Stihl MS 170 Instruction Manual
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Stihl MS 170 Instruction Manual

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MS 170, 180
2 - 40
Instruction Manual

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Summary of Contents for Stihl MS 170

  • Page 1 MS 170, 180 2 - 40 Instruction Manual...

  • Page 2: Table Of Contents

    Guide to Using this Manual tensioner)..........16 Mounting the Bar and Chain (side chain ten‐ This Instruction Manual refers to a STIHL chain sioner)............18 saw, also called a machine in this Instruction Tensioning the Saw Chain (front 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 object, e.g. when another limb is touched acci‐ the chain pulls the saw forward – to reduce this dentally during limbing. risk, always engage the spiked bumper securely – when the chain at the nose of the guide bar is in the tree or limb.
  • Page 9 4 Working Techniques English Country-specific legislation on felling technique chain saw in the vicinity of easily combustible must be complied with during felling work. materials, dry plants or scrub. It is mandatory that you ask the responsible forestry office about Sawing the current fire hazard.
  • Page 10 English 4 Working Techniques Preparing for felling erwise the cutting attachment may stick in the cut or kick back – risk of injury! Check that there are no other persons in the fell‐ ing area – other than helpers. Make sure no-one is endangered by the falling tree –...
  • Page 11 4 Working Techniques English – Clear escape paths, eliminate obstacles Determine direction of fall with gunning sight on – Put down tools and equipment at a safe dis‐ cover and fan housing tance – but not on the escape paths –...
  • 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 – reposition logue to felling cut (E)). the chainsaw as little as possible Contact the STIHL dealer for the selection of the ► Make the felling cut up to the hinge (1) felling wedge (suitable length, width and height).
  • Page 14 English 4 Working Techniques ► Make the felling cut up to the stabilizing ► Make the felling cut towards the holding strap strap (3) – 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‐...

  • Page 15: Cutting Attachment

    5 Cutting Attachment English Chain Scabbard ► Tip of the guide bar must penetrate the wood before the holding strap (4) – guide the chain‐ saw absolutely horizontally and swivel as widely as possible ► Make the felling cut up to the hinge (5) –...

  • 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 tensioning nut (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: Mounting The Bar And Chain (Side Chain Ten- Sioner)

    English 8 Mounting the Bar and Chain (side chain tensioner) Mounting the Bar and Chain (side chain ten‐ sioner) Removing the chain sprocket cover ► Unscrew nuts and remove chain sprocket cover ► Guide the drive link into the bar groove (see arrow) and turn the tensioning gear to the left as far as possible ►...

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

    9 Tensioning the Saw Chain (front chain tensioner) English Tensioning the Saw Chain Fitting the saw chain (front chain tensioner) WARNING Retensioning during cutting work: Put on protective gloves – risk of injury by the ► Switch off the engine. sharp cutters ►...

  • Page 20: Tensioning The Saw Chain (Side Chain Tensioner)

    27% (E27). 13.2.2 Engine oil If you mix the fuel yourself, use only STIHL two- stroke engine oil or another high-performance ► Shut off the engine. engine oil classified as JASO FB, JASO FC, ►...

  • Page 21: Fueling

    WARNING tures. After fueling, tighten down the filler cap by hand STIHL MotoMix however can be stored for up to as securely as possible. 5 years without any problems. ► Shake the canister containing the fuel mixture Use a suitable tool (e.

  • Page 22: Chain Lubricant

    Take care not to spill chain oil while refilling and NOTICE do not overfill the tank. STIHL recommends you use the STIHL filler noz‐ Biological chain oil must be resistant to aging zle for chain oil (special accessory). (e.g. STIHL BioPlus), since it will otherwise ►...

  • 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: Starting / Stopping The Engine

    English 19 Starting / Stopping the Engine Part-time use: every six months Simultaneously pressing the throttle trigger lock‐ occasional use: annually out and blipping the throttle trigger causes the master control lever to jump from the warm 19 Starting / Stopping the start n position to run F.
  • Page 25 19 Starting / Stopping the Engine English 19.4 Starting ► With the left hand on handlebar, press the chain saw firmly against the ground – thumb 19.4.1 Standard versions wrapped around the handlebar ► Place your right foot into the rear handle 19.3.2 Between the knees or thighs ►...
  • Page 26 English 19 Starting / Stopping the Engine 19.5 Starting the chain saw 19.6 When the engine has turned over for the first time WARNING There must not be anyone within the swivel STOP range of the chain saw. ► Observe safety precautions 19.5.1 For all versions ►...

  • Page 27: Operating Instructions

    20 Operating Instructions English 20.2 During work NOTICE NOTICE Open the throttle only when the chain brake is off. Increased engine speeds with the chain Do not make the mixture leaner to achieve an brake on (saw chain is stationary) will quickly apparent increase in power –...

  • Page 28: Taking Care Of The Guide Bar

    Chain pitch Minimum groove depth Picco 1/4" P 4.0 mm Rapid 1/4“ 4.0 mm MS 170 2-MIX, 180 2-MIX Picco 3/8" P 5.0 mm Rapid 3/8“; 0.325“ 6.0 mm Rapid 0.404“ 7.0 mm If groove depth is less than specified: ►...

  • Page 29: Adjusting The Carburetor

    – or sooner if the electrodes are badly replace the filter eroded. Install only suppressed spark plugs of ► Reinstall air filter the type approved by STIHL – see "Specifica‐ tions". 24 Adjusting the Carburetor 25.1 Removing the spark plug 24.1...

  • Page 30: Storing The Machine

    ► Thoroughly clean the machine - pay special attention to the cylinder fins and air filter ► When using biological chain oil (e.g. STIHL BioPlus), fill the lubricant oil tank ► Store the machine in a dry and secure location...

  • Page 31: Maintaining And Sharpening The Saw Chain

    For an optimal sharpening result, 28.3 Sharpening and side plate STIHL recommends STIHL servicing dealers. angles A Sharpening angle STIHL saw chains are sharpened with a 30° sharpening angle. Ripping chains, which are sharpened with a 10° sharpening angle, are 0458-206-0121-C...
  • Page 32 ► 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 33 28 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 34 English 28 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 35: 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 36: 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 37: Main Parts

    24 Rear handle 25 Rear hand guard # Machine number 32 Specifications 32.1 Engine STIHL single cylinder two-stroke engine 32.1.1 MS 170, MS 170 C Displacement: 30.1 cm Cylinder bore: 37 mm Piston stroke: 28 mm Engine power according 1.3 kW (1.8 HP) at...
  • Page 38 Bar and chain MS 180, MS 170, MS 180: Bosch WSR 6 F, NGK BPMR 7 A MS 180 C MS 170 2-MIX, MS 180 2- MIX: NGK CMR6H The actual cutting length can be less than the Electrode gap: 0.5 mm...

  • Page 39: Ordering Spare Parts

    Registration, Evaluation, Authorisation and When repairing the machine, only use replace‐ Restriction of Chemical substances. ment parts which have been approved by STIHL for this power tool or are technically identical. For information on compliance with the REACH Only use high-quality replacement parts in order regulation (EC) No.

  • Page 40: Ec Declaration Of Conformity

    DPLF Deutsche Prüf- und Zertifizierungsstelle für Land- und Forsttechnik (NB 0363) Spremberger Straße 1 D‑64823 Groß-Umstadt STIHL products must not be thrown in the gar‐ bage can. Take the product, accessories and Certification No.: all MS 170: K-EG-2009/3408 packaging to an approved disposal site for envi‐...
  • Page 41 36 EC Declaration of Conformity English 0458-206-0121-C...
  • Page 42 English 36 EC Declaration of Conformity 0458-206-0121-C...
  • Page 43 36 EC Declaration of Conformity English 0458-206-0121-C...
  • Page 44 *04582060121C* 0458-206-0121-C...

This manual is also suitable for:

Ms 180

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