be removed from the chain sprok ket Removal of this washer 6 is made easier if you hold the chain sprocket 7 steady and prise the cover 2 slightly away from the crankcase Then take off the cover as well Only original STIHL chain sprockets may be installed Top Unscrewing the cover Center Removing E clip Bottom Removing circlip 39 40 Remove the oil pump drive worm 8 from the pump shaft by turning it clockwise and pulling it at the same time The chain sprocket 7 can now be pulled off the crankshaft to gether with the spur gear 9 and needle cage The spur gear 9 can be prised off the chain sprocket 7 with the aid of two screwdrivers Clean the stub of the crankshaft wash the needle cage spur gear 9 and worm 8 in clean gasoline Lubricate the needle cage with STIHL multipurpose grease Reverse the above sequence for reassembly Examine spur gear 9 and worm 8 for worn or broken teeth and re place if necessary Coat the teeth of the spur ge
31. crewdriver to un screw the two slotted nuts The two part air filter assembly can now be pulled off the studs Prise apart the two halves of the filter with a screwdriver For the daily cleaning it will do if both filter parts and the prefilter in the carburetor box cover are cleaned with a natural bristle paint brush To clean the element first knock it out on the palm of your hand and then wash it in non flammable cleaning solution lukewarm soapy water engine cleaner etc and blow out with compressed air if possible If the wire mesh is damaged on either half of the air filter or if the flocking is damaged always fit a new part Re install the air filter in the reverse sequence described above making sure that the choke mechanism is not damaged We recommend that you have a spare filter available A badly plugged filter should be serviced by your local dealer Top Releasing slotted nut Center Prising apart the two halves of the filter Bottom Air filter with choke valve in position Carburetor 1 High speed adjusting screw 2 Low speed adjusting screw 3 Idle speed adjusting screw The carburetor has been adjusted for optimum perform ance under the barometric pressure and climatic condi tions at the factory 800 m 1000 ft above sea level If the conditions at your operating site are different it may be necessary to change the carburetor setting to achieve maximum engine power Make the correction with
32. e 8 up and tension the Oilomatic chain until it lies against the underside of the bar While still holding the bar nose up tighten down the two hexagon nuts 1 firmly The Oilomatic chain is correctly tensioned when it fits snugly against the underside of the bar but can still be pulled easily along the bar by hand Note that the chain brake must be released for this purpose 26 Top Holding bar nose and tightening one hexagon nut Bottom Checking chain tension Proper chain tension and lubrication are critically impor tant in respect of cutting performance and the service life of the whole cutting attachment Always check chain lubri cation before starting work Chain tension should be checked frequently during cutting work and corrected as necessary For further details see Chapter Bar Chain and Sprocket Oil Quantity Control Adjusting screw in minimum position Adjusting screw in E Ematic position te Adjusting screw in maximal position Different quantities of oil are required for different bar lengths types of wood and cutting techniques to ensure adequate lubrication of the bar and chain The feed rate of the oil pump can be varied to suit requirements by means of the adjusting screw on the underside of the machine The oil feed rate is increased by turning the adjusting screw clockwise or decreased by turning it counter clockwise If you use a STIHL Ematic guide bar in normal operati
33. e rope to prevent ravelling with a match or lighter flame Thread the other end of the rope through the rope guide hole in the fan housing from inside pass it through the starter grip in an upward direction and secure it with a figure 8 or looped overhand knot see diagram of knots Do not rewind the rope on the rotor at this time Clean and lubricate the rope rotor s bushing with a non resinous oil slide the rotor on the starter axle or post and align the rewind spring anchor loop exposed through the Top Possible special knots Bottom Component parts of the starter assembly 4i 42 Installing the spring clip center opening in the rewind spring housing with the not ched section of the rib on the back of the rope rotor Ro tate the rotor back and forth until the slotted area engages the starter rewind spring anchor loop Now insert pawl in rope rotor and press spring clip onto starter post with a suitable pair of pliers making sure that the spring clip engages on the pawl s guide bin and points in the clockwise direction Then tension rewind spring Replacing a broken rewind spring Remove the rope rotor as above The spring housing to gether with the rewind spring can then be removed from the fan housing by turning the fan housing over and let it drop out of the recess in the fan housing A replacement spring and spring housing are supplied as an assembly Lubricate the spring with a few drops of non resinous o
34. e safety throttle lock 3 must be pressed down before the Master Control lever 1 is moved from the normal operating position to START It is possible to move from START to CHOKE or vice versa without touching any other controls In the START position the choke valve is open and the throttle trigger is in the starting throttle position When in this position the Master Control lever 1 is locked by the throttle lever and must not be forced into the normal operating position It returns automatically to the normal operating position as soon as the throttle trigger 2 is squeezed In the CHOKE position cold start the choke valve is closed and the throttle trigger is in the starting throttle position In the STOP position the ground contact engages the contact spring this cuts out the ignition system Top Choke valve activated by Master Control lever Choke position Center Master Control lever locked by throttle lever start position Bottom Ground contact touching contact spring stop position 29 30 Starting Top Master Control lever on CHOKE cold start Center Master Control lever on START warm start Chain brake engaged Bottom Starting above the ground Regardless of the starting method choosen maintain secure footing and be sure that the guide bar and chain are clear of you and all other obstructions and objects in cluding the ground Bystanders mu
35. e the file at regular intervals while filing this avoids one sided wear Use a piece of hardwood to remove burrs from cutting edge Check angles with the filing gauge 47 All cutters must be the same length If the cutters are not the same length they will have different heights This makes the chain run roughly and can cause it to break Find the shortest cutter and then file all other cutters back to the same length This can be very time consuming it is best to have it done in the workshop on an electric grinder 48 Z 3 2 fea 8 Depth gauge setting The depth gauge determines the height at which the cutter enters the wood and thus the thickness of the chip removed Distance between depth gauge and cut ting edge a a 0 65 mm 0 025 on 0 325 and 3 8 This setting may be increased by 0 2 mm 0 008 for cutting softwood in mild wea ther season no frost 689BA014 KN Lowering depth gauges The depth gauge setting is reduced when the chain is sharpened Use filing gauge to check the setting every time you sharpen the chain and if necessary lower the depth gauge with a flat or trian gular file so that it is level with the filing gauge Filing gauge for depth gauge setting of 0 65 mm Part No 1110 893 4000 Round off depth gauges parallel to the stamped marking After sharpening Clean the chain thoroughly remove filings or grinding dust lubricate the chain by immersi
36. guide bar Be especially careful when cutting small tough limbs small size brush and saplings which may easily catch the chain Don t overreach Don t cut above shoulder height Begin cutting and continue at full throttle 7 Cut only one tog at a time oor Use extreme caution when re entering a previous cut Do not attempt to plunge cut if you are not experienced with these cutting techniques Be alert for shifting of the log or other forces that may cause the cut to close and pinch the chain Maintain saw chain properly Cut with a correctly sharpened properly tensioned chain at all times Stand to the side of the cutting path of the chainsaw 13 ay 001BA053 LA Pushback Pushback occurs when the chain on the top of the bar is suddenly stopped when itis pinched caught or encounters a foreign object in the wood The reaction of the chain drives the saw straight back toward the operator and may cause loss of saw control Pushback frequently occurs when the top of the bar is used for cutting To avoid pushback 1 Be alert to forces or situations that may cause material to pinch the top of the chain 14 Pullin frequently occurs when the bumper spike of the saw is not held securely against the tree or limb and when the chain is not rotating at full speed before it contacts the wood Warning Use extreme caution when cutting small size brush and saplings which may easily catch the
37. h can result in the bar and chain skating or bouncing along the limb or log Even for those compact saws designed for use in confined spaces one handed operation is dangerous because the operator may lose control Cutting Instructions Grip Always hold the saw firmly with both hands when the engine is running Place your left hand on front handle bar and your right hand on rear handle and throttle trigger Left handers should follow these instructions too Wrap your fingers tightly around the handles keeping the handles cradled between your thumb and forefinger With your hands in this position you can best oppose and absorb the push pull and kickback forces of your saw without losing control see section on reactive forces Make sure your chainsaw handles and grip are in good condition and free of moisture pitch oil or grease Warning Do not operate your chainsaw with the starting throttle lock engaged Cutting with the starting throttle lock engaged does not permit the operator proper control of the saw or chain speed Warning Never touch a chain with your hand or any part of your body when the engine is running even when the chain is not rotating The chain continues to rotate for a short period after the throttle trigger is released Warning Do not cut any material other than wood or wooden objects Use your chainsaw for cutting only It is not designed for prying or shoveling away limbs roo
38. hnique A felling notch determines the direction of the fall For an open face cut Properly place felling notch perpendicular to the line of fall close to the ground Cut down at app 50 degree angle to a depth of app 1 5 to 1 4 of the trunk diameter Make second cut from below at app 40 degree angle Remove resulting 90 degree piece 3 3 2 z 001BA043 LA Making sapwood cuts For medium sized or larger trees make cuts at both sides of the trunk at same height as subsequent felling cut Cut to no more than width of guide bar This is especially important in soft wood in summer it helps prevent sapwood splintering when the tree falls 4 3 a 3 B Felling cut Conventional and open face technique Begin 1 to 2 inches higher than center of felling notch Cut horizontally towards the felling notch Leave approx 10 of diameter uncut This is the hinge Do not cut through the hinge you could lose control of the direction of the fall Drive wedges into the felling cut where necessary to control the fall Warning If the tip of the bar contacts a wedge it may cause kickback Wedges should be of wood or plastic never steel which can damage the chain 17 C Hinge Helps control the falling tree Donot cut through the hinge you could lose control of the direction of the fall Warning In order to reduce the risk of personal injury never
39. il before installing it Drop the rewind spring housing assembly with the bot tom plate area up into the fan shroud recess If the spring should pop out of its housing during installation re insert it in its housing starting from outside to inside in counter clockwise direction Reassemble the rope rotor as above Tensioning the rewind spring Tensioning the rewind spring With the starter rope fully extended make a loop in the rope between the rotor and fan housing and use it to turn the rope rotor six full revolutions clockwise Hold the rope rotor steady in this position Pull out and straighten the twisted rope Now release the rope rotor gradually and allow spring force to wind the starter rope fully onto the rope rotor The rewind spring is tensioned correctly if the starter grip is held firmly in place against the starter housing by spring tension and does not droop If more tension is required add one more turn on the rope rotor The rope rotor should be able to be rotated by at least one half an extra turn with the rope pulled all the way out If spring tension is too great pull out the starter rope hold the rotor firmly by hand and remove one turn of the rope A starter spring that is tensioned too heavily will prob ably break Re install the fan shroud with the retaining screws secu rely tightened Maintaining and Sharpening Saw Chain 2 4 Fo OS A EDEDED 9 g Correctly sharpened chain The illust
40. is essential during this period After breaking in stop the engine check chain tension and adjust if necessary Chain lubrication Never operate the chain saw without proper chain lubrica tion If the chain is allowed to run dry the whole cutting attachment will be irretrievably damaged within a very short time For this reason you should always check operation of the chain lubricating system and the level in the oil tank before starting work Start the saw and hold the cutting attachment over a light patch of ground Take care the Oijlomatic chain must not touch the ground hold it at least 20 cm 8 in clear of the ground Run the engine at about half throttle If an increas ing film of oil can be seen on the ground chain lubrication is operating correctly Chain tension Apart from chain lubrication chain tension is the factor that has the greatest influence of the cutting attachment s use ful life It is therefore necessary to check chain tension before starting work and at regular short intervals during cutting work Chain tension is correct in the cold condition when the chain fits snugly against the underside of the bar and can still be pulled along the bar by hand wear gloves As it warms up to normal operating temperature the chain expands and sags noticeably The saw chain must be retensioned when the drive links begin to come out of the groove on the underside of the bar If this is not done there is a ri
41. kg 14 6 Ib 038 AVSEQ 6 6 kg 14 6 lb 038 AVMEQ 6 6 kg 14 6 lb 51 52 For Canada only STIHL cutting attachments complying with CSA Standard CAN 3 Z 62 3 Guide bar STIHL Rollomatic with sprocket nose 11 tooth 40 45 50 cm 16 18 20 in Saw chain STIHL chain 33 RS 33 RM 33 RM2 9 32 3 8 Other cutting attachments complying with CSA Standard CAN 3 Z 62 3 are available see Chain Leaflet inside chain box or contact your local STIHL dealer Please ask your STIHL dealer to properly match your powerhead with the appropriate bar chain combinations to reduce the risk of kickback injury Ordering Spare Parts Please enter your saw model machine number as well as the part numbers of the guide bar saw chain and chain sprocket in the spaces provided on the right This will make re ordering simpler The guide bar saw chain and chain sprocket are subject to normal wear and tear The part numbers of the standard bar chain and sprocket are printed on the right for your convenience When purchasing these parts always quote the saw model the part numbers and names of the parts Mode ELETT Machine number l LI ell Guide bar part number Chain part number Sprocket part number Standard equipment Rollomatic bar 40 cm 16 in 3003 000 6113 not for Canada 3 8 Rapid Micro 3859 000 0060 Spur
42. lever on CHOKE the combu stion chamber will flood and stall the engine If you have moved the Master Control lever to START and the engine still does not run after several attempts it is already flooded In such a case remove and dry off the spark plug With the spark plug still removed set the Master Control lever to STOP and crank the engine over several times with the starter to clear the combustion chamber When you now try to start move the Master Control lever to START even if the engine is cold At very low outside temperatures you should still move the Master Control lever to START and disengage the throttle trigger from the starting throttle position by briefly accelerating the engine but then warm up the engine at part throttle for a short period A new engine or one which has been run until the fuel tank is dry will not start first time after fueling because fuel will only begin to reach the carburetor after the engine has been cranked over several times Electrically Heated Handles Option Heating switched on The handle heating system enables you to keep a warm comfortable grip on the front and rear handles at extre mely low outside temperatures The heating system is controlled by means of a switch on the hnadlebar The symbols above and below the switch indicate the two switch positions O for heating off I for heating on i e the switch must be moved to
43. n of the chain if activated in a kickback situtation by the operator s hand or by inertia Front Hand Guard Provides protection against pro jecting branches and helps prevent the left hand from touching the chain if it slips off the handle bar Front Handle Handle bar for the left hand at front of saw Spark Plug Terminal Connects the spark plug with the ignition wire Handle Heating Switch For switching the electric handle heating on and off Rear Handle The support handle for the right hand located at or toward the rear of the saw Rear Hand Guard Gives added protection to operator s right hand Chain Sprocket The toothed wheel that drives the saw chain 15 16 17 18 19 20 21 22 23 Chain Catcher Helps to reduce the risk of operator contact by a chain when it breaks or comes off the bar Chain Sprocket Cover Covers the clutch and the sprocket Twist Lock Lock for carburetor box cover Master Control Lever Lever for choke control starting throttle run and stop switch position Throttle Trigger Interlock Must be depressed before the throttle trigger can be activated Throttle Trigger Controls the speed of the engine Chain Guard Scabbard Covers the bar and the chain when the saw is not in use Muffler Reduces engine exhaust noise and directs the exhaust gases Starter Grip The grip of the starter for starting the engine
44. n open area Maintain good balance and secure footing Grip the front handlebar of the saw firmly with your left hand and press down For saws with a rear handle level with the ground put the toe of your right foot into the rear handle and press down With your right hand pull out the starter grip slowly until you feel a definite resistance and then give it a brisk strong pull err D 5 a ao 3 The second recommended method for starting your chainsaw allows you to start the saw without placing it on the ground Engage the chain brake grip the front handle of the chainsaw firmly with your left hand Keep the arm on the front handle in a locked straight position Hold the rear handle of the saw tightly between your legs just above the knees Maintain good balance and secure footing Pull the starting grip slowly with your right hand until you feel a definite resistance and then give it a brisk strong pull Warning Be sure that the guide bar and chain are clear of you and all other obstructions and objects including the ground When the engine is started the engine speed 8 with the starting throttle lock engaged will be fast enough for the clutch to engage the sprocket and turn the chain If the upper quadrant of the bar nose touches any object it may cause kick back to occur see section on reactive forces To reduce this risk always engage the chain brake before starting Never attempt to start the
45. ndition of the chain and other factors The type of bar and saw chain you use is an important factor in the occurrence and force of the kickback reaction Some STIHL bar and chain types are designed to reduce kickback forces STIHL recommends the use of reduced kickback bars and low kickback chains 11 jal 8 8 z f 3 S Devices for reducing the risk of kickback injury STIHL recommends the use of the STIHL Quickstop chain brake on your power head with green labeled reduced kick back bars and low kickback chains Caution If the chain brake does not function correctly stop using the saw immediately Risk of injury Take the saw to your local STIHL Service Centre Do not use the saw until the fault has been rectified see ihe section Chain Brake 12 Quickstop chain brake STIHL has developed a chain stopping system designed to reduce the risk of injury in certain kickback situations It is called a Quickstop chain brake The Quickstop is available as standard equipment on your STIHL chainsaw and is available for installation on most older STIHL saws Ask your dealer to retrofit your older mode saw with a chain brake When a kickback occurs the guide bar may rotate around the front handle If the cutting position is such that the operator s left hand is gripping the front handle behind the hand guard and if the left hand rotates around the front handle and contacts the front hand guard which is
46. ng conditions you should leave the adjusting screw in the E position This is the oil pump s most economic setting If you fit a shorter guide bar for felling small trees or limb ing you can reduce the oil feed rate to a little less than the E position In case of longer guide bars large stem dia meters and very dry wood it may be necessary to increase the oil feed rate by turning the adjusting screw slightly beyond the E position Insufficient lubrication can cause an abnormally high rate of wear For this reason you should make sure the chain is always wetted with a film of lubricant Chain Brake Pr Xo Locking chain with chain brake in an emergency when starting at idling speed The chain is stopped and locked when the hand guard is pushed toward the bar nose by the left hand or when brake is activated by inertia in certain kickback situations Releasing the chain brake Pull the hand guard back toward the front handle The chain brake is activated by the inertia of the front hand guard if the kickback force of the saw is high enough The hand guard is accelerated toward the bar nose even if your left hand is not be hind the hand guard e g during felling cut The chain brake will operate only if the hand guard has not been modified in any way Check operation of chain brake Before starting work Run engine at idle speed engage the chain brake push hand guard toward
47. ng it in an oil bath Before long out of service period Clean the chain with a brush and immerse it in an oil bath Please quote the following details when ordering a new chain Chain type e g Rapid Super Chain pitch e g 3 8 Number of drive links e g 72 Bar length e g 50 cm 20 Storing the machine For periods of about 3 months or longer Drain and clean the fuel tank Run engine until carburetor is dry this helps prevent the carburetor diaphragms sticking together Remove the saw chain and guide bar clean them and protect with corrosion inhibiting oil Thoroughly clean the machine pay special attention to the cylinder fins and air filter If you use Bioplus fill the chain oil tank Store the machine in a dry high or locked location out of the reach of children and other unauthorized persons 49 Maintenance Chart Please note that the following maintenance intervals apply for normal operating con ditions only If your daily working time is longer than normal or cutting conditions are difficult very dusty work area tropical wood etc shorten the specified intervals ac cordingly refueling stop after finishing work or daily after each weekly monthly if faulty if damaged as required Complete machine Visual inspection condition leaks Clean Throttle trigger throttle trigger interlock
48. nscrew the hexagon nuts 1 and take off the sprocket cover 2 The chain brake has to be released before this can be done by pulling the hand guard back toward the handlebar Now back off the chain tensioning nut 3 by turning the tensioning screw 4 to the left counterclockwise to the end of its thread Hold the guide bar vertically with the nose upwards and fit the Oilomatic chain on it starting at the bar nose The cutting edges of the chain are very sharp You should always wear gloves to protect your hands from injury when fitting the saw chain mounting the guide bar tensioning the saw chain and whenever you check chain tension With the chain in position locate the slot of the guide bar over the studs 5 and place the Oilomatic chain over the sprocket 6 at the same time Be sure that the cutting edges on the top of the bar face the bar nose The peg of Top Peg in locating hole cutting edges point toward bar nose Center Drive link tang Fitting the chain on the sprocket Bottom Tensioning the saw chain the tensioning nut 3 must engage in the lower guide bar locating hole Now tension the chain by turning the tensioning screw 4 clockwise until there is only very little chain sag on the underside of the bar Make sure that the drive link tangs 7 are properly located in the guide bar groove Refit the sprocket cover 2 on the studs 5 and screw on the hexa gon nuts 1 finger tight Hold the bar nos
49. of the ISO 9001 standard for quality management systems in terms of product development materials purchasing production assembly documentation and customer service For Canada only Important Safety Precautions 1 Fatigue causes carelessness Be more cautious before rest periods and before the end of your shift 2 Safety clothing required by your safety organizations government regulations or your employer should be used otherwise snug fitting clothing safety foot wear and hand and hear protection should be worn 3 Before fuelling servicing or trans porting your chain saw switch off the engine To help prevent fire restart your chain saw at least 3 m 10 ft from the fuelling area 4 When using a chain saw a fire extinguisher should be available 5 When felling keep at least 2 1 2 tree lengths between yourself and your fellow workers 6 Plan your work assure yourself of an obstacle free work area and in the case of felling of an escape path from the falling tree 7 Follow instructions in your operator s manual for starting the chain saw and control the chain saw with a firm grip on both handles when it is in operation Keep handles dry clean and free of oil Achain saw should never be carried with the engine running 10 11 12 13 14 When transporting your chain saw use the appropriate transportation covers that should be available for the guide bar and saw chain
50. one Keep within calling distance of others in case help is needed Your chainsaw is equipped with a chain catcher It is designed to reduce the risk of personal injury in the event of a thrown or broken chain From time to time the catcher may be damaged or removed To reduce the risk of personal injury do not operate a chainsaw with a damaged or missing catcher Inspect buffers periodically Replace damaged broken or excessively worn buffers immediately since they may result in loss of control of the saw A sponginess in the feel of the saw increased vibration or increased bottoming during normal operation may indicate damage breakage or excessive wear Buffers should always be replaced in sets If you have any questions as to whether the buffers should be replaced consult your STIHL servicing dealer Warning Take extreme care in wet and freezing weather rain snow ice Put off the work when the weather is windy stormy or rainfall is heavy Clear the area where you are working Warning Avoid stumbling on obstacles such as stumps roots or rocks and watch out for holes or ditches Be extremely cautious when working on slopes or uneven ground There is increased danger of slipping on freshly debarked logs Warning To reduce the risk of serious or fatal injury to the opera tor or bystanders never use the saw with one hand You cannot control reactive forces and you may lose control of the saw whic
51. or for your area if you do not understand any of the instructions in this Manual Warning Because a chain saw is a high speed wood cutting tool some special safety precautions must be observed as with any other power saw to reduce the risk of personal injury Careless or improper use may cause serious or even fatal injury STIHL s philosophy is to continually improve all of its products As a result engineering changes and improvements are made from time to time If the operating characteristics or the appearance of your saw differs from those described in this Manual please contact your STIHL dealer for informations and assistance STIHL Parts of the Chain Saw 7_ Front handle plug terminal 9 Handle heating switch 10 Rear handle 19 Chain guard 20 Muffler 21 Starter gri 22 Oil filler cap 23 Fuel filler cap Front hand guard Chain brake Guide bar 6 5 Bumper spike 4 nose 3 2 Guide bar Oilomatic saw chain 1 Chain sprocket 12 Chain catcher _13 Chain sprocket cover 14 Twist lock 15 Master Control lever 16 Throttle trigger_18 Definitions 12 Oilomatic Saw Chain A loop of chain having cutters tie straps and drive links Guide Bar Supports and guides the saw chain Guide Bar Nose The exposed end of the guide bar Bumper Spike Toothed stop for holding saw steady against wood Chain Brake A device to stop the rotatio
52. ound pressure level Lpe according to ISO 7182 102 dB A Sound power level Lweg according to ISO 92071 113 dB A Vibration measurement agg according to ISO 7505 left handle 4 0 mis right handle 5 6 m s 1 Weighted equivalent level includes idling full load and racing with the same duration of exposure Ignition System Type Electronic magneto ignition breakerless Spark plug suppressed Bosch WSR 6 F or NGK BPMR 7 A Heat range 200 Electrode gap 0 5 mm 0 02 in Spark plug thread M 14x1 25 9 5 mm 0 37 in long For Canada only This spark ignition system meets all re quirements of the Canadian Interference Causing Equipment Regulations Fuel System Carburetor All position diaphragm carburetor with integral fuel pump Air filter Flat two part wire mesh filter Fuel tank capacitiy 0 68 1 43 US pt Fuel mixture see chapter Fuel Cutting Attachment Guide bars Rollomatic with sprocket nose Duromatic with stellite tipped nose Bar lengths Rollomatic 37 40 45 and 50 cm 14 5 16 18 and 20 in Duromatic 40 45 and 50 cm 16 18 and 20 in Oilomatic chains Standard 3 8 9 32 mm Rapid Micro Rapid Su per Topic Micro Topic Super Drive link gauge 1 6 mm 0 063 in Chain sprockets Standard 7 tooih for 3 8 pitch Chain lubrication Fully automatic oil pump Oil tank capacity 0 36 0 76 US pt Weight without bar and chain 038 AVESQFB 6 6
53. ration shows 1 drive links A properly sharpened chain slices 2 left hand cutter through wood effortlessly and requires 3 right hand cutter very little feed pressure 4 tie straps Do not work with a dull or damaged chain as it will increase the physical effort required produce unsatisfactory results and a higher rate of wear Clean and check your chain for cracks in the links and damaged rivets replace any damaged or worn parts of the chain and match the new parts to the shape and size of the original parts Replacing individual parts of chain Use the following tools STIHL NG 4 chain breaker STIHL NG 5 rivet spinner STIHL NG 6 chain breaker and rivet spinner Instructions for use are supplied with the tools Special accessory 43 rA x o g ft 3 oo Select sharpening tools to suit chain pitch You can use chains with the following pitches t on your saw 0 325 8 25 mm t 39 9 32mm Chain pitch must match chain sprocket and drive link gauge must match guide bar Check as follows Chain pitch t distance from one rivet to the next rivet but one divided by two 44 Use only special saw chain files Other files have the wrong shape and cut Select file diameter according to chain pitch Chain pitch Inch mm File dia mm Inch Part No 0 325 8 25 3 8 9 32 4 8 3 16 0811 412 8088 5 2 13 64 0814 243 3384 2 lt 3 oO D
54. rced cut retardant insert Protect your hands with gloves when handling saw and saw chain Heavyduty nonslip gloves improve your grip and protect your hands Good footing is most important in chain saw work Wear sturdy boots with nonslip soles Steel toed safety boots are recommended To reduce the risk of injury to your eyes never operate a chainsaw unless wearing goggles or properly fitted safety glasses with adequate top and side protection complying with your national standard Wear an approved safety hard hat to protect your head chainsaw noise may damage your hearing Always wear sound barriers ear plugs or ear mufflers to protect your hearing Continual and regular users should have their hearing checked regularly aces Z THE SAW Parts of the chainsaw for illustrations and definitions of the parts see the chapter on Main Parts of Saw Warning Never modify a chainsaw in any way Only attachments and parts supplied by STIHL or expressly approved by STIHL for use with the specific STIHL saw models are authorized Although certain unauthorized attachments are useable with the STIHL powerhead their use may in fact be extremely dangerous THE USE OF THE SAW Transporting the chainsaw Warning Always stop the engine before putting a chainsaw down or carrying it Carrying a chainsaw with the engine running is extremely dangerous Accidental accel eration of the engine can cause the chain to ro
55. sk of the chain jumping off the bar If the chain is retensioned during cutting work it must always be slackened off again after finishing work This is necessary because high contraction stresses would other wise occur as the chain cools down to ambient tempera ture especially at extremely low outside temperatures and cause damage to the crankshaft and bearings A new chain must be retensioned more frequently than a used one because it stretches during the initial break in period Chain sprocket The stress and strain on the chain sprocket are particularly high If the wear marks on the teeth are very pronounced about 0 5 mm 0 02 in deep the sprocket should be replaced A worn sprocket reduces the service life of the Worn chain sprocket saw chain The chain sprocket should be replaced as a matter of routine with every second Oilomatic chain It is best to use saw chains alternately with one sprocket 35 36 Air Filter The air filter s function is to intercept dust and dirt in the in take air and thus reduce wear on engine components A clogged air filters has a detrimental effect on engine per formance it increase fuel consumption and makes start ing more difficult The air filter must be cleaned when there is a noticeable loss of engine power The carburetor box cover is removed by turning the twist lock to the left counterclockwise Clean exterior of air fil ter and area around it and then use a s
56. st be kept well clear of the general work area of the saw Starting procedure Engage the chain brake by pushing the hand guard 1 towards the bar nose 2 If the engine is cold set Master Control lever 2 to CHOKE If the engine has been warmed up set Master Control lever 2 to START This also applies if the engine has been running but is still cold The throttle trigger interlock 4 must always be engaged before moving the Master Control lever 2 to the START or CHOKE position This automatically sets the throttle trigger 3 in the starting throttle position 3 Starting the saw 3 1 Starting above the ground Grip the front handle 5 of the saw with your left hand Hold the rear handle of the saw tightly bet ween your legs just above the knees Keep the arm on the front handle in a locked straight position 3 2 Starting on ground level Hold the saw firmly on the ground with your left hand on the front handle 5 and put your right foot into the rear handle 6 and press down A Pull the starter grip 7 slowly with your right hand until you feel the starter engage then give the grip a brisk strong pull The starter rope must not be pulled out more than 70 cm about 28 in as it might otherwise break Dot not let the starter grip 7 snap back Guide it slowly into the housing so that the starter rope can rewind pro perly 5 Crank the engine until it begins to fire If st
57. stand directly behind the tree when it is about to fall since part of the trunk may split and come back towards the operator barber chairing or the tree may jump backwards off the stump Always keep to the side of the falling tree When the tree starts to fall withdraw the bar shut off the engine and walk away on the preplanned escape path Watch out for falling limbs 18 Warning Be extremely careful with partially fallen trees which are poorly supported When the tree hangs or for some other reason does not fall completely set the saw aside and pull the tree down with a cable winch block and tackle or tractor If you try to cut it down with your saw you may be injured Felling cut for small diameter trees simple fan cut Engage the bumper spikes of the chain saw directly behind the hinge and pivot the saw around this point only as far as the hinge The spiked bumper rolls against the trunk lt A K t Q lt a S O Felling cut for large diameter trees sectioning method Warning Felling a tree that has a diameter greater than the length of the guide bar requires use of either the sectioning felling cut or plunge cut method These methods are extremely dangerous because they involve the use of the nose of the guide bar and can result in kickback Only properly trained professionals should attempt these techniques For the sectioning method make the first part of the felling cut with the guide bar
58. starting your saw and check for leakage Check for fuel leakage while refueling and during operation If fuel or oil leakage is found do not start or run the engine until leak is fixed and spilled fuel has been wiped away Take care not to get fuel on your clothing If this happens change your clothing immediately Warning Unit vibrations can cause an improperly tightened fuel cap to loosen or come off and spill quantities of fuel In order to re duce risk of fuel spillage and fire tighten fuel cap by hand with as much force as possible The screw driver end of OWL the STIHL combination wrench or other similar A tool can be used as an aid in tightening slotted fuel caps Starting The chain brake must be blocked when starting the saw Warning Your chainsaw is a one person saw Do not allow other persons to be near the running chainsaw Start and operate your saw without assistance For specific starting instructions see the appropriate section of the Owner s Manual Proper starting methods reduce the risk of injury Do not drop start This method is very dangerous because you may lose control of the saw There are two recommended methods for starting your chainsaw S 2 Q Oo lt a S oS With the first method the chainsaw is started on the ground Engage the chain brake see Chain Brake chapter in your Owner s Manual and place the chainsaw on firm ground or other solid surface in a
59. t the saw with the sprocket cover loose Check chain tension once more after having tightened the nut s and thereafter at regular intervals when ever the saw is shut off If the chain becomes loose while cutting shut off the engine and then tighten Never try to tighten the chain while the engine is running Fueling Your STIHL chainsaw uses an oil gaso line mixture for fuel see chapter Fuel of your Owner s Manual Warning Gasoline is an extremely flammable fuel If spilled or ignited by a spark or other ignition source it can cause fire and serious burn injury or property damage Use extreme caution when handling gasoline or fuel mix Do not smoke or bring any fire or flame near the fuel Fueling Instructions Fuel your chainsaw in well ventilated areas outdoors only Always shut off the engine and allow it to cool before refueling Gasoline vapor pressure may build up inside the gas tank of a two cycle engine depending on the fuel used the weather conditions and the venting system of the tank In order to reduce the risk of burns or other personal injury from escaping gas vapor and fumes remove the gas cap on the STIHL product carefully so as to allow any pressure build up in the tank to release slowly Never remove fuel filler cap while engine is running Select bare ground for fueling and move at least 10 feet 3 m from fueling spot before starting the engine Wipe off any spilled fuel before
60. tate During operation the power head muffler and the material around it reach extremely high temperatures Avoid touching the hot muffler you could receive serious burns By hand When carrying your saw by hand the engine must be stopped and the saw must be in the proper position 6 Grip the front handle and place the muffler away from the body The chain guard scabbard should be over the chain and the guide bar which should point backwards When carrying your saw the bar should be behind you By vehicle When transporting in a vehicle keep chain and bar covered with the chain guard Properly secure your saw to prevent turnover fuel spillage and damage to the saw Preparation for the use of the saw Take off the chain guard and inspect for safety in operation For assembly follow the procedure described in the chapter Mounting the Bar and Chain of your Owner s Manual STIHL Oilomatic chain guide bar and sprocket must match each other in gauge and pitch Before replacing any bar and chain see the sections on Specifications kick back and the ANSI B 175 1 1991 chain saw kickback standard in this manual Warning Proper tension of the chain is extremely important In order to avoid improper setting the tensioning procedure must be followed as described in your manual Always make sure the hexagonal nut s for the sprocket cover is are tightened securely after tensioning the chain Never star
61. the Quickstop activating lever this contact will activate the Quickstop The chain brake on most new mode STIHL chainsaws can also be activated by inertia See the chapter entitled Chain Brake of your Owner s Manual Warning Never operate your chainsaw without a front hand guard In a kickback situation this guard helps protect your left hand or other parts of your body In addition removal of the hand guard on a saw equipped with a chain brake will deactivate the chain brake Warning No Quickstop or other chain brake device prevents kickback These devices are designed to reduce the risk of kickback injury if activated in certain kickback situations In order for the Quickstop to reduce the risk of kickback injury it must be properly maintained and in good working order See the chapter entitled Chain Brake and Maintenance Repair and Storing of your Owner s Manual In addition there must be enough distance between the bar and the operator to ensure that the Quickstop has sufficient time to activate and stop the chain before potential contact with the operator Warning An improperly maintained chain brake may increase the time needed to stop the chain after activation or may not activate at all Reduced kickback bar STIHL green labeled reduced kickback bars are designed to reduce the risk of kickback injury when used with STIHL green labeled low kickback chains Warning When used with other
62. tructions for the conversion to intake air pre heating are supplied with each kit 34 Guide Bar Chain and Sprocket Guide bar The nose and underside of the guide bar are subject toa particularly high rate of wear To avoid one sided wear turn the bar over every time you resharpen or replace the chain Regular cleaning of the oil inlet holes and guide bar groove is also important The bar can be examined for signs of wear at the same time A minimum bar groove depth must be maintained in order to prevent the drive links contacting the bottom of the groove the heels of the cutter and tie strap would no longer ride on the guide bar rails The groove depth varies according to chain type and pitch Chain type Chain pitch Minimum depth Rapid 3 8 6 0 mm 0 24 Topic 3 8 6 5 mm 0 26 The groove depth should be measured at the point where the bar is stressed most That is the bar nose on Duromatic bars and the area where most of the cutting is done on Rollomatic bars The guide bar must be replaced when groove depth is less than the specified minimum On Rollomatic guide bars it is not necessary to separately lubricate the sprocket nose bearing because the chain oil which flows to the bearing by way of the bar groove during normal operation is adequate for lubrication Checking chain lubrication Breaking in Oilomatic chain Every new chain has to be broken in for about 2 to 3 minu tes Ample chain lubrication
63. ts or other objects When sawing make sure that the saw chain does not touch any foreign materials such as rocks fences nails and the like Such objects may be flung off damage the 9 saw chain or cause the saw to kickback In order to keep control of your saw always maintain a firm foothold Never work on a ladder or on any other insecure support Never use the saw above shoulder height Never work in a tree unless you have received specific professional training for such work are properly secured such as tackle and harness system or a lift bucket have both hands free for operating the chainsaw in a cramped environment and have taken proper precautions to avoid injury from falling limbs or branches Position the chainsaw in such a way that your body is clear of the cutting attachment whenever the engine is running Stand to the left of the plane of the cutting attachment 10 z 8 amp 8 Don t put pressure on the saw when reaching the end of a cut The pressure may cause the bar and rotating chain to pop out of the cut or kerf go out of control and strike the operator or some other object If the rotating chain strikes some other object a reactive force may cause the moving chain to strike the operator Reactive forces including kickback Warning Reactives forces may occur any time the chain is rotating Reactives forces can be dangerous In any chainsaw the powerful force used to cut wood
64. ut 1 at compression side A Then make bucking cut 2 at tension side B If the saw pinches stop the engine and remove it from the log Only properly trained professionals should work in an area where the logs limbs and roots are tangled Working in blowdown areas is extremely hazardous Drag the logs into a clear area before cutting Pull out exposed and cleared logs first MAINTENANCE REPAIR AND STORING Use only STIHL replacement parts for maintenance and repair Use of parts manufactured by others may cause serious or fatal injury Never operate a chainsaw that is dam aged improperly adjusted or not com pletely or securely assembled Follow the maintenance and repair instructions in the appropriate section of your Owner s Manual especially those in the chapters Mounting the bar and chain Maintaining and Sharpening and Chain Brake Warning Always stop the engine and ensure that the chain is stopped before making any adjustments maintenance or repair work changing the saw chain or cleaning the saw Do not attempt any maintenance or repair work not described in your Owner s Manual Have such work performed at your STIHL service shop only Never test the ignition system with ignition wire terminal removed from spark plug or with unseated spark plug since uncontained sparking may cause a fire Warning To reduce the risk of fire and burn injury use only spark plugs authori zed by STIHL

STIHL Stihl Chainsaw 38 User's Manual

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