STIHL GS 461 - Big.Store.ro
Contents
1. 3443BA010 KN Bend back the retaining lugs 2 e Pull out spark arresting screen 3 Clean the dirty spark arresting screen replace if damaged or heavily carbonized Refit the spark arresting screen in reverse order of steps GS 461 Spark Plug e If the engine is down on power difficult to start or runs poorly at idle speed first check the spark plug e Fit anew spark plug after about 100 operating hours or sooner ifthe electrodes are badly eroded Install only suppressed spark plugs of the type approved by STIHL see Specifications Remove the spark plug Remove coarse dirt from the machine Turn screw plug above the rear handle in the direction of the arrow and remove filter cover screw plug is secured in the filter cover Lift the air baffle 1 up and off Unplug spark plug boot 2 Unscrew spark plug Checking the spark plug readjust if necessary see Specifications Rectify the problems which have caused fouling of the spark plug Possible causes are 2411BA032 KN 000BA039 KN English 000BA045 KN warnine If the spark plug comes with a detachable adapter nut 1 screw the adapter onto the thread and tighten it down firmly to reduce the risk of arcing and fire Installing the spark plug z A 3 j e Clean dirty spark plug 8 Check electrode2. 2411BA028 KN Flip the guide bar each time the chain is changed to avoid uneven wear especially at the sprocket nose and on the bottom Periodically clean the water inlet hole 1 water outlet channel 2 and bar groove 3 Measure groove depth using the measuring tool on the file gauge special accessory in the area with the greatest wear If the groove is not at least 6 mm deep Replace guide bar Otherwise the drive links will grind against the base of the groove tie straps will not lie against the bar If the guide bar runs in the cut Check guide bar for uneven wear ridge offset Flip the guide bar if necessary remove the bore of the guide bar with guide bar straightener GS 461 Checking and Replacing the Chain Sprocket Remove chain sprocket cover diamond abrasive chain and guide bar Replacing rim sprocket zZ lt Oo x fo lt di x a Ifthe diamond abrasive chain is being replaced also replace the rim sprocket If the wear marks arrows are deeper than 0 5 mm otherwise the service life of the diamond abrasive chain is reduced use check gauge special accessory to test Using two diamond abrasive chains in alternation helps preserve the chain sprocket Removing rim sprocket If only the rim sprocket is removed the clutch drum does not need to be removed GS 461 x 3 gt L a A Remove cap 1 Remove rim sprocket
3. 2411BA019 KN e Drain the fuel tank Pull the fuel pickup body out of the tank with a hook and disconnect it from the hose Connect a new fuel pickup body to the hose e Return the fuel pickup body to the tank 16 Starting Stopping the Engine The four positions of the Master Control lever zZ lt So T lt a Ss STOP or 0 engine off ignition is switched off Run I engine is running or can start Warm start this position is for starting the warm engine Cold start this position is for starting the cold engine Adjusting the Master Control lever The throttle trigger lockout and throttle trigger must be pressed simultaneously to adjust the Master Control lever from run I to cold start To set the Master Control lever to warm start first set it to cold start then push the Master Control lever into the warm start x position Changing to warm start x is only possible from the cold start position When the throttle trigger is squeezed the Master Control lever returns from warm start x to run I To switch off the engine set the master control lever to STOP or 0 Position cold start M4 Ifthe engine is cold Ifthe engine stalls during opening of throttle after starting Ifthe fuel tank has run empty engine stalled out Position warm start If engine is warm once the engine has been running for approx one minute
4. When the engine has fired for the first time After ventilation of the combustion chamber if the engine was flooded GS 461 Connect concrete cutter to water supply network lt w N o lt a x a e Connect concrete cutter to water supply network min 1 5 bar e Before starting open shut off valve arrow completely Hold concrete cutter There are two ways to hold the concrete cutter during starting GS 461 English On the ground Between the knees or thighs z g N So lt a S So So e Place the concrete cutter securely Clamp the rear handle between the on the ground assume a steady knees or thighs stance the diamond abrasive chain must not touch any objects or the ground Grip the handlebar firmly with the left hand thumb wrapped around the handlebar Press the concrete cutter firmly against the ground holding the front handle with your left hand thumb wrapped round the handle e Place your right foot into the rear handle 17 English Starting Decompression valve z lt ise a So lt ao x a Press the button the decompression valve will be opened The decompression valve is closed automatically when the engine fires for the first time For this reason press the button again before each additional starting attempt A cancer e With the right hand pull the starter There must not be anyone within the grip slowly until you
5. A Arne Ifthe diamond abrasive chain continues to keep rotating in idle even after adjustment have the concrete cutter checked by a servicing dealer Speed erratic when idling poor acceleration despite low speed screw 1 4 zZ x se e S lt dd Q vt n idle speed setting is too lean turn the low speed adjusting screw L counterclockwise until the engine runs and accelerates smoothly Whenever the low speed adjusting screw L has been adjusted it is usually also necessary to readjust the idle speed adjusting screw LA Correcting the carburetor setting for use at high altitudes The setting may have to be marginally corrected if engine performance is unsatisfactory at high altitudes e Check standard setting Letthe engine warm up e Turn the high speed adjusting screw H slightly clockwise leaner max up to the stop 22 Elon After descending from a high altitude restore the carburetor setting to the standard setting If you make the setting too lean it will increase the risk of engine damage through lack of lubrication and overheating Spark Arresting Screen in Muffler In some countries the muffler is fitted with a spark arresting screen f engine performance deteriorates check the spark arresting screen in the muffler Let the muffler cool down 3443BA009 KN Remove four screws Remove exhaust casing 1 of the muffler
6. Before starting open the shut off valve completely and ensure a supply of water to the diamond abrasive chain do not allow diamond abrasive chain to run dry Holding and guiding the machine sey z x o x BO lt ao x Always hold the machine firmly with both hands Right hand on the rear handle even if you are left handed To ensure reliable control wrap your thumbs tightly around the handlebar and handle The object that is to be cut must be positioned firmly always guide the machine to the workpiece never vice versa During work Ensure you always have a firm and safe footing In the event of impending danger or in an emergency switch off the engine immediately by moving the master control lever to STOPor0 The machine is operated by only one person There should not be any other person within the working area English Use extreme caution with openings recesses etc someone could be standing behind them look beforehand Never let the machine run unattended When the engine is running The diamond abrasive chain continues to run for some time after the throttle trigger has been released Risk of injury due to coasting effect Beware of slipping on ice water snow or uneven ground Never work on a ladder or on any other unsteady support Do not work above shoulder height and never operate the machine with one hand risk of accidents Ensure th
7. a Ss Do not throw your STIHL product in the garbage can Take the product accessories and packaging to an approved disposal site for environment friendly recycling Contact your STIHL servicing dealer for the latest information on waste disposal GS 461 EC Declaration of Conformity ANDREAS STIHL AG amp Co KG Badstr 115 D 71336 Waiblingen hereby confirms that Model Stone cutter Make STIHL Type GS 461 Serial identification number 4252 Displacement 76 5 cm conform to the specifications of Directives 2006 42 EC and 2004 108 EC and have been developed and built in compliance with the following standards EN ISO 12100 EN 55012 EN 61000 6 1 The technical documentation has been retained by ANDREAS STIHL AG amp Co KG Product approval The year of construction and the serial number are shown on the machine Waiblingen 03 05 2012 ANDREAS STIHL AG amp Co KG PP IS Head of Product Group Management Elsner GS 461 Quality Certification ISO 9001 TC Aa e N O lt a So Q oO All STIHL products comply with the highest quality standards An independent organization has certified that all products manufactured by STIHL meet the strict requirements of the ISO 9001 standard for quality management systems in terms of product development materials purchasing production assembly documentation and customer service English 35 English 36 GS 461
8. 0458 761 0121 A englisch 458 761 0121 A
9. Engine power to 4 3 KW 5 8 HP ISO 7293 at 9 800 rpm Idie speed 2 500 rpm Engine cut off speed 13 500 rpm Ignition System Electronic magneto ignition Spark plug resistor Bosch WSR 6 F type NGK BPMR7A Electrode gap 0 5 mm Fuel System All position diaphragm carburetor with integral fuel pump Fuel tank capacity 0 78L Weight dry without bar and chain 7 6 kg GS 461 English Cutting Attachment GS 461 The K factor in accordance with Directive 2006 42 EC is 2 5 dB A for the sound pressure level and sound power level the K factor in accordance with Directive 2006 42 EC is 2 0 m s for the vibration measurement Rollomatic G guide bar Bar lengths 3 8 pitch Groove width 40 cm 1 6 mm REACH 3 8 diamond abrasive chain REACH is an EC regulation and stands for the Registration Evaluation Authorisation and Restriction of Chemical substances 36 GBM Type 3210 Pitch Drive link gauge 3 8 9 32 mm 1 6 mm For information on compliance with the REACH regulation EC No 1907 2006 see www stihl com reach Chain sprockets 7 tooth for 3 8 rim sprocket Sound and vibration levels When determining sound and vibration levels idling and full load are taken into account in a ratio of 1 6 For further details concerning compliance with the Physical Agents Directive Vibration 2002 44 EC see www stihl com vib Sound pressure level Lpeq to ISO 11201 105 dB A Sound power lev
10. GS 461 If necessary use wedges and if necessary leave small ridges that hold the part that is to be separated in position Break these ridges later Before finally separating the part determine how heavy the part is how it can move after separation whether it is under tension When breaking out the part do not endanger assistants Plunge cutting Begin cutting with the concrete cutter at full throttle z lt o So lt ao x N 1 Apply the lower portion of the guide bar nose 2 Swing slowly into the plunge cutting position 3 Make the plunge cut very carefully When making the plunge cut into existing narrower joints proceed with extreme care English Cut in several passes AR e Mark cutting line A Work along the cutting line When making corrections do not tilt the diamond abrasive chain always reposition it afresh 2411BA005 KN zZ x o So So lt ao x a English Cutting round and hollow bodies Shaping pipe always position it anew instead if necessary use wedges and if necessary leave small ridges that hold the part that is to be separated in position Break these ridges later 2411BA007 KN 180BA007 KN Secure pipes round bodies etc Secure pipes round bodies etc against rolling away against rolling away e Mark a cutting line when Mark a cutting line when determining the cutting line avoid determining the cutting l
11. lt t 5 o lt a x N e Position the guide bar over the bolts 1 align drive links so that the position lines up with the symbol arrow warnine If the drive links are not directionally aligned one behind the other correctly the diamond abrasive chain and chain sprocket will be damaged beyond repair 12 Position the right locating hole 2 over the peg of the tensioner slide simultaneously place the diamond abrasive chain over the sprocket wheel 3 Turn screw 4 to the right until there is very little diamond abrasive chain sag on the underside of the bar and the lugs of the drive links engage in the bar groove Refit the chain sprocket cover and then screw on the nut by hand until it is fingertight e Go to chapter Tensioning the diamond abrasive chain Moving the guide bar Only move the guide bar if the diamond abrasive chain cannot be tensioned properly Removing the chain sprocket cover Remove guide bar with diamond abrasive chain e Fit the diamond abrasive chain starting at the nose of the guide bar e Position the guide bar over the bolts 1 align drive links so that the position lines up with the symbol arrow warnine If the drive links are not directionally aligned one behind the other correctly the diamond abrasive chain and chain sprocket will be damaged beyond repair e Position the left locating hole 5 over the peg of the tensioner
12. 2 Inspect transport profile on the clutch drum 3 if there are also heavy signs of wear also replace the clutch drum 3 Installing rim sprocket e Fitrim sprocket 2 e Fitcap 1 Replacing clutch drum z Z a x So lt ao x a Remove cap 1 Remove rim sprocket 4 Use a screwdriver to remove the E clip 2 Remove washer 3 Remove clutch drum 5 with needle cage 6 from the crankshaft English Installing the clutch drum Clean crankshaft stub and needle cage and lubricate with STIHL lubricant special accessory Slip the needle cage onto the crankshaft stub Fit clutch drum Fit rim sprocket Refit washer and E clip on the crankshaft Fit cap 27 English Maintain and sharpen diamond abrasive chain Maintaining the diamond abrasive chain After finishing work Remove diamond abrasive chain and guide bar Rinse diamond abrasive chain and guide bar with water e Dry diamond abrasive chain and guide bar Spray diamond abrasive chain and guide bar with STIHL multispray in particular the bearing of the sprocket nose corrosion protection Check diamond abrasive chain regularly Check the diamond abrasive chain for cracks and damaged rivets Replace damaged or worn chain components contact a servicing dealer Never use a dull or damaged diamond abrasive chain this leads to increased physical strain increased vibration load unsatisfactory
13. and fingers If any of the above symptoms appear e g tingling sensation in fingers seek medical advice Maintenance and repairs The machine must be serviced regularly Do not attempt any maintenance or repair work not described in the Instruction Manual All other work should be carried out by a servicing dealer STIHL recommends that maintenance and repair work be carried out only by authorized STIHL dealers STIHL dealers receive regular training and are supplied with technical information Use only high quality spare parts Otherwise there may be a risk of accidents or damage to the machine Contact a servicing dealer if in doubt STIHL recommends the use of genuine STIHL spare parts Such parts have been optimized for the machine and the user s requirements Before starting any maintenance or repair work and before cleaning the machine always stop the engine risk of injury Exception adjustment of carburetor and idle speed To reduce the risk of fire due to ignition outside the cylinder move the slide control to STOP or 0 before turning the engine over on the starter with the spark plug boot removed or the spark plug unscrewed Do not service or store the machine near a naked flame risk of fire due to the fuel Check fuel cap regularly for tightness Use only spark plugs that are in perfect condition and have been approved by STIHL see Specifications Inspect ignition lead insulation in goo
14. feel it engage swivel range of the concrete cutter and then give it a brisk strong pull simultaneously press down on the handlebar do not pull the starter rope out all the way risk of breakage Do not let the starter grip snap back guide it vertically back into the housing so that the starter rope can rewind properly ci z lt N A lt ao x a Starting the concrete cutter Before starting open the shut off valve completely and ensure a supply of water to the diamond abrasive chain do not allow diamond abrasive chain to run dry 18 O o c r m n rm rn Cc o 2411BA024 KN Simultaneously press the throttle trigger lockout 2 and throttle trigger 3 set the master control lever Position cold start 4 If engine is cold even if the engine has stalled during opening of throttle after starting Position warm start x If engine is warm once the engine has been running for approx one minute Hold and start the concrete cutter GS 461 When the engine has turned over forthe first time 2411BA026 KN Move the Master Control lever 1 to the position warm start x e Press the button on the decompression valve Hold and continue cranking the concrete cutter Once the engine is running gt Sd n a So lt ao x a Blip the throttle trigger 2 the Master Control lever 1 jumps to run I and the engine begins to idl
15. gap A and G Install in the spark plug and tighten Press on the spark plug boot 1 firmly e Insert the air baffle 2 from above Too much oil in fuel mix e Mount filter cover Dirty air filter Unfavorable running conditions GS 461 23 English Replacing the Starter Rope and Rewind Spring Removing the fan housing zZ lt se o lt a x N Remove screws 1 e Push the hand guard 2 upwards Pull the bottom of the fan housing 3 away from the crankcase and remove downwards 24 Replacing a torn starter rope Carefully press the spring clip 4 off of the axle with a screw driver or suitable pliers Remove washer 5 Remove the pawls 6 Remove the rope rotor 7 Lever the rope out of the starter handle with a screwdriver Remove the remainder of the rope from the rotor and starter handle z lt D 5 lt a oO A Thread a new ElastoStart starter rope from top to bottom through the starter handle and Press the remaining rope into the handle until the nipple is flush with the handle 2411BA036 KN Thread the starter handle with the starter rope from top to bottom through the rope guide bush 8 Pull the starter rope through the rope rotor 7 and secure it with an overhand knot Coat the bearing bore in the rope rotor with non resinous oil Slip the rope rotor onto the starter post 9 turn it back and forth a little until the anch
16. results and increased wear If cutting performance begins to deteriorate check the sharpness of the diamond abrasive chain resharpen as needed To do this briefly cut through abrasive material e g sandstone aerated concrete or asphalt 28 GS 461 English Maintenance and Care The following information applies under normal operating conditions The specified intervals must be shortened accordingly when working for longer than normal or under difficult cutting conditions 5 v extensive dust etc 3 2 x ae S 5 2 2 jZ ills E o s 5 u 2 E 3 3 a E e Jo aa ie S 5 2 5S 8g8 S Sla s f c vw 23 jas amp le fs amp visual inspection condition leaks x x Complete machine clean x Throttle trigger throttle trigger lockout master con Checking operation x x trol lever check x Fuel pickup body in fuel tank replace x x x Fuel tank clean x Water supply chain lubrication check x check pay attention to sharpness x x Check chain tension retension if necessary also check every 15 minutes while working retension X x Diamond abrasive chain if necessary sharpen x clean and spray with STIHL multispray x check wear damage action of sprocket nose x clean and spray with STIHL multispray x Guide bar flip x deburr x replace x x Chain sprocket check replace if necessary x clean x x Air filter replace x check x x Antivibration element
17. satisfaction and troublefree use of the machine Please contact your dealer or our sales company if you have any queries concerning your machine Your lau Ce la Hans Peter Stihl CE This instruction manual is protected by copyright All rights reserved especially the rights to reproduce translate and process with electronic systems English Guide to Using this Manual Pictograms Pictograms that appear on the machine are explained in this Instruction Manual Depending on the machine and equipment version the following pictograms may appear on the machine Fuel tank fuel mixture of gasoline and engine oil mi En Direction of chain travel Tension diamond abra VA sive chain Actuate decompression valve Water connection shut off cock Symbols in text A warnine Warning where there is a risk of an accident or personal injury or serious damage to property E once Caution where there is a risk of damaging the machine or its individual components Engineering improvements STIHL s philosophy is to continually improve all of its products For this reason we may modify the design engineering and appearance of our products periodically Therefore some changes modifications and improvements may not be covered in this manual Safety Precautions and Working Techniques Because the chain of a concrete cutter runs at very high speeds spe cial safety precautions mus
18. slide simultaneously place the diamond abrasive chain over the sprocket wheel 3 Turn screw 4 to the right until there is very little diamond abrasive chain sag on the underside of the bar and the lugs of the drive links engage in the bar groove Refit the chain sprocket cover and then screw on the nuts by hand until they are fingertight Goto chapter Tensioning the diamond abrasive chain GS 461 Tension diamond abrasive chain 2411BA0015 KN For retensioning during operation e Switch off the engine Put on protective gloves Loosen nuts Raise the guide bar at the nose Use the screwdriver to turn the screw 1 to the right until the distance a approx 5 mm If the distance a approx 5 mm cannot be set due to an elongated diamond abrasive chain move guide bar see installing guide bar and diamond abrasive chain e Raise the guide bar further and tighten the nuts securely GS 461 zZ x ite is lt L ao x a Check tension of diamond abrasive chain diamond abrasive chain can be pulled across the guide bar by hand A new diamond abrasive chain must be retensioned more frequently than one that has been in use already for an extended period Check chain tension frequently see Operating Instructions English Check tension of diamond abrasive chain 2411BA016 KN Switch off the engine Diamond abrasive chain can
19. tool must be operated maintained and stored with the due care and attention described in this owner s manual The user is responsible for all damage caused by non observance of the safety precautions operating and maintenance instructions in this manual This includes in particular Alterations or modifications to the product not approved by STIHL Using tools or accessories which are neither approved or suitable for the product or are of a poor quality Using the product for purposes for which it was not designed Using the product for sports or competitive events Consequential damage caused by continuing to use the product with defective components Maintenance Work All the operations described in the Maintenance Chart must be performed on a regular basis If these maintenance operations cannot be performed by the owner they should be performed by a servicing dealer STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL GS 461 servicing dealer STIHL dealers are regularly given the opportunity to attend training courses and are supplied with the necessary technical information If these maintenance operations are not carried out as specified the user assumes responsibility for any damage that may occur Among other parts this includes Damage to the engine due to neglect or deficient maintenance e g air and fuel filters inco
20. STIHL I STIHL GS 461 instruction Manual Original Instruction Manual Printed on chlorine free paper ANDREAS STIHL AG amp Co KG 2012 0458 761 0121 A VA3 J12 0000006258_002_GB Printing inks contain vegetable oils paper can be recycled Contents Guide to Using this Manual Safety Precautions and Working Techniques Sample applications Cutting Attachment Mount guide bar and diamond abrasive chain Tension diamond abrasive chain Check tension of diamond abrasive chain Fuel Fueling Starting Stopping the Engine Operating Instructions Air Filter System Remove air filter Cleaning the Air Filter Adjusting the Carburetor Spark Arresting Screen in Muffler Spark Plug Replacing the Starter Rope and Rewind Spring Storing the Machine Taking Care of the Guide Bar Checking and Replacing the Chain Sprocket Maintain and sharpen diamond abrasive chain Maintenance and Care Minimize Wear and Avoid Damage Main Parts Specifications STIHL GS 461 11 13 13 14 15 16 19 20 20 21 21 22 23 24 26 26 27 28 29 31 32 33 Special Accessories 34 Maintenance and Repairs 34 Disposal 34 EC Declaration of Conformity 35 Quality Certification 35 English Dear Customer Thank you for choosing a quality engineered STIHL product This machine has been built using modern production techniques and comprehensive quality assurance Every effort has been made to ensure your
21. This could damage the cap and cause fuel to leak out Secure the bayonet filler cap tightly after refueling Diamond abrasive chain The diamond abrasive chain guide bar and chain sprocket must match each other and your concrete cutter Use only approved diamond abrasive chains If unauthorized chains are used aggressive cutting cannot be ruled out This may lead to uncontrolled and exceedingly dangerous reaction forces kickback in the machine risk of fatal injuries Only use diamond abrasive chain for the specified materials observe diamond abrasive chain codes Always cut with water Before fitting used diamond abrasive chains check that they are not cracked chipped check also that there are no damaged or missing segments signs of overheating discoloration Never use diamond abrasive chains that are cracked or have chipped segments Visit your servicing dealer Before starting Check that concrete cutter is properly assembled and in good condition refer to appropriate chapters in the Instruction Manual Check fuel system for leaks especially the visible parts e g filler cap hose connections fuel pump Do not start the engine if there are leaks or damage risk of fire Have the machine repaired by a servicing dealer before using it functional front hand guard Check chain sprocket Sprocket nose moves easily Correctly mounted guide bar The diamond abrasive c
22. and equipment Transporting the machine Always stop the engine and attach the chain scabbard Carry the machine only by the top handle guide bar towards the rear with the hot muffler facing away from the body Avoid touching hot parts of the machine especially the surface of the muffler risk of burns In vehicles Properly secure your machine to prevent turnover damage and fuel spillage Refueling Gasoline is an extremely flammable fuel keep clear of naked flames and fire do not spill any fuel no smoking Switch off the engine before refueling Never refuel the machine while the engine is still hot the fuel may spill over risk of fire Open the fuel filler cap carefully so that any excess pressure is relieved gradually and fuel does not splash out The machine may only be refueled in a well ventilated place Clean the machine immediately if fuel is spilled Change your clothes immediately if they are contaminated with fuel Dust may collect on the engine unit particularly around the carburetor If the dust is soaked with gasoline it may catch fire For this reason ensure that the dust is always removed Check for fuel leakage while refueling and during operation Never start the engine if fuel has been spilled or is leaking Fatal burns may result Bayonet filler cap z x x o lt cd N n Never use a tool to open or close the bayonet filler cap
23. and or correct the idle setting regularly Have the machine repaired by a STIHL servicing dealer if the diamond abrasive chain continues to run nevertheless Reactive forces The most frequently occurring reactive forces are pull in and pushback Pull in A 2411BA001 KN When the diamond abrasive chain on the bottom of the guide bar overbucking is jammed or encounters a solid object the concrete cutter may suddenly be drawn forward to the workpiece Pushback B z lt a gt S lt ao x When the diamond abrasive chain on the top of the guide bar underbucking is jammed or encounters a solid object the concrete cutter may suddenly be driven straight back toward the operator GS 461 002BA146 KN Do not allow the guide bar to become jammed Always be aware that the object to be cut may move and other factors may cause the cut to close and jam the diamond abrasive chain The object to be cut must be secured and supported so that the cut remains open during and after cutting Do not twist the guide bar in the cut Working abrasive cutting Ensure sufficient water supply to diamond abrasive chain do not allow diamond abrasive chain to run dry Always wet cut regardless of the material to be cut The diamond abrasive chain must be guided straight in the cut without wedging Never exert lateral pressure on t
24. at the working area is clear watch out for obstacles holes and pits Do not work alone keep within calling distance of others in case help is needed More care and attention than usual are required when wearing ear protection warning sounds shouts alarms etc cannot be heard properly Take breaks in due time in order to prevent tiredness and exhaustion risk of accidents Keep easily combustible materials away from hot exhaust gases and hot mufflers risk of fire Mufflers with catalytic converters can become especially hot English Your power tool produces toxic exhaust fumes as soon as the engine is running These gases may be colorless and odorless and may contain unburnt hydrocarbons and benzene Never run the engine indoors or in poorly ventilated areas even if your model is equipped with a catalytic converter Ensure proper ventilation when working in trenches hollows or other confined areas Toxic fumes can kill If you feel sick if you have a headache vision problems e g your field of vision gets smaller hearing problems dizziness or inability to concentrate stop work immediately Such symptoms may be caused by an excessively high concentration of exhaust emissions risk of accident No smoking when working with or near the machine risk of fire Combustible fuel vapor may escape from the fuel system Examine the diamond abrasive chain periodically at short intervals c
25. d condition secure connection Check that the muffler is in perfect working condition Do not use the machine if the muffler is damaged or missing risk of fire Hearing damage Never touch a hot muffler risk of burns The condition of the antivibration elements influences vibration behavior inspect antivibration elements periodically Switch off the engine to check the chain tension to retension the chain to change chains for remedying malfunctions GS 461 Sample applications Use diamond abrasive chain only with water Connect concrete cutter to water supply network min 1 5 bar The water introduced is used to cool the diamond abrasive chain and rinse the cutting attachment and for binding dust After finishing work run the concrete cutter for a few seconds with water and at operating speed to rinse the cutting attachment If the water pressure or water volume is too low this leads to significantly increased wear and irreparable damage to the cutting attachment danger of breakage Objects to be cut Must be fully supported Must be secured so it cannot roll or slip off Must be prevented from vibrating Severed parts With openings recesses etc the sequence of the cuts is important Always make the last cut so that the diamond abrasive chain does not become jammed and so that the operator is not endangered by the severed or separated part
26. deteriorate check the sharpness of the diamond abrasive chain resharpen as needed To do this briefly cut through abrasive material e g sandstone aerated concrete or asphalt When working above ground level Always use a lift bucket Never use the machine while standing on a ladder Never use the machine in unsteady locations Never cut above shoulder height Never use the machine with one hand Begin cutting with the concrete cutter at full throttle At the end of the cut the concrete cutter is no longer supported by the cutting attachment in the cut The machine s weight must be borne by the user risk of loss of control Keep water and sludge away from electric cables risk of electric shocks Vibrations Prolonged use of the power tool may result in vibration induced circulation problems in the hands whitefinger disease No general recommendation can be given for the length of usage because it depends on several factors English The period of usage is prolonged by Hand protection wearing warm gloves Work breaks The period of usage is shortened by Any personal tendency to suffer from poor circulation symptoms frequently cold fingers tingling sensations Low outside temperatures The force with which the handles are held a tight grip restricts circulation Continual and regular users should monitor closely the condition of their hands
27. e The concrete cutter is now ready for use At very low temperatures Let the engine warm up briefly with the throttle slightly open GS 461 Switch off the engine e Set master control lever to STOP or 0 If the engine does not start The Master Control lever was not returned to its warm start position in time when the engine turned over for the first time and has now flooded Remove the spark plug see Spark plug e Dry the spark plug e Set master control lever to STOP or 0 Crank the engine several times with the starter to clear the combustion chamber Reinstall the spark plug see Spark plug e Set the Master Control lever to warm start even if the engine is cold e Restart the engine Wet filter e Dry wet filter if necessary do not expose to extreme heat e Ifthe filter is very dirty clean the filter thoroughly see Cleaning the air filter English Operating Instructions During the break in period A factory new machine should not be run at high revs full throttle off load for the first three tank fillings This avoids unnecessarily high loads during the break in period As all moving parts have to bed in during the break in period the frictional resistances in the shortblock are greater during this period The engine develops its maximum power after about 5 to 15 tank fillings During work A caution Always work with water caution Do no
28. el Lweq to ISO 11201 115 dB A Vibration level apy eq to ISO 19432 Handle Handle left right GS 461 4 5 m s 4 0 m s 33 English Special Accessories Check gauges STIHL grease STIHL filling system for fuel prevents spillage or overfilling during filling Guide bar straightener Ask your STIHL servicing dealer for current information about this and other special accessories 34 Maintenance and Repairs Users of this machine may only carry out the maintenance and service work described in this user manual All other repairs must be carried out by a servicing dealer STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer STIHL dealers are regularly given the opportunity to attend training courses and are supplied with the necessary technical information When repairing the machine only use replacement parts which have been approved by STIHL for this power tool or are technically identical Only use high quality replacement parts in order to avoid the risk of accidents and damage to the machine STIHL recommends the use of original STIHL replacement parts Original STIHL parts can be identified by the STIHL part number the STIHL logo and the STIHL parts symbol amp the symbol may appear alone on small parts Disposal Observe all country specific waste disposal rules and regulations z x N S lt
29. hain must be suitable for the material to be cut It must be in good condition and fitted correctly direction of running Correctly tensioned diamond abrasive chain GS 461 The throttle trigger and throttle trigger lockout must move easily throttle trigger must return automatically to the idle position when released Master control lever can be moved to STOP or 0 Check that the spark plug boot is secure A loose boot can lead to flying sparks which may ignite the escaping fuel air mixture risk of fire Never attempt to modify the controls or safety devices Keep the handles dry and clean free from oil and dirt important for safe control of the concrete cutter The concrete cutter should only be used if it is in full working order risk of accident Starting the engine Move at least 3 meters away from the place at which the machine was refueled and never start the machine in enclosed spaces The machine may only be used on level ground Ensure a firm and secure footing and hold the machine firmly The diamond abrasive chain must not touch any objects or the ground and must not be in the cut because it may begin to rotate when the machine is started The machine is operated by only one person There should not be any other person within the working area not even when starting the machine Do not drop start the engine start as described in the Instruction Manual GS 461
30. he diamond abrasive chain Do not use the diamond abrasive chain for lateral grinding or scrubbing Do not use the starting throttle position for cutting Engine speed cannot be controlled with the throttle trigger in this position GS 461 Examine the workplace Avoid all danger due to damaged piping or electrical wiring The machine must not be used near inflammable substances or gases Never use the machine to cut inside pipes metal troughs or other containers unless you are absolutely sure that they do not contain any volatile or inflammable substances Never leave the machine unattended with the engine running Switch off the engine before leaving the machine e g for a break Work calmly and methodically only with good lighting and visibility Do not endanger others stay alert at all times 2411BA003 KN Make certain that all parts of your body are well clear of the extended range of travel of the diamond abrasive chain Only pull concrete cutter out of the object being cut with the diamond abrasive chain running Only use concrete cutter for cutting not for prying or shoveling away objects Always decide the cutting direction before positioning the concrete cutter After that do not change the cutting direction Avoid knocks and bumps with English the machine while in the cut do not drop the machine into the cut danger of breakage If cutting performance begins to
31. heck that they are not cracked chipped check also that there are no damaged or missing segments signs of overheating discoloration Never use diamond abrasive chains that are cracked or have chipped segments Visit your servicing dealer In the event of noticeable changes in cutting behavior e g increased vibration reduced cutting performance stop work and eliminate the causes of the changes Switch off the engine and wait until the diamond abrasive chain is stationary Check condition and correct tension of diamond abrasive chain Ensure that the cutting blades are sharp Never touch the diamond abrasive chain when the motor is running If the diamond abrasive chain becomes jammed by an object switch off the engine immediately before attempting to remove the object risk of injury To change the diamond abrasive chain switch off the engine risk of injury If the machine is subjected to unusually high loads for which it was not designed e g heavy impact or a fall always check that it is in good condition before continuing work refer also to the section Before starting Check the fuel system for leaks and make sure the safety devices are working properly Never continue using a power tool that is not in perfect working order Consult a servicing dealer if in doubt Check for correct idling so that the diamond abrasive chain stops moving when the throttle trigger is released Check
32. ine avoid reinforcement especially in the reinforcement especially in the direction of the severing cut direction of the severing cut Make the plunge cut very carefully A DANGER Feed with full cutting depth along the cutting line for small Manual cutting along this line requires corrections of direction do not tilt particular caution and precision the diamond abrasive chain but always position it anew instead if necessary use wedges and if necessary leave small ridges that hold the part that is to be separated in position Break these ridges later z x o Ss S lt a x a Cut into pipes round bodies etc in the area at the ends of the cutting line so that the material does not break away Make the plunge cut very carefully at the apex and cut outward on both sides feed with full cutting depth along the cutting line for small corrections of direction do not tilt the diamond abrasive chain but 10 GS 461 Cutting Attachment STIHL is the only manufacturer who manufactures concrete cutters guide bars diamond abrasive chains and chain sprockets itself Diamond abrasive chain guide bar and chain sprocket make up the cutting attachment The cutting attachment that is supplied has been optimized for the concrete cutter The pitch t of the diamond abrasive chain 1 chain sprocket and sprocket nose of the Rollomatic guide bar must match The drive link gauge 2
33. ing of the sprocket nose corrosion protection Do not spray engine unit Long term storage See Storing the machine 20 Air Filter System When dry STIHL filters attain a long service life e Always use STIHL filters dry Fouled air filters will impair engine performance increase fuel consumption and make the machine more difficult to start Remove air filter 2411BA030 KN Turn screw plug above the rear handle in the direction of the arrow and remove filter cover screw plug is secured in the filter cover z g 5 So lt ao x N e Detach the air filter Do not remove and clean the auxiliary filter GS 461 Cleaning the Air Filter Ifthere is a noticeable loss of engine power e Dry wet air filter if necessary do not expose to extreme heat e Ifthe air filter is very dirty clean the filter thoroughly Thorough filter cleaning e Wash the air filter in STIHL special purpose cleaner special accessory or a clean non flammable cleaning liquid e g warm soapy water rinse the air filter from inside to out under a water flow do not use high pressure washers e Dry the air filter do not expose to extreme heat do not dry with compressed air e Donot oil the air filter e Reinstall air filter Always replace a damaged air filter GS 461 Adjusting the Carburetor Basic information The carburetor comes from the factory with a standard setting The carb
34. ly reduce the effectiveness of the catalytic converter Gasoline with an alcohol component exceeding 10 can cause impaired engine performance in engines with manually adjustable carburetors and thus should not be used in these engines Engines with M Tronic deliver full engine performance using gasoline with an alcohol component of up to 25 E25 Engine oil Use only high quality two stroke engine oil ideally STIHL HP HP Super or HP Ultra two stroke engine oil as they are specially engineered for STIHL engines HP Ultra ensures maximum performance and engine life The engine oils are not available in all markets Only STIHL two cycle engine oil 1 50 may be used to produce the fuel mixture for machines with a catalytic converter Mixing ratio for STIHL two cycle engine oil 1 50 1 50 1 part oil 50 parts gasoline Examples Quantity of STIHL two cycle engine gasoline oil 1 50 Liters Liters ml 1 0 02 20 5 0 10 100 10 0 20 200 15 0 30 300 20 0 40 400 25 0 50 500 Pour oil into an approved safety fuel canister first then add gasoline and mix thoroughly Storing fuel mixture Store in approved safety fuel canisters only in a dry cool and secure place protected against light and sunlight Fuel mixture ages mix only as much as needed for a few weeks Do not store fuel mixture for longer than three months The fuel mixture can become unusable faster if exposed to light su
35. nlight or low or high temperatures Shake the canister containing the fuel mixture thoroughly before refueling Awarnine Pressure can build up inside the canister open carefully The fuel tank and the canister in which fuel mixture is stored should be cleaned thoroughly from time to time GS 461 English Residual fuel and the liquid used for Refuel cleaning must be disposed of in accordance with regulations and without harming the environment Fueling Take care not to spill fuel while fueling and do not overfill the tank STIHL me recommends use of the STIHL filling system for fuel special accessory Preparing the machine Closing the filler cap e Before fueling clean the filler cap and the area around it so that dirt cannot fall into the tank e Always position the machine so that the filler cap is facing upwards warnine Never use a tool to open the bayonet filler cap This could damage the cap e Fit the cap and turn it until it and cause fuel to leak out engages in the bayonet catch z Z 5 lt a a Press the cap down as far as possible with your hand and turn it clockwise approx 1 8 of a turn until it engages properly Opening the twist lock z n 5 lt ao x a e Press the filler cap down as far as possible by hand then turn it counterclockwise approx 1 8 turn and remove GS 461 15 English Changing the fuel pickup body every year
36. of the diamond abrasive chain 1 must be matched to the groove width of the guide bar 3 When pairing components that are not compatible with each other the cutting attachment may become damaged beyond repair after only a short period of operation GS 461 Diamond abrasive chain The correct use of the STIHL diamond abrasive chain ensures economical use and avoids accelerated wear The STIHL diamond abrasive chain is suitable for cutting the following materials Concrete Reinforced concrete General blocks Masonry Stone pipes Abrasive stone e g asphalt and bricks sandstone Hard stone granite ductile cast iron pipes Restrictions on power and service life are possible Do not cut any other materials risk of accident Chain scabbard The product contents includes a chain scabbard that is suitable for the bar and chain English Mount guide bar and diamond abrasive chain Removing the chain sprocket cover 2411BA011 KN Unscrew nuts 1 from the studs nuts are fastened to the chain sprocket cover so that they are secured against loss Remove chain sprocket cover 2 2411BA012 KN Turn the screw 3 to the left until the tensioner slide 4 butts against the left end of the housing slot 11 English Fit diamond abrasive chain 2411BA013 KN e Fitthe diamond abrasive chain starting at the nose ofthe guide bar z
37. ople who are fit in good physical health and in good mental condition If you have any condition that might be aggravated by strenuous work check with your doctor before operating a machine If you have a pacemaker The ignition system of your machine produces an electromagnetic field of very low intensity An effect on individual pacemaker types cannot be excluded entirely STIHL recommends that you consult your doctor and the manufacturer of your pacemaker in order to avoid health hazards Anyone who has consumed alcohol medicines affecting their ability to react or drugs must not operate the machine Postpone the work if the weather is bad rain snow ice wind higher risk of accidents The machine may only be used for cutting GS 461 The machine must not be used for any other purposes risk of injury It is not suitable for cutting wood or wooden objects Asbestos dust is extremely toxic the machine must therefore never be used to cut asbestos Only use tools guide bars diamond abrasive chains or accessories that have been approved by STIHL for this machine or which are technically equivalent Contact a servicing dealer if in doubt Only use high quality tools or accessories Otherwise there may be a risk of accidents or damage to the machine STIHL recommends the use of genuine STIHL guide bars diamond abrasive chains chain sprockets and accessories These have been optimized for the produc
38. or loop of the rewind spring engages GS 461 Fit the pawls 6 in the rope rotor Place the washer 5 on the starter post Press the spring clip 4 on to the starter post and over the pegs of the pawls with a screwdriver or suitable rope guide bushing If it tips sideways increase the spring tension by another turn It must be possible to turn the rope rotor another half turn when the rope has been drawn out completely If not the spring has been tensioned too tightly and may break Remove one turn of the rope from the rotor Install the fan housing Set master control lever to STOP or 0 and press the remaining rope into the handle until the nipple is flush with the handle English 2411BA039 KN Undo the screws and remove the spring housing Carefully pry out the broken pieces of spring with a screwdriver Apply a few drops of non resinous oil to the new replacement spring pliers note position of spring clip Replacing broken rewind spring Tension the rewind spring Remove the rope rotor see section Replacing torn starter rope A warnine The broken pieces of spring may still be under tension and can spring apart unexpectedly on removal risk of injury Wear a face shield and protective z g y A lt a Co a Position the replacement spring with frame in the fan housing the anchor loop arrow must be located z x se So lt a x a glove
39. rrect carburetor adjustment or inadequate cleaning of cooling air inlets intake ports cylinder fins Corrosion and other consequential damage resulting from improper storage Damage to the machine resulting from the use of poor quality replacement parts Parts Subject to Wear and Tear Some parts of the power tool are subject to normal wear and tear even during regular operation in accordance with instructions and depending on the type and duration of use have to be replaced in good time Among other parts this includes Diamond abrasive chain guide bar Drive components clutch clutch drum chain sprocket Filters air fuel Rewind starter Spark plug Components of antivibration system English 31 English Main Parts Twist lock Spark plug boot Carburetor adjusting screws Water connection shut off cock Chain sprocket cover Chain sprocket Chain tensioner Guide bar 9 Diamond abrasive chain 10 Muffler 11 Front hand guard 12 Front handle handlebar 13 Decompression valve 14 Starter grip 15 Fuel filler cap 16 Master Control lever 17 Throttle trigger 18 Throttle trigger lockout 19 Rear handle 20 Rear hand guard Serial number ONoOahwWHND See O O u O 32 GS 461 Specifications Engine STIHL single cylinder two stroke engine Displacement 76 5 cm Bore 52 mm Stroke 36 mm
40. s ga over the retaining lug in the fan Make a loop in the unwound starter housing rope and use it to turn the rope rotor e Apply suitable tools screwdriver NE full revolutions in the direction of punch etc to the recesses and e arrow push the spring into its seat in the fan housing the spring slides out of Hold the rope rotor tight pull out the frame holder the twisted rope and untangle it Release the rope rotor Remove spring housing reinstall the rope rotor tension the rewind spring replace the fan housing and screw it into place Slowly let go of the rope so that it winds on to the rotor The starter grip must be drawn firmly into the GS 461 25 English Storing the Machine If the machine is to remain out of use for approx 3 months or more 26 Drain and clean the fuel tank in a well ventilated place Dispose of fuel in accordance with the regulations and having regard for the environment Run the engine until the carburetor is dry this helps to prevent the carburetor diaphragms sticking together Remove clean and dry diamond abrasive chain and guide bar and spray with STIHL multispray in particular the bearing of the sprocket nose corrosion protection Thoroughly clean the machine pay special attention to the cylinder fins and air filter Store machine in a safe and dry place Protect against unauthorized use e g by children Taking Care of the Guide Bar
41. s have them replaced by a specialist dealer x Cooling air intake slits clean x GS 461 29 English The following information applies under normal operating conditions The specified intervals must be shortened accordingly when working for longer than normal or under difficult cutting conditions 5 v extensive dust etc E 2 x 6 x 3 5 2 ES z Ko Ho sE gt 2 3 g 5 2 S gt 2 gt o gt 5 a 3 Gi g i I8 s d S o a 3 a a oo 3 3 E gt Cylinder fins clean x x Check idle adjustment chain must not rotate x x Carburetor Set the idle speed x adjust electrode gap x Spark plug replace after 100 hours operation All a screws nuts and bolts not adjusting retighten x screws 1 Spark arresting screen present only in some check x countries clean or replace if necessary x decarbonise after 139 hours of operation subse Exhaust bore f x quently after every 150 hours of operation Safety information labels replace x 1 STIHL recommends STIHL servicing dealers 2 3 During initial use tighten the cylinder block screws after 10 to 20 hours of operation If diamond abrasive chain is mounted or changed 30 GS 461 Minimize Wear and Avoid Damage Observing the instructions in this manual helps reduce the risk of unnecessary wear and damage to the power tool The power
42. sag a maximum of a 15 mm e Retension diamond abrasive chain if necessary see Tensioning the diamond abrasive chain If the diamond abrasive chain sags too much this leads to significantly increased wear of the cutting attachment A new diamond abrasive chain must be retensioned more frequently than one that has been in use already for an extended period Check chain tension frequently see Operating Instructions 13 English Fuel The engine requires a mixture of gasoline and engine oil warnine Avoid direct skin contact with and breathing in of gasoline fumes STIHL MotoMix STIHL recommends using STIHL MotoMix This pre blended fuel is free of benzene and lead stands out because of a high octane rating and always provides the proper mixing ratio STIHL MotoMix is blended with STIHL HP Ultra two stroke engine oil for maximum engine life MotoMix is not available in all markets Mixing fuel amp votice Unsuitable fuels or a mixing ratio that deviates from the specification can lead to severe engine damage The engine seals fuel lines and fuel tank may be damaged if poor quality gasoline or engine oil is used Gasoline Use only high quality gasoline with an octane rating of at least 90 ROC leaded or unleaded 14 Unleaded gasoline must be used in machines equipped with a catalytic converter amp vonce Using multiple tankfuls of leaded gasoline can substantial
43. t and the user s requirements Never modify the machine in any way as this could be extremely dangerous STIHL excludes all liability for personal injury and damage to property caused while using unauthorized attachments Do not use high pressure cleaners to clean the machine The hard water jet can damage parts of the machine Clothing and equipment Wear proper protective clothing and equipment English Clothing must be sturdy and snug fitting but allow complete freedom of movement Wear snug fitting clothing an over all not a loose fitting jacket Do not wear clothing that could become trapped in moving parts of the machine no scarves no neckties no jewelry Long hair must be tied up and covered K Wear safety boots with steel toe caps and non slip soles Wear a hard hat wher ever there is any risk of falling objects Wear gog gles to protect the eyes ep YY against flying objects Wear personal hearing protection e g ear defenders A face mask alone is not sufficient to protect the eyes Dust e g crystalline material from the object being cut fumes and smoke may be produced while cutting health hazard Always wear a dust mask if dust is generated If fumes or smoke are anticipated e g when cutting composite materials wear respiratory protection Wear sturdy gloves English STIHL can supply a comprehensive range of protective clothing
44. t be observed to reduce the risk of per sonal injury It is important that you carefully read the entire Instruction Manual before using the machine for the first time and keep it in a safe place for future ref erence Non compliance with the Instruction Man ual may cause serious or even fatal injury O00Gbb Observe the national safety regulations issued e g by the employers liability insurance association social security institutions occupational safety and health authorities or other organizations If you have never used a power tool before Ask the salesperson or another expert to explain how to use it safely or attend a training course Minors should never be allowed to use the machine except for young trainees over the age of 16 when working under supervision Children animals and bystanders must remain at a distance GS 461 When not using the machine it must be laid down in such a way that it does not endanger anyone Ensure that the machine cannot be used without authorization The user is responsible for accidents or risks involving third parties or their property The machine should only be provided or loaned to people familiar with this model and its operation The Instruction Manual should always be handed over with the machine Use of machines that emit noise may be restricted in terms of time by national and or on site local regulations The machine may only be operated by pe
45. t make the mixture leaner to achieve an apparent increase in power this could damage the engine see Adjusting the Carburetor Check chain tension frequently The diamond abrasive chain stretches and begins to sag The drive links on the underside of the bar must not come out of the bar groove by more than 15 mm the diamond abrasive chain may otherwise jump off the bar retension the diamond abrasive chain see Tensioning the diamond abrasive chain 19 English Ifthe diamond abrasive chain sags too much this leads to significantly increased wear of the diamond abrasive chain and chain sprocket retension the diamond abrasive chain see Tensioning the diamond abrasive chain A new diamond abrasive chain must be retensioned more frequently than one that has been in use already for an extended period After a long period of full throttle operation After a long period of full throttle operation allow engine to run for a while at idle speed so that the heat in the engine can be dissipated by flow of cooling air This protects engine mounted components ignition carburetor from thermal overload After finishing work Short term storage Wait for engine to cool down Keep the machine with a full tank of fuel in a dry place well away from sources of ignition until you need it again Clean and dry guide bar and diamond abrasive chain and spray with STIHL multispray in particular the bear
46. uretor has been adjusted for optimum performance and fuel efficiency in all operating states The adjusting screws on this carburetor can only be set within narrow limits The ignition module limits the maximum speed It is therefore not possible to increase the maximum speed by further turning the high speed screw H in the clockwise direction making the mix leaner amp vonice If you make the setting too lean it will increase the risk of engine damage through lack of lubrication and overheating Standard setting Switch off the engine Check the air filter clean or replace it if necessary Check the spark arresting screen in the muffler present only in some countries clean or replace it if necessary English 2 S lt a oO x mn e Turn the high speed screw H counterclockwise as far as possible max 3 4 turn e Turn the low speed screw L clockwise as far as possible then back off 1 4 turn Setting the idle speed Before starting open the shut off valve completely and ensure a supply of water to the diamond abrasive chain do not allow diamond abrasive chain to run dry Engine stops when idling or diamond abrasive chain rotates at idle speed x a t lt a Q x x m e Check standard setting e Turn the idle speed adjusting screw LA clockwise until the diamond abrasive chain begins to run then turn it back 1 1 2 turns 21 English
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