Stihl 201 Tcm Manual
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MS 201 TC-M English 19 Disengaging the Chain Brake NPull the hand guard towards the front handle until there is an audible click – the chain brake is disengaged. NOTICE Always disengage chain brake before accelerating the engine (except when checking its operation) and before starting cutting work. High revs with the chain brake engaged (chain locked) will quickly damage the powerhead and chain drive (clutch, chain brake). The chain brake is also activated by the inertia of the front hand guard if the kickback force of the saw is high enough: The hand guard is accelerated toward the bar nose. The chain brake will operate only if the hand guard has not been modified in any way. Checking Operation of the Chain Brake Before starting work: Run engine at idle speed, engage the chain brake (push hand guard towards bar nose) and open the throttle wide for no more than 3 seconds – the chain must not rotate. The hand guard must be free from dirt and move freely. Chain Brake Maintenance The chain brake is subject to normal wear. It is necessary to have it serviced and maintained regularly by trained personnel. STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer. Maintain the following servicing intervals: At temperatures below +10 °C NRemove chain sprocket cover – see "Mounting the bar and chain" NSet shutter to "winter operation" r In the "winter operation" setting, heated air is drawn in from around the cylinder and mixed with cold air. This prevents air filter and carburetor icing. At temperatures above +20 °C NAlways return the shutter to the position for "summer operation" s NOTICE Risk of engine malfunction – overheating! 0012BA033 KN )XOOWLPH XVaJH HYHU\ 3 PRQWKV 3aUWWLPH XVaJH HYHU\ 6 PRQWKV :LQWHU 2SHUaWLRQ 0011BA006 KN
MS 201 TC-M English 20 Positions of Master Control Lever STOP or † – Master Control lever must be pushed in direction of STOP or † to switch off ignition. The Master Control lever springs back to the run positionF when it is released. WARNING The ignition is switched on again automatically after the engine stops. Engine can be started by operating the rewind starter. Run positionF – a hot engine is started in this position or the engine runs in this position. Start position} – a cold engine is started in this position. Setting the Master Control Lever To move the Master Control lever from the run positionF to start}, depress the trigger lockout and the throttle trigger and hold them in that position – set the Master Control lever to start} and let go of the throttle trigger and trigger lockout. Release the Master Control lever – it then returns automatically to the start position}. The Master Control lever moves from the start position (}) to the run position (F) when you press down the throttle trigger lockout and squeeze the throttle trigger at the same time. To switch off the engine, move the Master Control lever in the direction of STOP o r † – when released, the Master Control lever springs back to the run positionF.Holding the Saw NPlace your saw on the ground. Make sure you have a firm footing – check that the chain is not touching any object or the ground. NHold the saw firmly with your right hand on the top handle. NRest your right knee on the carburetor box cover.Starting / Stopping the Engine 0012BA036 KN 217BA007 KN
MS 201 TC-M English 21 Cranking NPull the starter grip slowly with your left hand until you feel it engage – and then give it a brisk strong pull and push down the front handle at the same time. Do not pull out the starter rope to full length – it might otherwise break. Do not let the starter grip snap back. Guide it slowly back into the housing so that the starter rope can rewind properly. Machines without additional manual fuel pump: If the engine is new or after a long out-of-service period, it may be necessary to pull the starter rope several times to prime the fuel system.Starting the saw WARNING Bystanders must be well clear of the general work area of the saw. NPush the hand guard (1) forward – the chain is locked. The Master Control lever (4) is in the normal run positionF. NIf the engine is cold: Press down the trigger lockout (2) and pull the throttle trigger (3) at the same time. Hold both levers in that position and set the Master Control lever (4) to start symbol }. NHold your saw firmly.NPull the starter grip quickly and firmly as often as necessary until the engine starts. NIf the engine does not start: Move the Master Control lever (4) to start position} and repeat starting procedure. As soon as the engine runs NIf the engine was started in the start position}: Press down trigger lockout (1) and the pull the throttle trigger (2) at the same time – the Master Control lever (3) moves to the run positionF and the engine settles down to idling speed. 0012BA008 KN 0012BA037 KN 2 3 41 1 0012BA038 KN 2 3
MS 201 TC-M English 22 NPull the hand guard back towards the front handle. The chain brake is now disengaged – your saw is ready for operation. NOTICE Always disengage chain brake before accelerating the engine. High revs with the chain brake engaged (chain locked) will quickly damage the clutch and chain brake. At very low outside temperatures NChange over to winter operation if necessary – see “Winter Operation”. Stopping the Engine NMove the Master Control lever in the direction of STOP or † – when released, the Master Control lever springs back to the normal run positionF. If engine does not start NCheck that all settings are correct. NCheck that there is fuel in the tank and refuel if necessary.NCheck that the spark plug boot is properly connected. NRepeat the starting procedure. or: It is possible that the fuel-air mixture in the combustion chamber is over-rich and has flooded the engine. NRemove the spark plug – see "Spark Plug". NDry the spark plug. NHold the saw on the ground. NPush the Master Control lever as far as stop in direction of STOP or † and hold it there. WARNING An ignition spark may occur if the Master Control lever is not held against STOP or †. NOperate the rewind starter several times. NRelease the Master Control lever – it springs back to the run positionF. NInstall the spark plug – see "Spark Plug". NHold and start your saw as described. 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 NOTICE Open the throttle only when the chain brake is off. Running the engine at high revs with the chain brake engaged (chain locked) will quickly damage the engine and chain drive (clutch, chain brake). Check chain tension frequently A new saw chain must be retensioned more frequently than one that has been in use already for an extended period. Chain cold Tension is correct when the chain fits snugly against the underside of the bar but can still be pulled along the bar by hand. Retension if necessary – see "Tensioning the Saw Chain". 0012BA033 KN 2SHUaWLQJ ,QVWUXFWLRQV
MS 201 TC-M English 23 Chain at operating temperature The chain stretches and begins to sag. The drive links must not come out of the bar groove on the underside of the bar – the chain may otherwise jump off the bar. Retension the chain – see "Tensioning the Saw Chain". NOTICE The chain contracts as it cools down. If it is not slackened off, it can damage the crankshaft and bearings. 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 NSlacken off the chain if you have retensioned it at operating temperature during work. NOTICE Always slacken off the chain again after finishing work. The chain contracts as it cools down. If it is not slackened off, it can damage the crankshaft and bearings.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. Long-term storage See "Storing the machine"Varying cutting lengths, types of wood and work techniques require varying amounts of oil. The oil flow can be adjusted as needed using the adjusting screw (1) on the top of the machine. Ematic position (E), medium oil flow – NTurn adjusting screw to "E" (Ematic position) To increase oil flow – Nturn the adjusting screw clockwise To reduce oil flow – Nturn the adjusting screw counterclockwiseNOTICE The chain must always be coated with oil. Oil Quantity Control 1 0011BA034 KN
MS 201 TC-M English 24 NFlip the bar – after each sharpening and each time the chain is changed – to avoid uneven wear, especially at the sprocket nose and on the bottom NPeriodically clean the oil inlet hole (1), oil outlet channel (2) and bar groove (3) NMeasure groove depth – using the measuring tool on the file gauge (special accessory) – in the area with the greatest wearIf the groove is not at least this deep: NReplace guide bar Otherwise the drive links will grind against the base of the groove – the bottoms of the cutters and the tie straps will not lie against the bar.If there is a noticeable loss of engine power: NTurn the twist lock 90° counterclockwise. NRemove the shroud upwards. NRemove the air filter upwards. NWash the filter in STIHL special cleaner (special accessory) or a clean, non-flammable solution (e.g. warm soapy water) and then dry. NOTICE Do not clean a fleece filter (option) with a brush. Always replace a damaged filter. Taking Care of the Guide Bar Chain type Chain pitch Minimum groove depth Picco 1/4“ P 4.0 mm Rapid 1/4“ 4.0 mm 2 3 1 143BA026 KN 3LFFR
MS 201 TC-M English 25 Basic information M-Tronic regulates the fuel quantity and ignition timing for all operating states electronically. M-Tronic stands for easy, fast starting, constant optimum engine performance, outstanding acceleration and automatic adaptation to changes in operating conditions. Manual carburetor adjustments are no longer required – the carburetor does not have any adjusting screws. Automatic adjustment Under extremely changed operating conditions, attainment of the optimal setting can be accelerated as follows: NCarry out five uniform cuts to length under full loadNIf the engine is down on power, difficult to start or runs poorly at idle speed, first check the spark plug. NFit a new spark plug after about 100 operating hours – or sooner if the electrodes are badly eroded. Install only suppressed spark plugs of the type approved by STIHL – see "Specifications". Removing the Spark Plug NMove the Master Control lever to the stop position (0). NDisengage the chain brake.NRotate the captive nut (1) counterclockwise until it hangs loosely in the sprocket cover. NRemove the sprocket cover (2) with captive nut. NPull off the spark plug boot. NUnscrew the spark plug. M-TronicSpark Plug 0012BA033 KN 1 0011BA002 KN 2 0011BA020 KN
MS 201 TC-M English 26 Checking the Spark Plug NClean dirty spark plug. NCheck electrode gap (A) and readjust if necessary – see "Specifications". NRectify the problems which have caused fouling of the spark plug. Possible causes are: –Too much oil in fuel mix. –Dirty air filter. –Unfavorable running conditions. WARNING Arcing may occur if the adapter nut (1) is loose or missing. Working in an easily combustible or explosive atmosphere may cause a fire or an explosion. This can result result in serious injuries or damage to property.NUse resistor type spark plugs with a properly tightened adapter nut. Installing the spark plug NInstall the spark plug and connect the spark plug boot (press it down firmly) – reassembly all other parts in the reverse sequence.For periods of 3 months or longer NDrain and clean the fuel tank in a well ventilated area. NDispose of fuel properly in accordance with local environmental requirements. NRun the engine until the carburetor is dry – this helps prevent the carburetor diaphragms sticking together. NRemove the saw chain and guide bar, clean them and spray with corrosion inhibiting oil. NThoroughly clean the machine – pay special attention to the cylinder fins and air filter. NIf you use a biological chain and bar lubricant, e.g. STIHL BioPlus, completely fill the chain oil tank. NStore the machine in a dry, high or locked location, out of the reach of children and other unauthorized persons. 000BA039 KNA 1 000BA045 KN 6WRULQJWKH0DFKLQH
MS 201 TC-M English 27 NRemove chain sprocket cover, saw chain and guide bar NRelease chain brake – pull hand guard against the front handle Fitting a new chain sprocket –after use of two saw chains or earlier –if the wear marks (arrows) are deeper than 0.5 mm – otherwise the service life of the saw chain is reduced – use check gauge (special accessory) to test Using two saw chains in alternation helps preserve the chain sprocket. For the removal and installation of chain sprocket and clutch described in the following, a locking strip is required to immobilize the piston in the cylinder. The locking strip is included with the replacement chain sprocket. STIHL recommends use of original STIHL chain sprockets in order to ensure optimal functioning of the chain brake. Removal NPull off the spark plug boot NUnscrew spark plug (1) NTurn the clutch until the piston is in the lower part of the cylinder NInsert the locking strip (2) through the opening as far as it will go into the cylinderNFasten the locking strip (2) on the cylinder fin NTurn the clutch clockwise until the piston rests against the locking strip NLoosen the hexagon of the clutch clockwise (left-handed thread) NUnscrew clutch NRemove chain sprocket (3) and needle cage (4) from the crankshaft NClean crankshaft stub and needle cage and lubricate with STIHL lubricant (special accessory)Checking and Replacing the Chain Sprocket 001BA120 KN 1 0011BA031 KN 2 0011BA037 KN 2 0011BA032 KN 144BA017 LÄ 144BA018 LÄ
MS 201 TC-M English 28 Assembly NFit needle cage and chain sprocket on the crankshaft NScrew the clutch counterclockwise onto the crankshaft NTighten the clutch with a torque of 25 Nm NRemove the locking strip from the cylinder, screw in and tighten the spark plug NPush the spark plug boot onto the spark plugSawing effortlessly with a properly sharpened saw chain A properly sharpened saw chain cuts through wood effortlessly even with very little pushing. Never use a dull or damaged saw chain – this leads to increased physical strain, increased vibration load, unsatisfactory cutting results and increased wear. NClean the saw chain NCheck the saw chain for cracks and damaged rivets NReplace damaged or worn chain components and adapt these parts to the remaining parts in terms of shape and level of wear – rework accordingly Carbide-tipped (Duro) saw chains are especially wear-resistant. For an optimal sharpening result, STIHL recommends STIHL servicing dealers. WARNING Compliance with the angles and dimensions listed below is absolutely necessary. An improperly sharpened saw chain – especially depth gauges that are too low – can lead to increased kickback tendency of the chain saw – risk of injury! Chain pitch The chain pitch marking (a) is embossed in the area of the depth gauge of each cutter. The diameter of file to be used depends on the chain pitch – see table "Sharpening tools". The angles of the cutter must be maintained during resharpening.Maintaining and Sharpening the Saw Chain Marking (a) Chain pitch Inches mm 7 1/4 P 6.35 1 or 1/4 1/4 6.35 6, P or PM 3/8 P 9.32 2 or 325 0.325 8.25 3 or 3/8 3/8 9.32 4 or 404 0.404 10.26 689BA027 KN a