Stihl MS 261 C-M Instruction Manual
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Stihl MS 261 C-M Instruction Manual

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STIHL MS 261 C-M
2 - 43
Instruction Manual

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  • Page 1 STIHL MS 261 C-M 2 - 43 Instruction Manual...

  • Page 2: Table Of Contents

    Mounting the Bar and Chain (quick chain Guide to Using this Manual tensioner)..........17 Tensioning the Saw Chain (side chain ten‐ This Instruction Manual refers to a STIHL chain sioner)............19 saw, also called a machine in this Instruction Tensioning the Saw Chain (quick chain ten‐...

  • Page 3: Safety Precautions

    To reduce the risk of accidents or injury, put off Engineering improvements the work in poor weather conditions (rain, snow, STIHL's philosophy is to continually improve all ice, wind). of its products. For this reason we may modify Persons with pacemakers only: The ignition sys‐...
  • Page 4 (e.g. leather). match your model and meet your performance requirements. Refuelling STIHL can supply a comprehensive range of per‐ sonal protective equipment. Gasoline is an extremely flammable fuel – keep clear of naked flames and Transporting fire –...
  • Page 5 2 Safety Precautions English Before Starting Work 2.10 During operation Check that your saw is properly assembled and Ensure you always have a firm and safe footing. in good condition – refer to appropriate chapters Take special care when the bark is wet – danger in the instruction manual.
  • Page 6 Have the machine 2.14 Maintenance and repairs repaired by a STIHL servicing dealer if the saw chain still continues to move during idling. Always switch off the engine before any repair, The chain saw produces poisonous...

  • Page 7: Reactive Forces

    – 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 "Speci‐ fications". Check ignition lead (insulation in good condition, secure connection).

  • Page 8: Working Techniques

    English 4 Working Techniques Quickstop chain brake: Pushback (B) This device reduces the risk of injury in certain situations – it cannot prevent kickback. When activated, the chain brake stops the saw chain within a fraction of a second – see the section "Saw chain"...
  • Page 9 4 Working Techniques English Sawing that you ask the responsible forestry office about the current fire hazard. Do not operate your saw with the starting throttle lock engaged. Engine speed cannot be control‐ led with the throttle trigger in this position. Work calmly and carefully –...
  • Page 10 English 4 Working Techniques Make sure no-one is endangered by the falling tree – the noise of your engine may drown any warning calls. Maintain a distance of at least 2 1/2 tree lengths from the next felling site. Determining direction of fall and escape path Select gap in stand into which you want the tree to fall.
  • Page 11 4 Working Techniques English – When felling, stand only to the side of the fall‐ Determine direction of fall with gunning sight on ing trunk and only move back laterally onto the cover and fan housing escape path – Plan escape paths on slopes parallel to the slope –...
  • Page 12 English 4 Working Techniques Sapwood cuts – With rotten trunks, leave a wider strip Plunge cutting – For relieving cuts during shortening – For wood carving Sapwood cuts in long-fibered softwood help pre‐ vent sapwood splintering when the tree falls. Make cuts at both sides of the trunk at same ►...
  • Page 13 ► Engage the spiked bumper behind the hinge logue to felling cut (E)). and use this as the rotation point – reposition Contact the STIHL dealer for the selection of the the chainsaw as little as possible felling wedge (suitable length, width and height).
  • Page 14 English 4 Working Techniques – Do not cut into the stabilizing strap – Cut horizontally – Do not cut into the holding strap. The felling cut must be continued on the oppo‐ site side of the trunk. Ensure that the second cut is at the same level as the first cut.

  • Page 15: Cutting Attachment

    5 Cutting Attachment English Chain Scabbard – Do not cut into the hinge ► Make the felling cut up to the holding strap (6) – Do not cut into the holding strap. Your saw comes standard with a chain scabbard that matches the cutting attachment.

  • Page 16: Mounting The Bar And Chain (Side Chain Ten- Sioner)

    English 6 Mounting the Bar and Chain (side chain tensioner) Mounting the Bar and Fitting the chain Chain (side chain ten‐ sioner) Removing the chain sprocket cover WARNING Wear work gloves to protect your hands from the sharp cutters. ► Fit the chain – start at the bar nose. ►...

  • Page 17: Mounting The Bar And Chain (Quick Chain Tensioner)

    7 Mounting the Bar and Chain (quick chain tensioner) English Mounting the Bar and Chain (quick chain ten‐ sioner) Removing the chain sprocket cover ► Position the tensioning gear (1) against the guide bar (3) so that the stud (4) projects through the upper hole and the short guide peg (5) locates in the lower hole.
  • Page 18 English 7 Mounting the Bar and Chain (quick chain tensioner) Fitting the saw chain ► Guide the drive link into the bar groove (see arrow) and turn the tensioning gear to the left as far as possible ► Fit the chain sprocket cover so that the wing‐ WARNING nut locates on the collar screw (3).

  • Page 19: Tensioning The Saw Chain (Side Chain Tensioner)

    11.1 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.

  • Page 20: Fueling

    Unsuitable fuels or lubricants or mix ratios other unusable. than those specified may result in serious dam‐ STIHL MotoMix may be stored for up to 2 years age to the engine. Poor quality gasoline or without any problems. engine oil may damage the engine, sealing rings, ►...
  • Page 21 Opening 12.3 Filling Up with Fuel Take care not to spill fuel while fueling and do not overfill the tank. STIHL recommends you use the STIHL filler noz‐ zle for fuel (special accessory). ► Fill the fuel tank. 12.4 Closing ►...

  • Page 22: Chain Lubricant

    Bottom of cap is twisted in relation to top. Biological chain oil must be resistant to aging ► Remove the cap from the fuel tank and check (e.g. STIHL BioPlus), since it will otherwise it from above. quickly turn to resin. This results in hard deposits that are difficult to remove, especially in the area of the chain drive and chain.

  • Page 23: Filling Chain Oil Tank

    ► Refill the chain oil tank every time you refuel. Take care not to spill chain oil while refilling and do not overfill the tank. STIHL recommends you use the STIHL filler noz‐ zle for chain oil (special accessory). ► Close the filler cap.

  • Page 24: Winter Operation

    ► Return the shutter to the summer position s . necessary to have it serviced and maintained regularly by trained personnel. STIHL recom‐ mends that maintenance and repair work be car‐ ried out only by authorised STIHL dealers. The following intervals must be complied with: Full-time use: quarterly...

  • Page 25: Electric Handle Heating

    18 Electric Handle Heating English 18.1 Switching on handle heating NOTICE (depending on model) This is important to reduce the risk of engine run‐ ning problems and overheating. 17.2 At temperatures below -10°C It is advisable to fit the "cover plate" kit (special accessory) if you use your saw in extremely cold conditions (temperatures below -10°C, in powder or drifting snow).
  • Page 26 English 19 Starting / Stopping the Engine 19.2 Adjust Master Control lever ► Hold the front handle firmly with your left hand – your thumb should be under the handle. To move the Master Control lever from the run 19.4 Actuating position F to start }, depress the trigger lockout and the throttle trigger and hold them in that...
  • Page 27 19 Starting / Stopping the Engine English WARNING Bystanders must be well clear of the general work area of the saw. ► Pull the hand guard back towards the front handle. The chain brake is now disengaged – your saw is ready for operation.

  • Page 28: Operating Instructions

    English 20 Operating Instructions There is possibly a non-combustible fuel-air mix‐ underside of the bar – the chain may otherwise ture in the combustion chamber of the engine jump off the bar. Retension the chain – see "Ten‐ that is too rich– the engine has flooded. sioning the Saw Chain".

  • Page 29: Taking Care Of The Guide Bar

    22 Taking Care of the Guide Bar English 23 Shroud Use the adjusting screw (1) (on underside of machine) to vary the oil feed rate as required. 23.1 Removing the Shroud Ematic position (E), medium oil flow rate – ► To switch off the engine, move the Master ►...

  • Page 30: Cleaning The Air Filter

    - such as powdery or drifting snow. Less suita‐ ble for very dusty conditions. STIHL filters have a long service life in dry oper‐ ating conditions. ► Always use STIHL filters in dry state.

  • Page 31: Spark Plug

    3.0: “Speeding up automatic adaptation of the chain saw”. If the throttle trigger is released before the chain ► If the STIHL M‑Tronic version is 3.0 or higher: saw has been fully calibrated, calibration will be “Calibrating the chain saw”.

  • Page 32: Storing The Machine

    English 28 Storing the Machine ► Pull off the spark plug boot. WARNING ► Clean away loose dirt from around the spark plug. 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.

  • Page 33: Checking And Replacing The Chain Sprocket

    29 Checking and Replacing the Chain Sprocket English ► If you use a biological chain and bar lubricant, e.g. STIHL BioPlus, completely fill the chain oil tank. ► Store the machine in a dry, high or locked location, out of the reach of children and other unauthorized persons.

  • Page 34: Maintaining And Sharpening The Saw Chain

    A Sharpening angle Carbide-tipped (Duro) saw chains are especially wear-resistant. For an optimal sharpening result, STIHL saw chains are sharpened with a 30° STIHL recommends STIHL servicing dealers. sharpening angle. Ripping chains, which are sharpened with a 10° sharpening angle, are WARNING exceptions.
  • Page 35 ► Rotate the file a little periodically in order to avoid uneven wear ► To remove file burr, use a piece of hardwood STIHL filing gauge (special accessory, see table ► Check angle with file gauge "Sharpening tools") – a universal tool for check‐...
  • Page 36 English 30 Maintaining and Sharpening the Saw Chain 30.7 Depth gauge setting mark) is lowered at the same time as the depth gauge of the cutter. WARNING The rest of the humped drive link must not be filed; otherwise, this could increase the tendency of the chain saw to kick back.

  • Page 37: Maintenance And Care

    31 Maintenance and Care English ► Lay the file gauge on the saw chain – the high‐ est point of the depth gauge must be flush with the file gauge ► After sharpening, clean the saw chain thor‐ oughly, removing any filings or grinding dust – lubricate the saw chain thoroughly ►...
  • Page 38 English 31 Maintenance and Care The following information applies in normal operat‐ ing conditions. The specified intervals must be shortened accordingly when working for longer than normal or under difficult cutting conditions (extensive dust, highly resinous lumber, lumber from tropical trees, etc.). If you only use the tool occasionally, extend the intervals accordingly.

  • Page 39: Minimize Wear And Avoid Damage

    Safety information label replace 1)STIHL recommends STIHL dealers2)Firmly tighten down the cylinder base screws of chainsaws (3.4 kW or more) after 10 to 20 hours of operation. 32 Minimize Wear and Avoid which the user is responsible. These include,...

  • Page 40: Main Parts

    MS 261 C-M: 4.9 kg 14 Adjusting wheel (quick chain adjuster) MS 261 C-M with quick chain adjuster: 5.1 kg 15 Handle of wingnut (quick chain adjuster) MS 261 C-M with handle and carbu‐ 5.0 kg...

  • Page 41: Ordering Spare Parts

    Exhaust Emissions 34.6.5 Duromatic guide bars The CO value measured in the EU type approval Bar lengths (pitch .325"): 37, 40, 45 cm procedure is specified at www.stihl.com/co2. Groove width: 1.6 mm The measured CO value was determined on a 34.6.6 Saw chains .325"...

  • Page 42: Disposal

    ANDREAS STIHL AG & Co. KG Produktzulassung The year of manufacture and serial number are STIHL products must not be thrown in the gar‐ applied to the product. bage can. Take the product, accessories and packaging to an approved disposal site for envi‐...
  • Page 43 38 EC Declaration of Conformity English 0458-153-0121-C...
  • Page 44 *04581530121C* 0458-153-0121-C...

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