Stihl MS 241 C-M Instruction Manual
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Stihl MS 241 C-M Instruction Manual

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STIHL MS 241 C-M
2 - 42
Instruction Manual

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  • Page 1 STIHL MS 241 C-M 2 - 42 Instruction Manual...

  • Page 2: Table Of Contents

    Mounting the Bar and Chain (side chain ten‐ Guide to Using this Manual sioner)............15 Mounting the Bar and Chain (quick chain This Instruction Manual refers to a STIHL chain tensioner)..........16 saw, also called a machine in this Instruction Tensioning the Saw Chain (side chain ten‐...

  • Page 3: Safety Precautions

    Engineering improvements the work in poor weather conditions (rain, snow, ice, wind). STIHL's philosophy is to continually improve all of its products. For this reason we may modify Persons with pacemakers only: The ignition sys‐ the design, engineering and appearance of our tem of your chain saw produces an electromag‐...
  • Page 4 (e.g. leather). match your model and meet your performance requirements. Refuelling STIHL can supply a comprehensive range of per‐ Gasoline is an extremely flammable sonal protective equipment. fuel – keep clear of naked flames and fire – do not spill any fuel – no smok‐...
  • Page 5 2 Safety Precautions English cap, hose connections and the manual fuel pump (on machines so equipped). If there are any leaks or damage, do not start the engine – risk of fire. Have your saw repaired by a serv‐ icing dealer before using it again. –...
  • Page 6 (e.g. tingling correct when possible. Have the machine sensation in fingers), seek medical advice. repaired by a STIHL servicing dealer if the saw chain still continues to move during idling. 2.14 Maintenance and repairs...

  • 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 (Quick Chain Tensioner)

    English 7 Mounting the Bar and Chain (quick chain tensioner) ► Turn the screw (1) counterclockwise until the ► Turn the tensioning screw (4) clockwise until tensioner slide (2) butts against the left end of there is very little chain sag on the underside the housing slot.
  • Page 17 7 Mounting the Bar and Chain (quick chain tensioner) English Fitting the saw chain ► Remove screw (2) ► Position tensioning gear (1) and guide bar (3) relative to one another ► Insert and tighten screw (2) WARNING Releasing the chain brake Put on protective gloves –...

  • Page 18: Tensioning The Saw Chain (Side Chain Tensioner)

    English 8 Tensioning the Saw Chain (side chain tensioner) Tensioning the Saw Chain (side chain tensioner) Retensioning during cutting work: ► Switch off the engine. ► Loosen the nut. ► Hold the bar nose up. ► Use a screwdriver to turn the tensioning screw (1) clockwise until the chain fits snugly against the underside of the bar.

  • Page 19: Checking Chain Tension

    11.2.2 Engine Oil than one that has been in use for some time. If you mix the fuel yourself, use only STIHL two- ► Check chain tension frequently – see chapter stroke engine oil or another high-performance on "Operating Instructions".

  • Page 20: Fueling

    30 days. Exposure to light, the sun, low or high temperatures can quickly make the fuel mix unusable. STIHL MotoMix may be stored for up to 2 years without any problems. ► Thoroughly shake the mixture in the canister before fueling your machine.
  • Page 21 English 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

    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. There must still be a small amount of oil in the oil tank when the fuel tank is empty.

  • Page 23: Checking Chain Lubrication

    Press the hand guard towards the nose of the ried out only by authorised STIHL dealers. The guide bar with the left hand - or automatically following intervals must be complied with:...

  • Page 24: Winter Operation

    English 17 Winter Operation Part-time use: every six months kit" (special accessory). The mounting kit keeps occasional use: annually out powdered or drifting snow. ► If the chain saw is extremely cold (frost forma‐ 17 Winter Operation tion) – after starting, bring the engine up to operating temperature at medium speed (dis‐...

  • Page 25: Starting / Stopping The Engine

    19 Starting / Stopping the Engine English 19 Starting / Stopping the The Master Control lever moves from the start Engine position (}) to the run position (F) when you press down the throttle trigger lockout and 19.1 Positions of Master Control squeeze the throttle trigger at the same time.
  • Page 26 English 19 Starting / Stopping the Engine 19.3.2 Between knees or thighs ► Pull the starter grip slowly with your right hand until you feel it engage – and then give it a brisk strong pull and push down the front han‐ dle at the same time.
  • Page 27 19 Starting / Stopping the Engine English 19.5 Starting the Saw 19.5.3 All models WARNING Bystanders must be well clear of the general work area of the saw. 19.5.1 Versions with manual fuel pump ► Press the manual fuel pump bulb at least five times –...

  • Page 28: Operating Instructions

    English 20 Operating Instructions ► If the engine was started in the start posi‐ ► Check that the spark plug boot is properly con‐ tion }: Press down trigger lockout and the nected. ► Repeat the starting procedure. pull the throttle trigger (3) at the same time – the Master Control lever (4) moves to the run position (F) and the engine settles down to It is possible that the fuel-air mixture in the com‐...

  • Page 29: Oil Quantity Control

    21 Oil Quantity Control English pulled along the bar by hand. Retension if neces‐ sary – see "Tensioning the Saw Chain". 20.2.3 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 –...

  • Page 30: Shroud

    ► Always replace damaged filters. 24.1.2 Cleaning the Air Filter ► Knock out the filter. ► Spray outside of filter with STIHL special cleaner or soapy water. ► Rinse outside of filter under warm running water. NOTICE ► Open the twist locks (1) by turning them 1/4 –...

  • Page 31: Tronic

    ► Fit 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 "Specifica‐ tions". 26.1 Removing the spark plug ►...

  • Page 32: Storing The Machine

    ► Thoroughly clean the machine – pay special attention to the cylinder fins and air filter. ► 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 33: Maintaining And Sharpening The Saw Chain

    Carbide-tipped (Duro) saw chains are especially wear-resistant. For an optimal sharpening result, STIHL recommends STIHL servicing dealers. A Sharpening angle STIHL saw chains are sharpened with a 30° sharpening angle. Ripping chains, which are sharpened with a 10° sharpening angle, are 0458-738-0121-C...
  • Page 34 ► To remove file burr, use a piece of hardwood ► Check angle with file gauge STIHL filing gauge (special accessory, see table All cutters must be equally long. "Sharpening tools") – a universal tool for check‐...
  • Page 35 29 Maintaining and Sharpening the Saw Chain English ► Lay the appropriate file gauge (1) for the chain With varying cutter lengths, the cutter heights pitch on the saw chain and press it against the also vary and cause rough running of the saw cutter to be checked –...
  • Page 36 English 29 Maintaining and Sharpening the Saw Chain WARNING Depth gauges that are too low increase the kick‐ back tendency of the chain saw. ► Lay the file gauge on the saw chain – the high‐ est point of the depth gauge must be flush with the file gauge ►...

  • Page 37: Maintenance And Care

    30 Maintenance and Care English 30 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.).

  • Page 38: 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. 31 Minimize Wear and Avoid – Consequential damages due to continued use...

  • Page 39: Main Parts

    26 Rear handle 27 Rear hand guard 2, 3 # Serial number 33 Specifications 33.1 Engine STIHL single cylinder two-stroke engine Displacement: 42.6 cc Bore: 42.5 mm Stroke: 30 mm Engine power to ISO 7293: 2.3 kW (3.1 bhp) at...

  • Page 40: Ordering Spare Parts

    The K‑factor in accordance with Directive MS 241 C-M: 4.5 kg 2006/42/EC is 2.0 dB(A) for the sound pressure MS 241 C-M VW with handle and car‐ 4.8 kg buretor heating: level and sound power level; the K‑factor in MS 241 C-BEM with ErgoStart and 4.9 kg...

  • Page 41: Maintenance And Repairs

    Technical documents deposited at: ANDREAS STIHL AG & Co. KG Produktzulassung (Product Licensing) STIHL products must not be thrown in the gar‐ bage can. Take the product, accessories and The year of manufacture and serial number are packaging to an approved disposal site for envi‐...
  • Page 42 English 37 EC Declaration of Conformity Dr. Jürgen Hoffmann Head of Product Data, Regulations and Licens‐ 0458-738-0121-C...
  • Page 43 37 EC Declaration of Conformity English 0458-738-0121-C...
  • Page 44 *04587380121C* 0458-738-0121-C...

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