STIHL MS 170, 180 Instruction Manual
English © ANDREAS STIHL AG & Co. KG, 2020 0458-206-0121-B. VB5.J20. 0000006734_012_GB Printed on chlorine-free paper Printing inks contain vegetable oils, paper can be recycled.
English Intake air baffle: winter operation Guide to Using this Manual This Instruction Manual refers to a STIHL chain saw, also called a machine in this Instruction Manual. Intake air baffle: summer operation Pictograms Handle heating Pictograms that appear on the machine are explained in this Instruction Manual.
English Safety Precautions Special safety precautions must be observed to reduce the risk of personal injury when working with a chain saw because of the very high chain speed and very sharp cutters. It is important that you read the instruction manual before first use and keep it in a safe place for future reference. Nonobservance of the instruction manual may result in serious or even fatal injury. General Observe all applicable local safety regulations, standards and ordinances.
English Wear sturdy protective gloves made of a resistant material (e.g. leather). Clean the dust and dirt off the machine – do not use any grease solvents for this purpose. Open the fuel filler cap carefully so that any excess pressure is relieved gradually and fuel does not splash out. Clean the ventilation slots if necessary. The machine may only be refuelled in a well ventilated place. Clean the machine immediately if fuel is spilled.
English – Check operation of chain brake, front hand guard – Correctly mounted guide bar – Correctly tensioned chain – The trigger and trigger lockout must move freely and spring back to the idle position when they are released. – – Master Control lever must move easily to STOP, 0 or † Check that the spark plug boot is secure – a loose boot may cause arcing that could ignite combustible fumes and cause a fire. – Never attempt to modify the controls or safety devices in any way.
English Examine the saw chain periodically at short intervals and as soon as you note any tangible changes: a machine that is not in perfect working order. In case of doubt, have the unit checked by your servicing dealer. – Switch off the engine; wait until the saw chain is stationary – Check condition and secure fitting – Check sharpness Check for correct idling, so that the saw chain stops moving when the throttle trigger is released. Check the idle setting regularly and correct when possible.
English Maintenance and repairs Check ignition lead (insulation in good condition, secure connection). Always switch off the engine before any repair, cleaning or maintenance work and any work on the chain. Risk of injury if the engine starts inadvertently! Check that the muffler is in perfect working condition. Exception: adjustment of carburettor and idle speed. The machine must be serviced regularly. Do not attempt any maintenance or repair work not described in the Instruction Manual.
English Kickback occurs if, for example, The most common reactive forces are: kickback, pushback and pull-in. 001BA257 KN Dangers of kickback Kickback can result in fatal cuts. – – The saw chain in the area of the upper quarter of the guide bar nose unintentionally comes into contact with wood or a solid object – e. g.
English Dead wood (brittle, rotten or dead wood) poses a significant, highly unpredictable hazard. It is extremely difficult or even practically impossible to recognise the danger. Use aids such as winches or draglines. be drawn forward toward the log – to avoid this, engage the bumper spike firmly in the wood. Pushback (B) B 001BA038 KN When felling close to roads, rail lines, power lines, etc., work with particular care. If necessary, notify police, power companies or railway authorities.
English Note when reaching the end of a cut that the saw is no longer supported in the kerf. You have to take the full weight of the machine since it might otherwise go out of control. materials, dry plants or scrub. Always contact your local forest authority for information on a possible fire risk. 001BA082 KN When cutting small logs: – Use a sturdy and stable support – sawhorse. Position the saw so that your body is clear of the cutting attachment. – Never hold the log with your leg or foot.
English Ripping cut: 1 1/ 2 21/2 001BA088 LÄ 2 001BA151 KN 1 1 Maintain a distance of at least 2 1/2 tree lengths from the next felling site. 2 N Make relieving cut at the compression side (1) Make bucking cut at the tension side (2) Be wary of pushback when making bucking cut from the bottom upwards (underbuck). NOTICE Do not cut a lying log at a point where it is touching the ground because the saw chain will otherwise be damaged.
English Preparing work area at base of tree B – – 45° A Felling notch First clear the tree base and work area from interfering limbs and brush to provide a secure footing. Preparing the felling notch Carefully clear the base of the trunk (e.g., with an axe) – sand, stones and other foreign objects will blunt the saw chain C – Establish escape paths for each worker – approx.
English Determine direction of fall with gunning sight on cover and fan housing Checking the direction of fall felling notch to a depth of about 1/10 of trunk diameter. On large diameter trees, cut to no more than width of guide bar. Your chainsaw has a gunning sight on the cover and fan housing. Use this gunning sight. Making the felling notch When making a felling notch, align the chainsaw so that the notch lies at a right angle to the direction of fall.
English The tree is felled with the felling cut (E). – Cut horizontally – 1/10 (at least 3 cm) of tree diameter higher than bottom of felling notch (C). The holding strap (F) or stabilizing strap (G) supports the tree and helps prevent it from falling prematurely. – Width of strip: approx. 1/10 to 1/5 of the trunk diameter – Do not cut into the strip during the felling cut – With rotten trunks, leave a wider strip 1.
English Felling cut with stabilizing strap (normal tree) – Do not cut into the stabilizing strap A) Thin trunks 1. Implement this felling cut when the trunk diameter is smaller than the cutting length of the chainsaw. 2. 3. 3. 5. 001BA263 KN 4. 1. 001BA273 KN 2. 001BA261 KN N Shout a warning before starting the felling cut. Set the felling wedge (3) Shout a second warning immediately before the tree falls.
English N Plunge cut the felling cut N Make the felling cut up to the hinge (4) – Do not cut into the hinge N Make the felling cut up to the stabilizing strap (5) 2. 001BA274 KN 6. N N Plunge cut the guide bar into the trunk until it exits on the other side Shout a second warning immediately before the tree falls.
English The felling cut must be continued on the opposite side of the trunk. B) Thick trunks Ensure that the second cut is at the same level as the first cut. 1. 2.
English Chain Scabbard Cutting Attachment Mounting the Bar and Chain (front chain tensioner) A cutting attachment consists of the saw chain, guide bar and chain sprocket. a – – 3 The pitch (t) of the saw chain (1), chain sprocket and the nose sprocket of the Rollomatic guide bar must match. Your saw comes standard with a chain scabbard that matches the cutting attachment.
English Disengage the chain brake. Mounting the Bar and Chain (quick chain tensioner) 001BA186 KN 2 N Pull the hand guard towards the front handle until there is an audible click – the chain brake is disengaged. 143BA003 KN Fitting the chain N 1 4 Removing the chain sprocket cover Fit the guide bar over the studs (1) – the cutting edges on the top of the bar must point to the right.
English Releasing the chain brake N Fit the saw chain – starting at the nose of the guide bar – pay attention to the position of the tensioning gear and the cutting edges N Turn tensioning gear (1) to the right as far as possible N Turn the guide bar so that the tensioning gear faces the user Remove screw (2) 1 3 N 2310BA016 KN N Pull hand guard towards the front handle until it engages audibly – chain brake is released 2 3 181BA013 KN N 001BA186 KN 2310BA015 KN 2 Fitting the saw chain P
English turn the adjusting wheel (4) a little until the chain sprocket cover can be slid completely against the engine housing N Swing grip (5) into position (until it engages) N Fit wing nut and tighten lightly N Next step: see "Tensioning the Saw Chain" Mounting the Bar and Chain (side chain tensioner) Removing the chain sprocket cover N Guide the drive link into the bar groove (see arrow) and turn the tensioning gear to the left as far as possible N Fit chain sprocket cover, sliding the guide
English Releasing the chain brake 001BA186 KN 2 4 N Pull hand guard towards the front handle until it engages audibly – chain brake is released N Position the guide bar over the bolts (1) – the cutting edges of the saw chain must point to the right N Position the locating hole (2) over the peg of the tensioner slide – simultaneously place the saw chain over the sprocket wheel (3) Retensioning during cutting work: Turn screw (4) to the right until there is very little chain sag on the underside of
English Tensioning the Saw Chain (quick chain tensioner) Tensioning the Saw Chain (side chain tensioner) Checking Chain Tension Retensioning during cutting work: Retensioning during cutting work: N Shut off the engine. N Shut off the engine. N Pull out the hinged clip and loosen the wingnut. N Loosen the nuts. Hold the bar nose up. N Turn the adjusting wheel (1) clockwise as far as stop. N N N Tighten down the wingnut (2) firmly by hand.
English Fuel Your engine requires a mixture of gasoline and engine oil. WARNING For health reasons, avoid direct skin contact with gasoline and avoid inhaling gasoline vapor. 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. STIHL MotoMix uses STIHL HP Ultra two-stroke engine oil for an extra long engine life. MotoMix is not available in all markets.
English Fuel pick-up body replacement Fueling Chain Lubricant For automatic and reliable lubrication of the chain and guide bar – use only an environmentally compatible quality chain and bar lubricant. Rapidly biodegradable STIHL BioPlus is recommended. Preparing the machine N Before fueling, clean the filler cap and the area around it so that dirt cannot fall into the tank.
English If the oil level in the tank does not go down, the reason may be a fault in the oil supply system: Check chain lubrication, clean the oilways, contact your dealer for assistance if necessary STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer. Filling Chain Oil Tank N Thoroughly clean the oil filler cap and the area around it to ensure that no dirt falls into the tank.
English The chain brake will operate only if the hand guard has not been modified in any way. Releasing the chain brake Chain Brake Check operation of the chain brake Before starting work: Run engine at idle speed, engage the chain brake (push hand guard toward 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.
English Starting / Stopping the Engine Positions of the master control lever Adjusting the master control lever Holding the chain saw To adjust the master control lever from run F to cold start l, press and hold down the throttle trigger lockout and throttle trigger simultaneously – set master control lever. There are two ways to hold the chain saw during starting.
English Between the knees or thighs Versions with ErgoStart Starting The ErgoStart stores the energy for starting the chain saw. For this reason, a few seconds may pass between the pulling of the starter rope and the starting of the engine.
English When the engine has turned over for the first time For all versions 0 0 3 207BA023 KN 1 N N Push the hand guard (1) forwards – the saw chain is blocked N Simultaneously press and hold down the throttle trigger lockout (2) and throttle trigger – set master control lever Move master control lever (3) to warm start n and continue cranking STOP 0 If engine is cold (even if the engine has stalled during opening of throttle after starting) Position warm start n – N 30 If engine is warm (
English N Move the master control lever to the stop position 0 N Remove the spark plug - see "Spark plug" N Dry the spark plug N Crank the engine several times with the starter – to clear the combustion chamber N Replace the spark plug – see "Spark plug" N Set the master control lever to warm start n – even if the engine is cold N Restart the engine Operating Instructions During the break-in period A factory new machine should not be run at high revs (full throttle off load) for the first thre
English NOTICE Taking Care of the Guide Bar 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. Picco Rapid Rapid 3/8“ P 5.0 mm 3/8“; 0.325“ 6.0 mm 0.404“ 7.0 mm If the groove is not at least this deep: N 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.
English Shroud If the filter cannot be cleaned or is damaged, replace the filter Cleaning the Air Filter N Reinstall air filter If there is a noticeable loss of engine power 207BA039 KN Removing the shroud N Use a suitable tool to open the catch by turning it 90° to the left N Lift off the shroud N Simultaneously press the throttle trigger lockout and throttle trigger and set the Master Control lever to cold start l N Clean away loose dirt from around the filter N Remove the shroud – see "
English N Adjusting the Carburetor Basic information Turn the idle speed adjusting screw (LD) slowly clockwise until the saw chain begins to rotate – then back off 1/2 turn Saw chain rotates at idle speed: The carburetor has been factoryadjusted to provide the engine with a optimal fuel-air mixture in all operating states.
English Storing the Machine 1 000BA045 KN 207BA030 KN N Pull off the spark plug boot N Unscrew spark plug For periods of 3 months or longer 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. Checking the Spark Plug A N Clean dirty spark plug. N Check electrode gap (A) and readjust if necessary – see "Specifications".
English N Remove chain sprocket cover, saw chain and guide bar. N Release chain brake – pull hand guard against the front handle 143BA042 KN Fit new chain sprocket – after use of two saw chains or earlier – if the wear marks (arrows) are deeper than 0.
English Chain pitch Sharpening and side plate angles File holder A Marking (a) 7 1 or 1/4 6, P or PM 2 or 325 3 or 3/8 4 or 404 Chain pitch Inches mm 1/4 P 6.35 1/4 6.35 3/8 P 9.32 0.325 8.25 3/8 9.32 0.404 10.26 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. A Sharpening angle STIHL saw chains are sharpened with a 30° sharpening angle.
English markings on the file holder – rest the file holder on the tooth head and the depth gauge Proper sharpening Select sharpening tools in accordance with chain pitch N File only from the inside outward N Clamp guide bar if necessary N N Block saw chain – push the hand guard forward The file only sharpens on the forward stroke – lift the file on the backstroke N To advance the saw chain, pull the hand guard toward the handlebar: The chain brake is disengaged.
English 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.
English Complete machine Visual inspection (condition, leaks) Manual fuel pump (if present) Fuel pick-up body / filter in fuel tank X Clean Function test X X X X X Have checked by dealer check X Have repaired by a specialist dealer1) X check X Clean, replace filter insert X X X Fuel tank Clean X Lubricating oil tank Clean X Chain lubrication check X Check, pay attention to sharpness X X Checking the chain tension X X X sharpen Check (wear, damage) Guide bar X X X repla
Anti-vibration elements check X Clean X Chain catcher Safety information label Check idle adjustment – saw chain must not rotate As required If damaged If faulty Annually X Clean Accessible screws and nuts (except adjusting screws) Monthly X Cylinder fins Spark plug Weekly X Have replaced by servicing dealer1) Air intake on fan housing Carburetor Whenever tank is refilled At the end of work and/or daily The following maintenance intervals apply for normal operating conditions only.
English Minimize Wear and Avoid Damage Observing the instructions in this manual helps reduce the risk of unnecessary wear and damage to the power tool. The power tool must be operated, maintained and stored with the due care and attention described in this owner's manual. servicing dealer. STIHL dealers are regularly given the opportunity to attend training courses and are supplied with the necessary technical information.
English Main Parts 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 # 12 6 13 7 4 1 2 6 3 8 5 9 10 11 7 17 16 18 19 23 20 24 14 # 22 21 MS 170, MS 170 C, MS 180, MS 180 C 25 207BA040 KN 15 Shroud catch Carburetor adjusting screw Chain brake Muffler Chain sprocket Chain sprocket cover Chain catcher Side chain tensioner Chain tensioner (frontal) Guide bar Oilomatic saw chain Adjusting wheel (quick tensioner) Handle Oil filler cap Bumper spike Front hand guard Front ha
English MS 180, MS 180 C Specifications Engine STIHL single cylinder two-stroke engine MS 170, MS 170 C Displacement: Cylinder bore: Piston stroke: Engine power according to ISO 7293: Idle speed:1) 30.1 cm3 37 mm 28 mm 1.3 kW (1.8 HP) at 8500 rpm 2800 rpm MS 170 2-MIX Displacement: Cylinder bore: Piston stroke: Engine power according to ISO 7293: Idle speed:1) 30.1 cm3 37 mm 28 mm 1.2 kW (1.
English MS 170 2-MIX: Max. chain speed to ISO 11681: Chain speed at maximum power output: 24.8 m/s 18.6 m/s MS 180 2-MIX: Max. chain speed to ISO 11681: Chain speed at maximum power output: 24.8 m/s 18.6 m/s Bar and chain MS 180, MS 180 C Sound and vibration levels The actual cutting length can be less than the specified cutting length. For further details concerning compliance with the Physical Agents Directive Vibration 2002/44/EC, see www.stihl.
English Maintenance and Repairs Please enter your saw model, serial number as well as the part numbers of the guide bar and saw chain in the spaces provided. This will make reordering simpler. Users of this machine may only carry out the maintenance and service work described in this user manual. All other repairs must be carried out by a servicing dealer. The guide bar and saw chain are subject to normal wear and tear.
English EC Declaration of Conformity ANDREAS STIHL AG & Co. KG Badstr. 115 D-71336 Waiblingen declare in exclusive responsibility that the product Serial identification number: Displacement all MS 170: all MS 180: 111 dB(A) 110 dB(A) 112 dB(A) Done at Waiblingen, 03.02.2020 ANDREAS STIHL AG & Co. KG p p.
English 48 MS 170, MS 170 C, MS 180, MS 180 C
0458-206-0121-B englisch G www.stihl.
