{ STIHL GS 461 Instruction Manual
English © ANDREAS STIHL AG & Co. KG, 2012 0458-761-0121-A. VA3.J12. 0000006258_002_GB Printed on chlorine-free paper Printing inks contain vegetable oils, paper can be recycled.
English Guide to Using this Manual NOTICE Pictograms Caution where there is a risk of damaging the machine or its individual components. Pictograms that appear on the machine are explained in this Instruction Manual. Engineering improvements Depending on the machine and equipment version, the following pictograms may appear on the machine. Fuel tank; fuel mixture of gasoline and engine oil STIHL's philosophy is to continually improve all of its products.
English 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.
English STIHL can supply a comprehensive range of protective clothing 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. 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.
English 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.
English Ensure proper ventilation when working in trenches, hollows or other confined areas. Toxic fumes can kill! 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! If you feel sick, if you have a headache, vision problems (e.g.
002BA146 KN English – 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 Examine the workplace. Avoid all danger due to damaged piping or electrical wiring.
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 and fingers. If any of the above symptoms appear (e.g.
English 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! 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.
English 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 Shaping pipe 2411BA007 KN Cutting round and hollow bodies N Secure pipes, round bodies, etc. against rolling away N Secure pipes, round bodies, etc.
English Diamond abrasive chain The correct use of the STIHL diamond abrasive chain ensures economical use and avoids accelerated wear. 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.
English N 2411BA013 KN N N N 2411BA0014 KN 4 Position the guide bar over the bolts (1) – align drive links so that the position lines up with the symbol (arrow) N 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 Moving the guide bar N Only move the guide bar if the diamond abrasive chain cannot be tensioned properly.
English For retensioning during operation: N Switch off the engine N Put on protective gloves N Loosen nuts N Raise the guide bar at the nose N 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".
English Fuel The engine requires a mixture of gasoline and engine oil. WARNING 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.
English Refuel Fueling Take care not to spill fuel while fueling and do not overfill the tank. STIHL recommends use of the STIHL filling system for fuel (special accessory). Closing the filler cap Preparing the machine N Before fueling, clean the filler cap and the area around it so that dirt cannot fall into the tank N Always position the machine so that the filler cap is facing upwards 1. 2.
English Changing the fuel pickup body every year Starting / Stopping the Engine The four positions of the Master Control lever To set the Master Control lever to warm start n, first set it to cold start l, then push the Master Control lever into the warm start n position. Changing to warm start n is only possible from the cold start l position. When the throttle trigger is squeezed, the Master Control lever returns from warm start n to run F.
English Between the knees or thighs On the ground Connect concrete cutter to water supply network (min. 1.5 bar) N Before starting, open shut-off valve (arrow) completely Hold concrete cutter There are two ways to hold the concrete cutter during starting.
English Decompression valve Starting 2411BA023 KN STOP N With the right hand, pull the starter grip slowly until you feel it engage – 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 Starting the concrete cutter Press the button, the decompression valve will be opened 1 The d
English When the engine has turned over for the first time Switch off the engine N Set master control lever to STOP or 0 STOP If the engine does not start Operating Instructions During the break-in period N Move the Master Control lever (1) to the position warm start n N Remove the spark plug - see "Spark plug" N Press the button on the decompression valve N Dry the spark plug A factory new machine should not be run at high revs (full throttle off load) for the first three tank fillings.
English 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 Air Filter System Remove air filter When dry, STIHL filters attain a long service life. N Always use STIHL filters dry Fouled air filters will impair engine performance, increase fuel consumption and make the machine more difficult to start.
English If there is a noticeable loss of engine power: N Dry wet air filter if necessary – do not expose to extreme heat N If the air filter is very dirty, clean the filter thoroughly Thorough filter cleaning N N Wash the air filter in STIHL specialpurpose cleaner (special accessory) or a clean, nonflammable cleaning liquid (e. g.
English WARNING NOTICE If the 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) 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.
English Spark Plug Remove the spark plug Lift the air baffle (1) up and off N Unplug spark plug boot (2) N Unscrew spark plug WARNING 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.
English Replacing a torn starter rope Removing the fan housing 5 7 6 6 4 1 1 3 2411BA034 KN 1 N Remove screws (1) N Push the hand guard (2) upwards N Pull the bottom of the fan housing (3) away from the crankcase and remove downwards 24 Carefully press the spring clip (4) off of the axle with a screw driver or suitable pliers N Remove washer (5) N Remove the pawls (6) N Remove the rope rotor (7) N Lever the rope out of the starter handle with a screwdriver N Remove the remainder o
English 5 4 N Fit the pawls (6) in the rope rotor N Place the washer (5) on the starter post N N It must be possible to turn the rope rotor another half-turn when the rope has been drawn out completely.
English Taking Care of the Guide Bar If the machine is to remain out of use for approx.
English Installing the clutch drum 3 2 Remove chain sprocket cover, diamond abrasive chain and guide bar 1 2411BA040 KN Replacing rim sprocket – If the diamond abrasive chain is being replaced, also replace the rim sprocket – If the wear marks (arrows) are deeper than 0.
English Maintain and sharpen diamond abrasive chain Maintaining the diamond abrasive chain After finishing work: N Remove diamond abrasive chain and guide bar N Rinse diamond abrasive chain and guide bar with water N Dry diamond abrasive chain and guide bar N 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 N Check the diamond abrasive chain for cracks and damaged rivets
English Throttle trigger, throttle trigger lockout, master conChecking operation trol lever Fuel pickup body in fuel tank X clean if faulty yearly monthly weekly X X X X X X check X replace X Fuel tank clean 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 if necessary X X Diamond abrasive chain as required visual inspection (condition, leaks) if damag
Cylinder fins Carburetor Spark plug clean Check idle adjustment – chain must not rotate X X X X Set the idle speed adjust electrode gap X X replace after 100 hours’ operation All accessible screws, nuts and bolts (not adjusting retighten screws)2) Spark arresting screen (present only in some countries) check1) clean or replace if necessary1) Exhaust bore decarbonise after 139 hours of operation, subsequently after every 150 hours of operation Safety information labels replace 1) STIHL recomme
English 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 tool must be operated, maintained and stored with the due care and attention described in this owner's manual. servicing dealer. STIHL dealers are regularly given the opportunity to attend training courses and are supplied with the necessary technical information.
English Main Parts 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 # 2 1 # 9 3 8 7 4 5 12 11 13 Twist lock Spark plug boot Carburetor adjusting screws Water connection, shut-off cock Chain sprocket cover Chain sprocket Chain tensioner Guide bar Diamond abrasive chain Muffler Front hand guard Front handle (handlebar) Decompression valve Starter grip Fuel filler cap Master Control lever Throttle trigger Throttle trigger lockout Rear handle Rear hand guard Serial number 14 15 16 17 18 19 20 3
English Rollomatic G guide bar Engine STIHL single cylinder two-stroke engine Displacement: Bore: Stroke: Engine power to ISO 7293: Idle speed: Engine cut-off speed: 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/s2 for the vibration measurement. Cutting Attachment (GS 461) Specifications 76.5 cm3 52 mm 36 mm 4.3 kW (5.
English – 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. 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.
English EC Declaration of Conformity Quality Certification ANDREAS STIHL AG & Co. KG Badstr. 115 D-71336 Waiblingen hereby confirms that Model: Make: Type: Serial identification number: Displacement: Stone cutter STIHL GS 461 4252 76.5 cm3 EN ISO 12100, EN 55012, EN 61000-6-1 The technical documentation has been retained by: ANDREAS STIHL AG & Co. KG Product approval The year of construction and the serial number are shown on the machine. Waiblingen, 03.05.2012 ANDREAS STIHL AG & Co.
English 36 GS 461
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