Stihl MS 151 C Instruction Manual
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Stihl MS 151 C Instruction Manual

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MS 151 C
2 - 39
Instruction Manual

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  • Page 1 MS 151 C 2 - 39 Instruction Manual...

  • Page 2: Table Of Contents

    Mounting the Bar and Chain..... 16 Guide to Using this Manual Tensioning the Saw Chain (side chain ten‐ sioner)............17 This Instruction Manual refers to a STIHL chain Checking Chain Tension......17 saw, also called a machine in this Instruction Fuel............17 Manual.

  • 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). accessories. They are specifically designed to match your model and meet your performance requirements. STIHL can supply a comprehensive range of per‐ sonal protective equipment. Refuelling Transporting Gasoline is an extremely flammable fuel –...
  • Page 5 2 Safety Precautions English Look out for leaks! Never start the Do not drop-start the engine – start as described engine if fuel has been spilled or is in the Instruction Manual. leaking – Fatal burns may result! 2.10 During operation Before Starting Work Ensure you always have a firm and safe footing.
  • Page 6 If correct when possible. Have the machine any of the above symptoms appear (e.g. tingling repaired by a STIHL servicing dealer if the saw sensation in fingers), seek medical advice. chain still continues to move during idling.

  • 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 – – when the chain at the nose of the guide bar is When working on resistant wood, STIHL recom‐ pinched in the cut. mends retrofitting with a spiked bumper so that the motor saw can be positioned safely.

  • Page 9: Working Techniques

    – Never use the machine with just one hand Begin cutting with the chainsaw at full throttle. For work other than arboriculture, STIHL recom‐ mends retrofitting with a spiked bumper so that Position the saw so that your body is clear of the the chainsaw can be positioned safely.
  • Page 10 English 4 Working Techniques – never allow another person to hold the log or Ripping: help in any other way. Limbing – use a low kickback chain. – Work with the saw supported wherever possi‐ ble. – do not stand on the log while limbing it. –...
  • Page 11 4 Working Techniques English Felling notch Preparing the felling notch A Direction of fall B Escape path (escape routes) The felling notch (C) determines the direction of – Establish escape paths for each worker – fall. approx. 45° diagonally opposite to the direc‐ tion of fall Important: –...
  • Page 12 English 4 Working Techniques Sapwood cuts Making the felling notch Sapwood cuts in long-fibered softwood help pre‐ When making a felling notch, align the chainsaw vent sapwood splintering when the tree falls. so that the notch lies at a right angle to the direc‐ Make cuts at both sides of the trunk at same tion of fall.
  • Page 13 Select suitable felling wedges dependent on the trunk diameter and the width of the kerf (ana‐ logue to felling cut (E)). Contact the STIHL dealer for the selection of the felling wedge (suitable length, width and height). Selecting the appropriate felling...
  • Page 14 English 4 Working Techniques ► Make the felling cut up to the stabilizing Shout a warning before starting the felling cut. strap (3) ► Plunge cut the felling cut (E) – plunge the – Do not cut into the stabilizing strap guide bar fully in ►...

  • Page 15: Cutting Attachment

    5 Cutting Attachment English ► Make the felling cut towards the holding strap saw absolutely horizontally and swivel as widely as possible – Cut horizontally ► Make the felling cut up to the hinge (5) – Do not cut into the holding strap. –...

  • Page 16: Mounting The Bar And Chain

    English 6 Mounting the Bar and Chain Chain Scabbard ► Unscrew the nut (1) and remove the chain sprocket cover (2) Mounting the Guide Bar Your saw comes standard with a chain scabbard that matches the cutting attachment. ► Turn the screw (1) to the left until the tensioner If guide bars of different lengths are mounted to slide (2) butts against the left end of the hous‐...

  • Page 17: Tensioning The Saw Chain (Side Chain Tensioner)

    Retensioning during cutting work: STIHL MotoMix uses STIHL HP Ultra two-stroke ► Shut down the engine. engine oil for optimum engine life. ► Loosen the nut.

  • Page 18: Fueling

    9.2.2 Engine oil 10 Fueling If you mix the fuel yourself, use only STIHL two- stroke engine oil or another high-performance engine oil classified as JASO FB, JASO FC, JASO FD, ISO-L-EGB, ISO-L-EGC or ISO-L- EGD.
  • Page 19 Opening 10.3 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. 10.4 Closing ►...

  • Page 20: 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 21: 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). ► Closing the Tank Cap There must still be a small amount of oil in the oil tank when the fuel tank is empty.

  • Page 22: Starting / Stopping The Engine

    15.3 Adjust Master Control lever mends that maintenance and repair work be car‐ ried out only by authorised STIHL dealers. To move the Master Control lever from the nor‐ The following intervals must be complied with: mal run position F to starting throttle n, press...
  • Page 23 15 Starting / Stopping the Engine English 15.6 Actuating The Master Control lever moves from the starting ► Pull the starter grip slowly with your right hand throttle position n to the run position F when you until you feel it engage – and then give it a press down the throttle trigger lockout and blip brisk strong pull and push down the front han‐...
  • Page 24 English 15 Starting / Stopping the Engine 15.9 As Soon As the Engine Runs Position choke shutter closed l ► Press down the trigger lockout and blip the – if engine is cold (even if the engine has stalled throttle trigger (2) – the Master Control during opening of throttle after starting) lever (1) moves to the run position F and the Choke shutter open j...

  • Page 25: Operating Instructions

    16 Operating Instructions English 15.11 Shut off the engine 16.2 During work NOTICE Do not make the mixture leaner to achieve an apparent increase in power – this could damage the engine – see "Adjusting the Carburetor". NOTICE Open the throttle only when the chain brake is off.

  • Page 26: Taking Care Of The Guide Bar

    ► Remove the air filter upwards. ► Turn the guide bar over – every time you ► Wash the filter in STIHL special cleaner (spe‐ sharpen the chain and every time you replace cial accessory) or a clean, non-flammable sol‐...

  • Page 27: Spark Plug

    ► Turn the idle speed screw (LA) clockwise until eroded. Install only suppressed spark plugs of the chain begins to run – then back it off the type approved by STIHL – see "Specifica‐ 4 turns. tions". Saw chain runs while engine is idling 20.1...

  • Page 28: Storing The Machine

    ► Clean dirty spark plug. attention to the cylinder fins and air filter ► Check electrode gap (A) and readjust if neces‐ ► When using biological chain oil (e.g. STIHL sary – see "Specifications". BioPlus), fill the lubricant oil tank ►...

  • Page 29: Maintaining And Sharpening The Saw Chain

    Carbide-tipped (Duro) saw chains are especially wear-resistant. For an optimal sharpening result, A Sharpening angle STIHL recommends STIHL servicing dealers. STIHL saw chains are sharpened with a 30° sharpening angle. Ripping chains, which are sharpened with a 10° sharpening angle, are 0458-506-0121-C...
  • Page 30 ► 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 31 23 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 32 English 23 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 33: Maintenance And Care

    Have replaced by servicing dealer STIHL recommends STIHL servicing dealer When using professional chainsaws (with a power output of 3.4 kW or more) for the first time, tighten the cylinder block screws after 10 to 20 hours of operation...

  • Page 34: Minimize Wear And Avoid Damage

    The user is responsible for all damage caused by by a servicing dealer. non-observance of the safety precautions, oper‐ STIHL recommends that you have servicing and ating and maintenance instructions in this man‐ repair work carried out exclusively by an author‐...

  • Page 35: Main Parts

    26 Main Parts English 26 Main Parts for any damage that may occur. Among other parts, this includes: – Damage to the engine due to neglect or defi‐ cient maintenance (e.g. air and fuel filters), incorrect carburetor adjustment or inadequate cleaning of cooling air inlets (intake ports, cyl‐...

  • Page 36: Specifications

    27.5 Weight 2.0 m/s for the vibration level. dry, without bar and chain 27.8 REACH MS 151 C 2.8 kg REACH is an EC regulation and stands for the 27.6 Cutting Attachment Registration, Evaluation, Authorization and Restriction of Chemical substances.

  • Page 37: Special Accessories

    – STIHL lubricating grease technical information. – STIHL filler nozzle for fuel – helps avoid spills and overfilling during refueling When repairing the machine, only use replace‐ – STIHL filler nozzle for chain oil – helps avoid...

  • Page 38: Ec Declaration Of Conformity

    Done at Waiblingen, 03.02.2020 ANDREAS STIHL AG & Co. KG ► Take STIHL products including packaging to a suitable collection point for recycling in accord‐ ance with local regulations. ► Do not dispose with domestic waste.
  • Page 39 CM14 5NQ, United Kingdom Certification No. ITS UK MCR 65 Technical documents deposited at: ANDREAS STIHL AG & Co. KG The year of manufacture and serial number are applied to the product. Waiblingen, 31.03.2022 ANDREAS STIHL AG & Co. KG Dr.
  • Page 40 *04585060121C* 0458-506-0121-C...

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