instruction manual chain saw cs-370
Contents
1. a MECHO ECHO INCORPORATED EMISSIONS AND WARRANTY STATEMENTS FOR EPA PHASE 2 CALIFORNIA TIER Iil EMISSION MODELS 5 CS 370 NOMENCLATURE OF PARTS MECHO INSTRUCTION MANUAL CHAIN SAW cs 370 A WARNING tions carefully and follow the rules for safe MECHO CHAIN SAW SAFETY MANUAL WARNING 4h DANGER o R X524 001640 890191 30131 Part Number X524 001640 REPLACEMENT BAR AND CHAIN GUIDE BAR CHAIN PART NO TYPE LINKS 14 14A0CD3752 OREGON 91P 91VG 52 16 16A0CD3757 OREGON 91P 91VG 57 18 18A0CD3762 OREGON 91P 91VG 62 Or equivalent X503 007040 Note There may be other replacement components for achieving kickback protection For details please refer to the chain and bar combination sheet shown in the instruction manual Part Number X503 007040 Cs 370 WARNING Read and follow all safety aie precaution in the instruction manual er Failure to follow instructions could 21 result in serious personal injury Part Number 890191 30131 TO AVOID KICKBACK Hold the chain saw firmly with both hands Don t let the nose of the guide bar contact any obstruction Tip contact may suddenly move the guide bar upward and backward which may cause serious injury If a decal cannot be read a new one can be ordered from your ECHO dealer CS 370 6 NOMENCLATURE OF PARTS Instruction manual Included with unit Read before operatio2. InspecvAdjust 1 af f l T OilFiter InspecvReplace 1 w o o ooo Fuel Fiter InspecvReplaoe 1 Ji Je Guide Bar and Oil Holes InspecvCiean 1 we J l Sprocket InspecvReplaoe 2 wet SparkPlug InspectiClean Replace 2 wje Cooling System Inspecvciean 2 w J J Muttler Spark Arrestor_ Inspect Clean Replace 2 wef StaterRope InspecvReplaoe 1 w Jo lo Sooo Screws Nuts Bolts Inspect Tighten Replace a e ee Meintenance Procedure Letter Codes IMPORTANT INSPECT C CLEAN Time intervals shown are maximum R REPLACE Actual use and your experience will determine the frequency of required maintenance All recommendations to replace are based on the finding of damage or wear during inspection CS 370 22 CARBURETOR ADJUSTMENT Every unit is run at the factory and the carburetor is set in compliance with Emission Regulations In addition the carburetor is equipped with H High Speed and L Low Speed needle adjustment limiters that prevent settings outside acceptable limits hk Before adjusting carburetor clean or replace air filter and muffler Spark Arrestor Screen 2 Make sure the bar and chain are properly adjusted Low speed needle L High speed needle H 3 Start engine and run several minutes to bring to operating temperature Flash choke twice during warm up to clear any air from the fuel system 4 Stop engine Turn H spee
3. clogged with wood chips function of the brake may deteriorate Always keep the device clean e Do not increase engine revolution while the chain brake is locked e Use the chain brake only in starting or in emergencies e When using throttle latch at starting keep the chain brake locked And after starting the engine unlock the brake immediately Chain brake unlock When the lever is fully pulled toward the operator brake is unlocked IMPORTANT Do not allow the saw to tip forward in order to avoid damage to the chain 19 CS 370 END OF THE GUIDE BAR may be placedat AUTOMATIC CHAIN BRAKE the height of about 35 cm Kickback produced from the tip of the guide bar will trip the automatic chain brake To make sure that the automatic chain brake operates properly follow these steps 1 Stop the engine 2 Hold the saw with the guide bar approximately 35 cm above a wooden surface Right hand should hold the rear handle and left hand should hold the front handle 3 Release the front handle and drop the end of the guide bar against the wooden surface 4 The impact should lock the chain brake IMPORTANT When checking the operation of the automatic chain brake use a soft surface substance like wood to provide the impact so the chain is not damaged Rear handle should be gripped lightly with the right hand Air cleaner cover WINTER OPERATION Use the winter plug to prevent carburetor t
4. dry clean and free of oil or fuel mixture 15 Operate the chain saw only in well ventilated areas 16 Do not operate a chain saw in a tree unless you have been specifically trained to do so 17 All chain saw service other than items listed in the Instruction manual maintenance instructions should be performed by competent service personnel For example if improper tools are used to remove the flywheel or if an improper tool is used to hold the flywheel in order to remove the clutch structural damage to the flywheel could occur and could subsequently cause the flywheel to burst 18 When transporting your chain saw use the appropriate guide bar scabbard 19 Spark arrestor mufflers approved to SAE Standard J 335 are standard on ECHO chain saws to reduce the possibility of forest fires Do not operate the chain saw with a loose or defective muffler Do not remove the spark arrestor screen CONTENTS RULES FOR SAFE OPERATION bee enna ee ee errr 1 SYMBOLS AND SIGNS sas peseanaansaasaeienedoataateiigars tone eateconaqonerasdenseiseeteusetierieieetessaanees 3 PACKING LIST se veeeretepaccrenes ecu se vnaeeanatoaanacice ts cesditsocceeteustsdetegapasmouanararacutssaratananeoteceverens 5 NOMENOCATORE OF FARTO searre cae a vente oh este roca eaneennanecenesaeeeerete 6 OPERATOR SAE Y oaea E E aces seneerers ante acvanae 8 CORRECT USE OF CHAIN BRAKE cccceeeeeeeeeeeee eee eeeeeeeeeeeeeaaeeeeeseaeeeeaaneeeeeaes 9 PREP
5. following Avoid using your wrist in a bent extended or twisted position Take periodic breaks to minimize repetition and rest your hands Reduce the speed and force in which you do the repetitive movement Do exercises to strengthen hand and arm muscles See a doctor if you feel tingling numbness or pain in your fingers hands wrists or arms The sooner RSI CTS is diagnosed the more likely permanent nerve and muscle damage can be prevented CS 370 EYE AND HEARING PROTECTION e Wear eye protection goggles that meet ANSI Z 87 1 requirements Goggles meeting the requirements have the mark Z 87 stamped on them e Wear hearing protection If this guideline is not followed hearing loss can occur ECHO recommends wearing hearing protection at all times WEAR PROPER CLOTHING e Snug fitting durable clothing should be worn Pants should have long legs DO NOT WEAR SHORTS Do not wear loose fitting clothing scarves neckties jewelry or any item that may become tangled in surrounding growth or the chain saw itself e Wear shoes with non skid soles DO NOT wear open toed shoes or operate unit barefooted e Wear no slip heavy duty work gloves to improve your grip on the chain saw handles The gloves also help reduce the transmission of machine vibration to your hands HOT HUMID WEATHER e Heavy protective clothing can increase operator fatigue which may lead to heat stroke Schedule heavy work for early mornin
6. gasoline can clean it CS 370 24 Groove Oil hole Pe eS Ses PES Cs a Cylinder fins com gt SA FQ a lt Pa 7 Va Muffler Spark arrestor screen Screen cover Decrease wor Increase i er O Adjusting screw s gt wes ee See 25 GUIDE BAR e Clean before using Clean the groove of the guide bar with a small screwdriver Clean oil holes with a wire e Check sprocket and the clutch and clean the bar mount area before installation of the bar Replace either or both if worn SPROCKET e A damaged sprocket will cause premature damage or wear of saw chain When the sprocket has worn out 0 5 mm 0 020 in or more replace it e Check sprocket when you install new chain Replace it if worn CYLINDER FINS e Check periodically e Clogged fins will result in poor engine cooling e Remove dirt and dust from between fins to let cooling air pass easily MUFFLER SPARK ARRESTOR Remove air cleaner cover and remove spark plug lead e Remove spark arrestor screen cover and screen from muffler body e Clean carbon deposits from muffler components e Replace screen if it is cracked or has holes burned through e Assemble components in reverse order NOTE Carbon deposits in muffler will cause drop in engine output Spark arrestor screen must be checked periodically AUTOMATIC OILER e The discharge volume of the automatic oiler is adjusted to 4 mL
7. you are fatigued 3 Use safety footwear snug fitting clothing and protective gloves Wear eye hearing and head protection devices 4 Use caution when handling fuel Move the chain saw at least 3 m 10 feet from the fueling point before starting the engine 5 Do not allow other persons to be near the chain saw when starting or cutting with the chain saw Keep bystanders and animals out of the work area 6 Do not start cutting until you have a clear work area secure footing and a planned retreat path from the falling tree 7 Keep all parts of your body away from the saw chain when the engine is running 8 Before you start the engine make sure that the saw chain is not contacting anything 9 Carry the chain saw with the engine stopped the guide bar and saw chain to the rear and the muffler away from your body 10 Do not operate a chain saw that is damaged improperly adjusted or not completely and securely assembled Be sure that the saw chain stops moving when the throttle control trigger is released CS 370 11 Shut off the engine before setting the chain saw down 12 Use extreme caution when cuiting small size brush and saplings because slender material may catch the saw chain and be whipped toward you or pull you off balance 13 When cutting a limb that is under tension be alert for spring back so that you will not be struck when the tension in the wood fibers is released 14 Keep the handles
8. ARATION FOR Ss cttcevacneecesesdacrqaapacdadseshenteiechcntadactbeteunecacucennsasabercecaenensteies 10 FUELAND BINT a ertareets carter E E 12 IP aN aaa ge ig he cee een sees pve eee cat esa eee eeeeereeteee tenes eee 13 GUT TIUINGHNG TRU GTO 2 sssacescasearnesssntossetdsacccusutensiscortssancenseaatorseareegcaeninerazervess 16 CHAIN AND GUIDE BAR COMBINATION ccccccceeeeeeeeeeeeeeeeeeeeeeseeeeeeeeeeeeeeaes 21 MAINTENANCE AND CARE secrrnresnen ipro snr N a 22 SETANG THE SAW CIN oeae E E rR 26 TROUBLE SHOOTIN C serene E E ee ee 28 STORAGE FAP VE arses catratenn anne nnnsdease cosa anasatanetes ceangadtnganacaansemancauadeteenaneniatenntee 29 TECRANICAE DATA sooren cee eee eee ee ner ee eee ee E ee 29 This chain saw is designed for cutting wood or wood products Do not cut solid metal sheet metal plastic or any non wood materials Specifications descriptions and illustrative material in this literature are as accurate as known at the time of publication but are subject to change without notice Illustrations may include optional equipment and accessories and may not include all standard equipment SYMBOLS AND SIGNS 44 DANGER S CIRCLE AND SLASH SYMBOL The safety alert symbol accompanied by the This symbol means the specific action word DANGER calls attention to an act or shown is prohibited Ignoring these condition which WILL lead to serious prohibitions can result in serious or personal injury or death if not avoided fa
9. HAIN TENSION e Chain tension should be checked frequently during work and corrected as necessary e Tension the chain as tight as possible but so it can still be pulled easily along the bar by hand CAUTION Do not operate with a loose chain CHAIN LUBRICATION TEST Hold the chain just above a dry surface and open the throttle to half soeed for 30 seconds A thin line of thrown oil should be seen on the dry surface 15 CS 370 CS 370 CUTTING INSTRUCTION GENERAL 44 CAUTION e Read the ECHO CHAIN SAW SAFETY MANUAL included with your chain saw for additional cutting and safety instructions e Wear suitable hearing protection such as earmuffs or earplugs to protect against objectionable or uncomfortable loud noises e Do not let the tip of the bar touch anything while the engine is running At cutting speed the chain is moving ata high rate of speed Should the tip contact a limb or log while the chain is moving the tip will be pushed upward with considerable force This is known as kickback Avoid it In all circumstances the operation of the chain saw is a one man job It is difficult at times to take care for your own safety so don t assume the responsibility for a helper as well After you have learned the basic techniques of using the saw your best aid will be your own good common sense The accepted way to hold the saw is to stand to the left of the saw with your left hand on
10. MECHO INSTRUCTION MANUAL CHAIN SAW Cs 3 70 WARNING Read the instructions carefully and follow the rules for safe operation Failure to do so could result in serious injury ECHO INCORPORATED 400 Oakwood Road Lake Zurich Illinois 60047 1564 X750 008 59 2 Phone 847 540 8400 X750 325 010 2 Printed in Japan O608LHp 0861 ES A WARNING A The engine exhaust from this product contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm Copyright 2005 EJ KIORITZ CORPORATION All Rights Reserved RULES FOR SAFE OPERATION A Kickback Safety Precautions for Chain Saw Users WARNING KICKBACK may occur when the nose or tip of the guide bar touches an object or when the wood closes in and pinches the saw chain in the cut Tip contact in some cases may cause a lightning fast reverse REACTION Kicking the guide bar up and back towards the operator Pinching the saw chain along the top of the guide bar may push the guide bar rapidly back towards the operator Either of these reactions may cause you to lose control of the saw which could result in serious personal injury The Kick Guard device is not installed on the guide bar when you purchase your ECHO chain saw The Kick Guard can be used in a majority of cutting operations and is especially recommended for beginners homeowners or chain saw novices Most cutting operations can be ac
11. TROKE OIL A two stroke engine oil meeting ISO L EGD ISO CD 13738 and JASO FC Standards must be used ECHO brand premium Power Blend Universal 2 Stroke Oil meets these standards Engine problems due to inadequate lubrication caused by failure to use an ISO L EGD and JASO FC certified oil such as ECHO premium Power Blend will void the two stroke engine warranty Emission related parts only are covered for two years regardless of two stroke oil used per the statement listed in the Emission Defect Warranty Explanation HANDLING FUEL MIXING INSTRUCTIONS Fill an approved fuel container with half of the required amount of gasoline Add the proper amount of two stroke oil to gasoline Close container and shake to mix oil with gasoline Add remaining gasoline close fuel container and remix IMPORTANT e Spilled fuel is a leading cause of hydrocarbon emissions Some states may require the use of automatic fuel shut off containers to reduce fuel spillage e Stored fuel ages Do not mix more fuel than you expect to use in thirty 80 days ninety 90 days when a fuel stabilizer is added e Stored two stroke fuel may separate ALWAYS shake fuel container thoroughly before each use AFTER USE DO NOT store a unit with fuel in its tank Leaks can occur Return unused fuel to an approved fuel storage container STORAGE Fuel storage laws vary by locality Contact your local government for the laws a
12. adius belongs on top 44 DANGER Kickback safety precaution for chain saw users Kickback may occur when the nose or tip of the guide bar touches an object or when the wood closes in and pinches the saw Chain in the cut The installation of a chain brake may be mandatory by law or as stipulated by insurance regulations in your area of operation You should inquire through local government offices your employer or your local dealer to ensure that your chain saw conforms to the required safety standard ECHO chain brakes have been designed and tested to comply with international safety standards as follows USA ANSI Standard B175 1 2000 Safety Requirement for chain saws Canada CSA Standard Z 62 1 CHAIN SAWS 44 WARNING ANSI Standard B175 1 2000 stipulates that the brake shall stop the chain 0 12 seconds at an engine speed of 13 500 r min It is the responsibility of the owner operator to ensure that the brake is serviced adjusted and tested strictly in accordance with the instructions as detailed herein in order to ensure that the brake performance is maintaind in compliance with the Standard B175 1 2000 CS 370 PREPARATION FOR USE Bolt A Dimple D Rear hole B Front hole C Guide bar Brake lever Front hand guard Brake connector Clutch cover Two nuts CS 370 AW WARNING Saw chain is sharp Always wear gloves when handling assembly otherwise serious personal in
13. complished with the Kick Guard in place Do not rely exclusively upon the safety devices built into your saw As a chain saw user you should take several steps to keep your cutting jobs free from accident or injury 1 With a basic understanding of kickback you can reduce or eliminate the element of surprise Sudden surprise contributes to accidents 2 Keep a good firm grip on the saw with both hands the right hand on the rear handle and the left hand on the front handle when the engine is running Use a firm grip with thumbs and fingers encircling the chain saw handles A firm grip will help you reduce kickback and maintain control of the saw Don t let go 3 Make sure that the area in which you are cutting is free from obstructions Do not let the nose of the guide bar contact a log branch or any other obstruction which could be hit while you are operating the saw 4 Cut at high engine speeds 5 Do not overreach or cut above shoulder height 6 Follow manufacturer s sharpening and maintenance instructions for the saw chain 7 Only use replacement bars and chains specified by the manufacturer or the equivalent CS 370 B Other Safety Precautions h Do not operate a chain saw with one hand Serious injury to the operator helpers bystanders or any combination of these persons may result from one handed operation A chain saw is intended for two handed use 2 Do not operate a chain saw when
14. d needle counterclockwise CCW to stop Turn L speed needle midway between full clockwise CW stop and CCW stop 5 Idle Speed Adjustment e Start engine turn Idle speed adjustment screw CW until the saw chain begins to turn then turn screw out CCW until the saw chain stops turning Turn screw out CCW an additional 1 4 turn WARNING Cutting attachment must not move when unit is idling 6 Accelerate to full throttle for 2 3 seconds to clear any excess fuel in the engine then return to idle Accelerate engine to full throttle to check for smooth transition from idle to high speed If engine hesitates turn L needle CCW 1 8 turn and repeat acceleration Continue adjustment until smooth acceleration results 7 Check idle speed and reset if necessary as described in item 5 If a tachometer is available idle speed should be set to 2 400 2 900 r min 44 CAUTION When starting idling adjustment speed should be adjusted not to rotate the saw chain Correct idle speed is adjusted 2 400 to 2 900 r min Or 1 4 turn CCW from the point the chain stops moving When you experience trouble with the carburetor contact your dealer 23 CS 370 Cleaner cover knob Air cleaner cover AIR FILTER e Check before every use e Loosen cleaner cover knob and remove air cleaner cover and filter e Brush off dust lightly or clean with compressed QO o air or replace the air filter S Ae Coyet e R
15. d of gt end of plug e Electrical problem e Ask your ECHO dealer plug wire wire e Spark gap incorrect e Adjust 0 6 mm to 0 7 mm Spark at No spark at 0 024 to 0 028 in plug plug e Covered with carbon e Clean or replace e Fouled with fuel e Clean or replace e Spark plug defective e Replace plug Engine e Internal engine problem e Ask your ECHO dealer does not crank Dies or e Air filter dirty e Clean or replace accelerates poorly e Fuel filter dirty e Clean or replace e Fuel vent blocked e Clean e Spark plug e Clean and adjust replace e Carburetor e Adjust e Cooling system blocked Clean e Exhaust port spark e Clean arrestor screen blocked 44 WARNING Fuel vapors are extremely flammable and may cause fire and or explosion Never test for ignition spark by grounding spark plug near cylinder plug hole otherwise serious personal injury may result CS 370 28 STORAGE AFTER USE e Inspect and adjust every part of the chain saw Completely clean every part and repair if necessary Apply thin coating of oil on metal parts to WARNING Do not store in an enclosure where fuel fumes may accumlate or reach an open flame prevent rust or spark e Remove chain and guide bar e Drain fuel tank pull starter slowly a few times to 4 CAUTION drain fuel from carburetor Do not lend or rent your chain saw without e Pour a small amount of clean motor oil into spark the Instruction manual and Safety manual plu
16. de bar The part that supports and guides the saw chain Saw chain Chain serving as a cuiting tool Bar tip guard Anti kickback device attached on the bar nose Cylinder cover The cooling airflow grill It covers the cylinder spark plug and silencer Front handle for the left hand Support handle located at the front of the engine housing Oil tank cap For closing the oil tank Starter handle Pull handle slowly until starter engages then quickly and firmly When engine starts return handle slowly DO NOT let handle snap back or damage to unit will occur Fuel tank cap For closing the fuel tank Throttle latch Device for temporality setting the throttle in a partially open position to aid starting Throttle trigger Device activated by the operator s finger for controlling the engine speed Rear handle for the right hand Support handle located towards the rear of the engine housing Throttle trigger lockout A safety lever which must be depressed before the throttle trigger can be activated in order to prevent the accidental operation of the throttle trigger Ignition switch Device for connecting and disconnecting the ignition system and thus allowing the engine to be started or stopped CS 370 OPERATOR SAFETY VIBRATION AND COLD It is believed that a condition called Raynaud s Phenomenon which affects the fingers of certain individuals may be brought about by exposure to v
17. ect to change without notice 29 CS 370 MWECHO 09014533 09999999
18. einstall air filter and cover Air filter OAN CHECK FUEL SYSTEM 9 V Check before every use Cylinder cover e After refueling make sure fuel does not leak from around fuel pipe fuel grommet or fuel tank cap e Incase of fuel leakage there is a danger of fire Stop using the machine immediately and request your dealer to inspect or replace SPARK PLUG Check periodically e The standard spark gap is 0 65 mm 0 026 in e Correct the spark gap if it is wider or narrower than the standard gap e Fastening torque 15 to 17 N m 130 to 145 in Ib d PS FUEL FILTER Check periodically e Do not allow dust to enter fuel tank e A clogged filter will cause difficulty in starting engine or abnormalities in engine performance Pull the fuel filter out through fuel inlet port with a 7 AN C AS Oil filter ED piece of steel wire or the like e When the filter is dirty replace it si s A Fuel filter e When the inside of the fuel tank is dirty rinsing oy D the tank out with gasoline can clean it Fuel tank cap Oil tank cap Ly OIL FILTER Check periodically e Do not allow dust to enter into oil tank e A clogged oil filter will affect the normal lubricating system e Pull it out through oil filling hole with a piece of steel wire or the like e lf the filter is dirty wash it in gasoline or replace it e When the inside of the tank gets dirty rinsing the tank out with
19. ere may be other replacement Part Number 890191 30131 components for achieving kickback protection For details please refer to the chain and bar combination sheet shown in the instruction manual TO AVOID KICKBACK Hold the chain saw firmly with both hands Don t let the nose of the guide bar contact any obstruction Tip contact may suddenly move the guide bar upward and backward which may cause serious injury Locate this safety decal on your unit The complete unit illustration found in the NOMENCLATURE OF PARTS section will help you locate them Make sure the decal is legible and that you understand and follow the instructions on it If a decal cannot be read a new one can be ordered from your ECHO dealer CS 370 4 PACKING LIST The ECHO product you purchased has been After opening the carton check for damage factory pre assembled for your convenience Due to Immediately notify your retailer or ECHO dealer of packaging restrictions guide bar and saw chain damaged or missing parts Use the packing list to installation and other assembly may be necessary check for missing parts ECHO CHAIN SAW 13 x 19 mm T wrench 4 mm Hexagonal Wrench Small screwdriver ECHO Power Blend ook 2 stroke oil sample ECHO j DISAN AL SAFETY AMEI INSTRUCTION MANUAL CHAIN SAW Limited warranty Warranty registration statement card Guide bar V7 1 Kick Guard
20. ersal 2 Stroke Oil may be mixed at 50 1 ratio for application in all ECHO engines sold in the past regardless of ratio specified in those manuals e Use of unmixed improperly mixed or fuel older than 90 days stale fuel may cause hard starting poor performance or severe engine damage and void the product warranty Read and follow instructions in the Storage section of this manual 44 DANGER Fuel is VERY flammable Use extreme care when mixing storing or handling or serious personal injury may result e Use an approved fuel container e DO NOT smoke near fuel e DO NOT allow flames or sparks near fuel e Fuel tanks cans may be under pressure Always loosen fuel caps slowly allowing pressure to equalize e NEVER refuel a unit when the engine is HOT e NEVER refuel a unit with the engine running e DO NOT fill fuel tanks indoors ALWAYS fill fuel tanks outdoors over bare ground e Securely tighten fuel cap after refueling e Inspect for fuel leakage If fuel leakage is found do not start or operate unit until leakage is repaired e Move at least 3 m 10 feet from refueling location before starting the engine CS 370 12 FUEL STATEMENT GASOLINE Use 89 Octane R M 2 mid grade or higher gasoline or gasohol known to be good quality Gasohol may contain up to 10 Ethyl grain alcohol or 15 MTBE methyl teriary butyl ether Gasohol containing methyl wood alcohol is NOT approved TWO S
21. ever stand on the tree that you are limbing When limbing caution is the word Be careful of the tip touching other limbs Always use both hands Don t cut with the saw overhead or aligned vertically with your body If the saw should kickback you may not have enough control to prevent possible injury BUCKING Bucking is the sawing of a log or fallen tree into smaller pieces There are a few basic rules which apply to all bucking operations Keep both hands on the handles at all times Support logs if possible When cutting on a slope or hillside always stand uphill Keep in mind that the wood is heavy and that it will bend and pinch the saw if improperly supported The trunk will weaken at the point where you make the cut unless the tree is lying on perfectly flat ground or supported as shown If you make the cut with the tree on the ground don t let the saw s chain dig into the earth it is harmful for the saw and you stand a good chance of being struck by flying debris To cut the trunk use the bucking and two cut eh sequence shown Finish cut l The first cut should be no deeper than one third the trunk diameter esis ein ee Ce ae ewer ee ee 44 DANGER e Kickback is generated when the rotation of the chain is arrested for some reason The most dangerous effect of this action occurs when the nose of the bar contacts another object the chain is momentarily stopped and all the energy of the eng
22. fall at a 45 degree angle and at least 3 m 10 feet from the trunk to avoid the trunk kicking back over the stump Begin the cut on the side to which the tree is to fall Cut a notch about 1 3 of the way into the tree The position of this notch is important since the tree will try to fall into the notch The felling cut is made on the side opposite the notch and at a level about 5 cm 2 in above the bottom of the notch Do not try to cut through to the notch with the felling cut The remaining wood between the notch cut and felling cut about 5 cm 2 in will act as a hinge when the tree falls guiding it in the desired direction Direction of fall MT One third tree ea When the tree starts to fall kill the engine place the saw on the ground and make your retreat quickly To fell big trees with a diameter exceeding twice the bar length start the notching cuts from one side and draw the saw through to the other side of the notch Start the back cut on one side of the tree pivoting the saw through to form the desired hinge on that side Then remove the saw for the second cut Insert the saw in the first cut very carefully so as not to cause kickback The final cut is made by drawing the saw forward in the cut to reach the hinge La ITOK OES ae Se gt gt ARA S525 ane e KS aat R505 RSID RISS EZE Ae 17 CS 370 LIMBING Limbing a fallen tree is much the same as bucking N
23. ffecting your area As a precaution store fuel in an approved airtight container Store in a well ventilated unoccupied building away from sparks and flames CHAIN LUBRICANT Proper lubrication of the chain while in operation reduces friction between the chain and the guide bar to a minimum and assures a longer service life CAP INDICATION Fuel oil tanks are indicated by the following illustrations e Use bar and chain oil of high quality for this purpose e Do not use used or reclaimed oil to avoid various oiler problems e Use ECHO bar and chain oil e When ECHO bar and chain oil is not available Use motor oil etc FUEL TANK CAP OIL TANK CAP e Use bar and chain oil of the following grades SAE No 30 in Summer SAE No 10 in winter or when cutting resinous trees e When refueling also refill chain oil OPERATION WHEN THE ENGINE IS COLD 4 amp CAUTION Make sure the bar and chain are free from any obstruction when starting the chain saw Move chain brake lever fully forward to lock chain brake before starting Fill the fuel tank with fuel mixture It is not permitted to fill fuel above the shoulder level of fuel tank Fill the chain oil tank with lubricant Do not over fill Move ignition switch to RUN position Push purge pump 3 to 4 times or until fuel is visible in purge pump i Pull choke control knob all the way out Choke Choke control knob i position T Sec
24. g or late afternoon hours when temperatures are cooler Ayana HOT SURFACES e During operation the muffler or catalytic muffler and surrounding cover become hot e Never suspend the saw on a lanyard with the engine running e Always use the saw from the right hand side of your body NEVER from the left side e Always wear proper safety clothing to protect your lower body from sharp saw chain and hot muffler e Always keep exhaust area clear of flammable debris during transportation or when storing otherwise serious property damage or personal injury may result SPARK ARRESTOR MUFFLER The spark arrestor muffler controls the exhaust noise and prevents hot glowing particles of carbon from leaving the muffler Make sure the spark arrestor screen is in good repair and properly seated in the muffler e Certain internal combustion engines operated on forest brush and or grass covered areas in the states of Washington Oregon Idaho California Minnesota New Jersey and Maine are required to be equipped with a spark arrestor This requirement also applies to all U S Forest Service lands In some of these areas the spark arrestor system must be certified per USDA Forest Service Regulation SAE J 335 Check with your local or state authorities for specific regulations in your area Failure to follow these requirements is a violation of the law CORRECT USE OF CHAIN BRAKE Rotational kickback Reduced r
25. g hole pull starter and crank the engine until piston reaches TOP DEAD CENTER NOTE e Store in a dry area free from dust e For future reference you should keep this Instruction manual and the Safety manual e If this Instruction manual or the Safety manual has become illegible or is lost please purchase a new one from your ECHO dealer TECHNICAL DATA cs 370 mm 393 x 245 x 277 15 5 in x 9 6 in x 10 9 in Power head dry k g 4 5 10 0 Ib Engine Air cooled two stroke single cylinder mL oms 36 3 2 218 c u in Without chain and guide bar Carburetor Diaphragm type Magneto Flywheel magneto CDI system Spark plug NGK BPM8Y Starter Recoil starter Power transmission Automatic centrifugal clutch 89 octane unleaded Do not use fuel containing methyl alcohol more than 10 ethyl alcohol or 15 Fuel Mixture ratio MTBE 50 1 ratio with ECHO Power Blend two stroke air cooled engine oil Tank capacity L 0 41 13 9 US fl oz ECHO bar and chain oil or motor oil Tank capacity L 0 28 9 5 US fl oz Guide bar and See page 21 for Chain and Guide Bar Combination saw chain Lubrication Adjustable automatic oil pump Engine speed Idle r min 2 400 2 900 Wide open throttle r min 12 000 12 500 Standard Front hand guard Rear hand guard features Anti vibration device Spiked bumper Throttle control lockout Chain brake Chain catcher Spark arrestor muffler Kick guard Technical data subj
26. hole brake band is positioned around clutch drum Tighten clutch cover nuts finger tight 6 Turn saw over and check brake band for correct position on clutch drum If brake band is not in place around drum remove cover make sure brake is unlocked and reinstall Tighten clutch cover nuts finger tight 44 WARNING Improper clutch cover assembly can result in serious injury and will cause severe saw damage if unit is started Never start or operate saw if brake band is not in place on clutch drum Always check chain brake operation after replacing cover Do not use saw if chain brake does not function properly ADJUSTING CHAIN TENSION IMPORTANT Always loosen clutch cover nuts before turning the chain tension adjuster otherwise the clutch cover and tensioner will be damaged 1 Remove spark plug lead See page 24 2 Loosen two clutch cover nuts if necessary 3 Hold the bar nose up and turn the adjuster screw clockwise until chain fits snugly against underside of the bar 4 Tighten both nuts with the bar nose held up 5 Pull the chain around the bar by hand Loosen the adjustment if you feel tight spots 6 When chain is properly tensioned tighten clutch cover nuts securely 20 to 23 N m 175 to 200 in Ib 7 Keep chain properly tensioned at all times CS 370 FUEL AND LUBRICANT Fuel Mix Chart 50 1 US METRIC GAS OIL GAS OIL 80 160 IMPORTANT e ECHO premium Power Blend Univ
27. ibration and cold Exposure to vibration and cold may cause tingling and burning followed by loss of color and numbness in the fingers The following precautions are strongly recommended because the minimum exposure which might trigger the ailment is unknown Keep your body warm especially the head and neck feet and ankles and hands and wrists Maintain good blood circulation by performing vigorous arm exercises during frequent work breaks and also by not smoking Limit the number of hours of operation Try to fill each day with jobs where operating the chain saw or other hand held power equipment is not required If you experience discomfort redness and swelling of the fingers followed by whitening and loss of feeling consult your physician before further exposing yourself to cold and vibration REPENT STRESS INJURY It is believed that over using the muscles and tendons of the finger hands arms and shoulders may cause soreness swelling numbness weakness and extreme pain to the areas just mentioned Certain repetitive hand activities may put you at a high risk for developing a repetitive stress injury RSI An extreme RSI condition is Carpal Tunnel Syndrome CTS which could occur when your wrist swells and squeezes a vital nerve that runs through the area Some believe that prolonged exposure to vibration may contribute to CTS CTS can cause severe pain for months or even years To reduce the risk of RSI CTS do the
28. ine a tice 2 mcm First cut K Board or flat stones throws the bar upwards and backwards towards the operator e The chain saw industry and government agencies have attempted to prescribe various safety devices but the best protection is to avoid kickback e Comply with the safety precautions as listed in this Manual and Safety Manual CS 370 18 CHAIN BRAKE OPERATION e Set the lever in the unlocked position before starting to cut e lf the brake is tripped by kickback reaction the chain will stop immediately Release the throttle to avoid possible damage to the engine or clutch e Do not attempt to operate the engine with the brake locked Kickback motion TESTING THE BRAKE e Start the engine on a solid level surface and run at a fast idle until warm Kickback e Hold the saw firmly by the handles and accelerate the engine to a fast idle e Slowly operate the chain brake lever while holding the saw firmly on the ground When the brake lever trips the chain should stop Immediately release the throttle trigger WARNING If the chain does not stop immediately return the saw to your authorized ECHO dealer for repair Chain brake function When the lever is pushed forward chain brake instantly stops the chain NOTE e For practice while cutting a small tree push the lever forward to lock the brake e Confirm that the brake works properly before each use e f the chain brake is
29. jury may result KICK GUARD TO BAR INSTRUCTIONS Tools Needed Two 11 mm 7 16 in Wrenches For saws with Kick Guard P N 2893201 and Symmetrical Low Kick type Double Guard guide bars 1 Install bolt A in rear hole B of Kick Guard and through front hole C in guide bar 2 IMPORTANT Dimple D in Kick Guard must engage recess E in guide bar 3 Tighten nut F and bolt A using 11 mm 7 16 in wrenches until snug Make certain Kick Guard is flush against guide bar 4 Tighten nut F 1 8 additional turn 5 Check to make certain Kick Guard is tight on guide bar GUIDE BAR AND SAW CHAIN INSTALLATION REMOVAL NOTE Move the chain brake lever Front hand guard fully rearward to remove or install the clutch cover to chain saw 1 Remove spark plug lead See page 24 2 Remove two clutch cover nuts and remove clutch cover 3 Remove bar and saw chain if necessary See Maintenance and Care section for guide bar saw chain maintenance procedures Guide bar adjuster hole Nuts Adjuster pin Clutch cover Brake connector Direction to tension the chain 4 Mount guide bar on studs and slide toward clutch to make saw chain installation easier Install chain with cutters on top of guide bar facing forward 5 Unlock the chain brake and install the clutch cover over the guide bar studs Ensure chain tension adjuster pin fits into the guide bar adjuster
30. min approximately at 7 000 r min prior to shipment from factory To increase the delivery volume turn the adjusting screw counterclockwise When the screw touches stopper and stops this position indicates maximum discharge volume 13 to 14 mL min at 7 000 r min Do not turn the adjusting screw beyond the maximum or minimum limit of volume adjustment CS 370 SETTING THE SAW CHAIN Preset tie strap Drive link wee Left hand cutter Top plate a E X Side plate Guard link NA peotousee oiL AS j Q o Right hand cutter Important points for proper maintenance of saw chain e Keep the cutters sharp at all times e Keep the left and the right cutters properly aligned Note that blunt or irregular cutters will result in poor cutting performance increased vibration of chains and premature breakage of the saw chain e Drive link serves to remove sawdust from the groove of the guide bar Keep the lower edge of the drive link sharp where indicated Sharpen lower edge SETTING SAW CHAIN e For setting saw chain round file 4 0 mm dia 5 32 in and flat file are used e To keep correct position and correct angle use the file holder Sure Sharp Hold the file horizontally CS 370 26 One fifth of file diameter remains above cutter edge e Place the depth gauge tool firmly on guide bar so that depth gauge protrudes Then file top of depth gauge with the flat file until flat with top
31. n and keep for future reference to learn proper safe operating techniques Safety manual Describe operating and safety instructions for this chain saw Front hand guard Guard between the front handle and the saw chain for protecting the hand from injuries and aiding in control of the chain saw if the hand slips off the handle This guard is used to lock the chain brake which is to stop the saw chain rotation Cleaner cover knob Device for installing the air cleaner cover 5 Air cleaner cover Covers air filter 6 Purge pump When starting engine push 10 11 12 purge pump 3 or 4 times Choke control knob Device for enriching the fuel air mixture in the carburetor to aid cold starting Rear hand guard Extension on the lower part of the rear handle for protecting the hand from the chain if it breaks or degrooves Clutch cover Protective cover to the guide bar saw chain clutch and sprocket when the chain saw is in use Chain tension adjuster Device to adjust chain tension Chain catcher A projection designed to reduce the risk of the operator s right hand from being hit by a chain which has broken or derailed from the guide bar during cutting Spiked bumper Device fitted in front of the guide bar mounting point acting as a pivot when in contact with a tree or log 13 14 15 16 17 18 19 20 21 22 23 24 25 Gui
32. of the depth gauge tool Depth gauge tool Remove until flat with tool Be sure to round off the front edge of the depth gauge 91P 85 Properly filed cutters are shown in illustration 91VG 80 When setting of the chain is finished soak it in oil and wash away filings completely before using When chain has been filed on the bar supply sufficient oil to it rotate the chain slowly to wash away the filings before using again If the chain saw is operated with filings clogged in the groove the saw chain and the guide bar Top plate filing angle Side plate angle will be damaged prematurely If the saw chain becomes soiled with resin for 91P 50 instance clean it with kerosene and soak in it oil 21V G 60 0 64 mm 0 025 in NOTE These angles are referred to as Oregon 91P or 91VG To sharpen other follow chain manufacturer s instruction Top plate cutting angle Depth gauge 2 CS 370 TROUBLESHOOTING Problem E hard to start does not start Engine Fuel at No fuel e Fuel filter clogged e Clean or replace cranks carburetor at carburetor Fuel line clogged e Clean e Carburetor e Ask your ECHO dealer Fuel at _ No fuel at e Carburetor e Ask your ECHO dealer cylinder cylinder Muffler wet e Fuel mixture is too rich e Open choke with fuel e Clean replace air filter e Adjust carburetor e Ask your ECHO dealer Spark at No spark at e Ignition switch off e Turn switch on en
33. powered chain saws 21 CS 370 MAINTENANCE AND CARE Your ECHO chain saw is designed to provide many hours of trouble free service Regular scheduled SKILL LEVELS Level 1 Easy to do Most required tools come maintenance will help your chain saw achieve that goal If you are unsure or are not equipped with the necessary tools you may want to take your unit to an ECHO Service Dealer for maintenance To help you decide whether you want to DO IT YOURSELF or have the ECHO Dealer do it each maintenance task has been graded If the task is not listed ask your ECHO dealer for repairs with unit Level 2 Moderate difficulty Some specialized tools may be required Level 3 Experience required Specialized tools are required ECHO recommends that the unit be returned to your ECHO dealer for servicing ECHO offers REPOWER Maintenance Kits and Parts to make your maintenance job easier Just below each task heading are listed the various part numbers required for that task Ask your ECHO dealer for these parts MAINTENANCE INTERVALS Required Skill level aily or efore use Every refuel 3 Months or 90 Hours 6 Months or 270 Hours Yearly or 600 Hours D B Component system Maintenance procedure Recommended ECHO Dealer Maintenance Procedures Cylinder Exhaust Port InspectiClean Decarbon 3 we Do It Yourself Maintenance Procedures Air Fiter InspectiClean Replace 1 we Rf Automatic Oiler
34. rouble in winter Cold weather MN YAR i e Remove air cleaner cover Remove plug from storage position SSAA warm weather position and install into cold weather storage position Warm weather position NOTE For operation at normal temperature return the plug to its original place 5 C 41 F It causes over heating of the engine CS 370 20 CHAIN AND GUIDE BAR COMBINATION The following combinations are recommended for model CS 370 Saw Chain Length ECHO Part No Pitch Type Links mm in Double Guard mm in OREGON 356 14 14A0CD3752 9 53 3 8 91P 91VG 52 406 16 16A0CD3757 9 53 3 8 91P 91VG 57 457 18 18A0CD3762 9 53 3 8 91P 91VG 62 Standard configuration GUIDE BAR Low kickback Replacement guide bars The following guide bars may be considered to have equivalent kickback energy e Sprocket nose guide bars of the same length and nose radius same pitch and having the same number of teeth e Hard nose guide bars of the same length and nose radius as a sprocket nose bar SAW CHAIN Low kickback 44 CAUTION Do not use replacement saw chain unless it has been designated as meeting the ANSI B175 1 2000 kickback performance requirements when tested on the representative sample of chain saws below 3 8 c i d specified in ANSI B175 1 2000 NOTE LOW KICKBACK SAW CHAIN meets the kickback performance requirements of ANSI B175 1 2000 safety requirements for gasoline
35. rts release throttle trigger to idle engine otherwise brake damage may occur Never use throttle latch for cutting Use it only when starting the engine WHEN THE ENGINE IS WARM e Move chain brake lever fully forward to lock chain brake before starting e Confirm there is fuel and chain oil in the tanks e Move ignition switch to RUN position e Securely hold the chain saw as shown and pull starter handle e Choke may be used if necessary but be sure to push it back on first firing sound e After starting the engine pull front hand guard towards the operator immediately Chain brake unlocked position CS 370 14 RUNNING When engine starts keep idling for a few minutes e Set the brake lever in the unlocked position before starting to cut e Pull throttle trigger gradually and increase revolution of the engine e The chain starts running when the engine reaches 3 800 r min approximately e Confirm proper acceleration and lubrication of chain and bar e Do not run the engine at high speed unnecessarily e Be sure that saw chain stops moving when throttle trigger is released STOPPING e Release throttle trigger and move ignition switch down to STOP position NOTE If engine does not stop pull choke control knob out fully to stop engine Return the unit to your authorized ECHO dealer to check and repair stop switch before starting the engine again _ Throttle trigger lt CHECKING C
36. tal injury WARNING NOTE The safety alert symbol accompanied by the This enclosed message provides tips for use word WARNING calls attention to an act or care and maintenance of the unit condition which CAN lead to serious IMPORTANT personal injury or death if not avoided The enclosed message provides information necessary for the protection of the unit AV CAUTION The safety alert symbol accompanied by the word CAUTION calls attention to an act or condition which may lead to minor or moderate personal injury if not avoided 3 CS 370 SYMBOL FORM Symbol form shape Symbol description application Symbol form shape Symbol description application Carefully read the operators manual Wear eyes ears and head Chain oil pump protection Chain brake operation Chain oiler adjustment Emergency stop Carburetor adjustment Low speed mixture Choke control Cold Start Carburetor adjustment position choke closed High speed mixture Oil and gasoline mixture Carburetor adjustment Idle speed DECALS Part Number X503 007040 Part Number X524 001640 Cs 370 WARNING Read and follow all safety f_ precaution in the instruction manual vw Failure to follow instructions could result in serious personal injury GUIDE BAR CHAIN PART NO TYPE LINKS 14A0CD3752 OREGON 91P 91VG 52 16A0CD3757 OREGON 91P 91VG 57 18A0CD3762 OREGON 91P 91VG 62 Or equivalent Note Th
37. the front handlebar and your right hand on the rear handle so you can operate the throttle trigger with your right index finger Before attempting to fell a tree cut some small logs or limbs Become thoroughly familiar with the controls and the responses of the saw Start the engine see that it is running properly Squeeze the trigger to open the throttle wide open and start the cut If the chain is properly sharpened the cutting should be relatively effortless It is not necessary to press down hard to make the saw cut Pushing the saw too hard will slow the engine and cutting will actually be more difficult Some material may adversely affect the housings of your chain saw Example palm Tree Acid fertilizer etc To avoid housing deterioration carefully remove all packed sawdust around clutch and guide bar area and wash with water Coat metal parts with light oil 16 FELLING THE TREE A falling tree can seriously damage anything it may hit a car a house a fence a power line or xS 3 m 10 feet another tree TT There are ways to make a tree fall where you want Direction of fall it so first decide where that is 45 Before cutting clear the area around the tree 5 You will need good footing while working and you 4S ANS should be able to work the saw without hitting any D obstacles Next select a path of retreat Retreat Not this way When the tree begins to fall you should retreat away from the direction of
38. urely hold the chain saw as shown and pull starter handle several times until first firing sound Push choke control knob all the way in Pull starter handle to start the engine After starting the engine pull front hand guard towards the operator immediately Chain brake unlocked position CS 370 WHEN THE ENGINE IS HARD TO START Chain brake CAUTION Make sure the bar and chain are free from any obstruction when starting the chain saw e Move chain brake lever fully forward to lock chain brake before starting e Press throttle trigger lockout down while grasping throttle trigger and push in throttle latch e Move ignition switch to RUN position e Securely hold the chain saw as shown and pull starter handle e When engine starts immediately squeeze throttle trigger to release throttle latch and pull front hand guard towards the operator immediately Chain brake unlocked position 44 CAUTION When using throttle latch for starting keep the brake in lock position After starting the engine squeeze throttle trigger slightly to release throttle latch and pull front hand guard towards the operator immediately Chain brake unlocked position Do not increase engine speed while chain brake is locked Use the chain brake only in starting or in emergencies 44 CAUTION The chain will attempt to rotate when engine is started with throttle latch engaged After engine sta
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