STIHL GS 461 Instruction Manual
English © ANDREAS STIHL AG & Co. KG, 2020 0458-761-0121-A. VB0.J20. 0000006258_017_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 The user is responsible for accidents or risks involving third parties or their property. Asbestos dust is extremely toxic - the machine must therefore never be used to cut asbestos! Do not lend or rent your power tool without the User Manual. Be sure that anyone using it understands the information contained in this manual. Only use tools, guide bars, diamond abrasive chains or accessories which have been approved by STIHL for this machine or which are technically equivalent.
English Wear sturdy protective gloves made of a resistant material (e. g. leather). STIHL can supply a comprehensive range of personal protective equipment. Transporting the machine Always stop the engine and attach the chain scabbard. Carry the machine only by the handlebar – guide bar towards the rear – with the hot muffler facing away from the body. To avoid serious burn injuries, avoid touching hot parts of the machine, especially the surface of the muffler.
English – The diamond abrasive chain must be suitable for the material to be cut. It must be in good condition and fitted correctly (direction of running) The machine is operated by a single person only – do not allow any person to stay within the working area – nor with starting. In the event of impending danger or in an emergency, switch off the engine immediately by moving the master control lever to STOPor0.
English To reduce the risk of serious or fatal injury from breathing toxic fumes, ensure proper ventilation when working in trenches, hollows or other confined locations. This reduces the risk of serious or fatal injury from breathing toxic fumes. Never touch the diamond abrasive chain when the motor is running.
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, guide bar and chain sprocket make up the cutting attachment. – Concrete – Reinforced concrete The cutting attachment that is supplied has been optimized for the concrete cutter. – General blocks – Masonry – Stone pipes – Abrasive stone*, e. g.
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 Your engine requires a mixture of gasoline and engine oil. WARNING For health reasons, avoid direct skin contact with gasoline and avoid inhaling gasoline vapor. STIHL MotoMix STIHL recommends the use of STIHL MotoMix. This ready-to-use fuel mix contains no benzol or lead, has a high octane rating and ensures that you always use the right mix ratio. STIHL MotoMix uses STIHL HP Ultra two-stroke engine oil for an extra long engine life. MotoMix is not available in all markets.
English Filling Up with Fuel Fueling Take care not to spill fuel while fueling and do not overfill the tank. STIHL recommends you use the STIHL filler nozzle for fuel (special accessory). N Position the machine so that the tank cap faces up. 1. 2. WARNING Never use a tool to open the bayonettype fuel cap. This may damage the cap and cause fuel leakage. N Place the cap on the tank opening and turn it until it slips into position. Open the cap.
English 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. Connect concrete cutter to water supply network Changing to warm start n is only possible from the cold start l position. 2411BA025 KN When the throttle trigger is squeezed, the Master Control lever returns from warm start n to run F.
English Between the knees or thighs Place the concrete cutter securely on the ground – assume a steady stance- the diamond abrasive chain must not touch any objects or the ground N Press the concrete cutter firmly against the ground, holding the front handle with your left hand, thumb wrapped round the handle N Place your right foot into the rear handle N N Clamp the rear handle between the knees or thighs Grip the handlebar firmly with the left hand – thumb wrapped around the handlebar 2411BA022 KN
English When the engine has turned over for the first time Decompression valve STOP 2411BA023 KN STOP 2411BA026 KN Press the button, the decompression valve will be opened 1 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.
English Switch off the engine N Set master control lever to STOP or 0 If the engine does not start Operating Instructions During the break-in period N Remove the spark plug - see "Spark plug" 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. This avoids unnecessarily high loads during the break-in period.
English Air Filter System Remove Air Filter Cleaning the Air Filter If there is a noticeable loss of engine power: When dry, STIHL filters attain a long service life. N Always use STIHL filters dry 2411BA030 KN Fouled air filters will impair engine performance, increase fuel consumption and make the machine more difficult to start.
English Engine stops while idling or chain runs while engine is idling Adjusting the Carburetor N 3443BA001 KN General Information The carburetor comes from the factory with a standard setting. This setting provides an optimum fuel-air mixture under most operating conditions. N With this carburetor it is only possible to correct the adjusting screws within fine limits. Turn high speed screw (H) counterclockwise as far as stop (no more than 3/4 turn).
English N Warm up the engine. N Turn high speed screw (H) slightly clockwise (leaner) – no further than stop. NOTICE Spark Plug N N After returning from high altitude, reset the carburetor to the standard setting. If the setting is too lean there is a risk of engine damage due to insufficient lubrication and overheating. Fit a new spark plug after about 100 operating hours – or sooner if the electrodes are badly eroded.
English 1 000BA045 KN If the machine is to remain out of use for approx.
English N Flip the guide bar, if necessary remove the bore of the guide bar with guide bar straightener Checking and Replacing the Chain Sprocket N 3 2 Remove chain sprocket cover, diamond abrasive chain and guide bar 1 2411BA041 KN Check guide bar for uneven wear (ridge offset) 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 Installing the clutch drum N Clean crankshaft stub and needle cage and lubricate with STIHL lubricant (special accessory) Maintain and Sharpen Diamond Abrasive Chain Maintaining the diamond abrasive chain N Slip the needle cage onto the crankshaft stub.
English Complete machine Visual inspection (condition, leaks) X Clean Fuel pickup body in fuel tank X check X 1) Have repaired by a specialist dealer X check X replace X 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 X X clean and spray with STIHL Multispray check (wear, damage, action of sprocket nose) X X clean and spray with S
Anti-vibration elements check X Clean X X X X Adjust idle speed Adjust electrode gap X X Replace after 100 operating hours All accessible screws, nuts and bolts (not adjusting Tighten screws) 2) Safety information label replace 1) STIHL recommends STIHL servicing dealer 2) During initial use, tighten the cylinder block screws after 10 to 20 hours of operation 3) When diamond abrasive chain is mounted or changed GS 461 As required X Clean Check idle adjustment – chain must not rotate If
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
English Guide bar Rollomatic G Specifications Cutting lengths (3/8" pitch) 30, 40 cm Groove width: 1.6 mm Engine STIHL single cylinder two-stroke engine Displacement: Cylinder bore: Piston stroke: Engine power according to ISO 7293: Idling speed: Cut-off speed: cm3 76.5 52 mm 36 mm 4.3 kW (5.8 HP) at 9800 rpm 2500 rpm 13500 rpm Ignition system Electronic magneto ignition Spark plug (suppressed): Electrode gap: Bosch WSR 6 F, NGK BPMR 7 A 0.
English 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.
English Done at Waiblingen, 03.02.2020 ANDREAS STIHL AG & Co. KG pp Dr.
0458-761-0121-A englisch G www.stihl.
