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Operator`s Manual

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1. dys NN E 001BA203 KN STIHL filing gauge special accessory see table Sharpening tools a universal tool for checking sharpening and side plate angles depth gauge setting and tooth length as well as cleaning grooves and oil inlet holes MS 170 MS 170 C MS 180 MS 180 C Proper sharpening Select sharpening tools in accordance with chain pitch Clamp guide bar if necessary e Block saw chain push the hand guard forward To advance the saw chain pull the hand guard toward the handlebar The chain brake is disengaged With the Quickstop Super chain brake system additionally press the throttle trigger lockout e Sharpen frequently removing little material two or three strokes of the file are usually sufficient for simple resharpening 689BA018 KN z x e o lt a o e Guide the file horizontally at a right angle to the side surface of the guide bar in accordance with the specified angle according to the English markings on the file holder rest the file holder on the tooth head and the depth gauge e File only from the inside outward The file only sharpens on the forward stroke lift the file on the backstroke e Donotfile tie straps and drive links e Rotate the file a little periodically in order to avoid uneven wear Toremove file burr use a piece of hardwood Check angle with file gauge All cutters must be equally lon
2. e Lay the appropriate file gauge 1 for the chain pitch on the saw chain and press it against the cutter to be checked if the depth gauge protrudes past the file gauge the depth gauge must be reworked 38 z x x o lt ao o e Afterwards dress the leading edge of the depth gauge parallel to the service mark see arrow when doing this be careful not to further lower the highest point of the depth gauge warnine Depth gauges that are too low increase the kickback tendency of the chain saw 689BA052 KN Lay the file gauge on the saw chain the highest point of the depth gauge must be flush with the file gauge After sharpening clean the saw chain thoroughly removing any filings or grinding dust lubricate the saw chain thoroughly e Inthe event of extended periods of disuse store saw chains in cleaned and oiled condition MS 170 MS 170 C MS 180 MS 180 C English Sharpening tools special accessories Round file mm Inches Round file Part number File holder Part number File gauge Part number Taper square file Part number Sharpening set Part number Chain pitch Inches mm 1 4P 6 35 1 4 6 35 3 8 P 9 32 0 325 8 25 3 8 9 32 0 404 10 26 3 2 4 0 4 0 4 8 5 2 5 5 1 8 5 32 5 32 3 16 13 64 7 32 5605 771 3206 5605 772 4006 5605 772 4006 5605 772 4806 5605 772 5206 5605 772 5506 5
3. Run the engine until the carburetor is dry this helps prevent the carburetor diaphragms sticking together Remove the saw chain and guide bar clean them and spray with corrosion inhibiting oil 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 MS 170 MS 170 C MS 180 MS 180 C Checking and Replacing the Chain Sprocket Remove chain sprocket cover saw chain and guide bar Release chain brake pull hand guard against the front handle Fit new chain sprocket e x e o X a e after use of two saw chains or earlier if the wear marks arrows are deeper than 0 5 mm otherwise the service life of the saw chain is reduced use check gauge special accessory to test Using two saw chains in alternation helps preserve the chain sprocket STIHL recommends use of original STIHL chain sprockets in order to ensure optimal functioning of the chain brake English z F2 e e lt em gt eo Use a screwdriver to remove the E clip Remove washer Remove the chain sprocket together with the needle cage from the crankshaft Install chain sprocket Clean crankshaft stub and needle cage and lubricate with STIH
4. Original Instruction Manual Printing inks contain vegetable oils paper can be recycled Printed on chlorine free paper ANDREAS STIHL AG amp Co KG 2015 0458 207 8321 B VA1 B15 0000006694 002 GB Contents Guide to Using this Manual 2 Safety Precautions 3 Reactive Forces 8 Working Techniques 9 Cutting Attachment 18 Mounting the Bar and Chain front chain tensioner 18 Mounting the Bar and Chain quick chain tensioner 19 Tensioning the Saw Chain front chain tensioner 21 Tensioning the Saw Chain quick chain tensioner 22 Checking Chain Tension 22 Fuel 22 Fueling 24 Chain Lubricant 24 Filling Chain Oil Tank 25 Checking Chain Lubrication 25 Chain Brake 26 Starting Stopping the Engine 27 Operating Instructions 30 Taking Care of the Guide Bar 31 Shroud 32 Cleaning the Air Filter 32 Adjusting the Carburetor 32 Spark Arresting Screen in Muffler 33 Spark Plug 33 Rewind Starter 34 Storing the Machine 35 Checking and Replacing the Chain Sprocket 35 STIHL MS 170 MS 170 C MS 180 MS 180 C Maintaining and Sharpening the Maintenance and Care Ordering Spare Parts Maintenance and Repairs EC Declaration of Conformity 36 40 42 43 44 45 45 English Dear Customer Thank you for choosing a quality engineered STIHL product It has been built using modern production techniques and comprehensive quality assurance Every effort has been made to ensure your satisfaction and troublefree use
5. S o Your chainsaw has a gunning sight on the shroud and fan housing Use this gunning sight Making Felling Notch Position the saw so that the felling notch is at a right angle to the direction you want the tree to fall The sequence in which the felling notch is made with a horizontal cut bottom and angled cut top is defined in country specific regulations e Make horizontal cut bottom e Make the angled cut top at about 45 60 to the horizontal cut MS 170 MS 170 C MS 180 MS 180 C Check direction of fall 001BA153 KN Position the saw in the horizontal cut The gunning sight must point in the planned direction of fall if necessary correct direction of fall by re cutting the felling notch Sapwood cuts z o B x a S Sapwood cuts in long fibered softwood help prevent sapwood splintering when the tree falls Make cuts at both sides of the trunk at same height as bottom of English 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 Do not make sapwood cuts if wood is diseased Basic Information on Felling Cut Stump dimensions z x o D N P4 ao gt o The felling notch C determines the direction of fall The hinge D helps control the falling tree Width of hinge about 1 10 of tree diameter Toreduce the risk of accidents do not cut through
6. Short term storage If the groove is not at least this deep Wait for engine to cool down Keep the machine with a full tank of fuel in a dry place well away from sources of ignition until you need it again Replace guide bar Otherwise the drive links will grind against the base of the groove the bottoms of the cutters and the tie straps Long term storage will not lie against the bar See Storing the machine 143BA026 KN e Flip the bar after each sharpening and each time the chain is changed to avoid uneven wear especially at the sprocket nose and on the bottom e Periodically clean the oil inlet hole 1 oil outlet channel 2 and bar groove 3 e Measure groove depth using the measuring tool on the file gauge special accessory in the area with the greatest wear MS 170 MS 170 C MS 180 MS 180 C 31 English Shroud Removing the shroud d Lg p e Use a suitable tool to open the catch by turning it 90 to the left e Liftoff the shroud je 207BA039 KN Refitting the shroud Install parts in reverse order 32 Cleaning the Air Filter If there is a noticeable loss of engine power Simultaneously press the throttle trigger lockout and throttle trigger and set the Master Control lever to cold start Clean away loose dirt from around the filter Remove the shroud see Shroud 207BA037
7. hinge 4 Do not cut into the hinge Enlarge felling cut as far as stabilizing strap 5 Do not cut into the stabilizing strap Zz x x N lt a o e Insert a felling wedge 6 Shout a second warning immediately before the tree falls 16 Holding the saw with outstretched arms cut through the stabilizing strap horizontally at the same level as the felling cut Felling Cut with Holding Strap Leaner A Small diameter trees Perform this felling cut when the tree diameter is smaller than the length of the guide bar z x i ao o o Shout a second warning immediately before the tree falls gt e Cut through the holding strap at a downward angle from outside with outstretched arms a 001BA265 KN e Plunge the guide bar into the trunk until it emerges at the other side e Enlarge the felling cut E in direction of hinge 1 Cut horizontally Do not cut into the hinge e Enlarge the felling cut in direction of holding strap 2 Cut horizontally Do not cut into the holding strap MS 170 MS 170 C MS 180 MS 180 C B Large diameter trees 001BA267 KN Perform this felling cut when the tree diameter is greater than the length of the guide bar e Engage the spiked bumper behind the holding strap and use it as a pivot avoid repositioning the saw more than necessary e The guide bar nose enters the wood 1 before it
8. x screws Have checked by a specialist dealer X Spark arresting screen in muffler Have cleaned by a specialist dealer or replaced X if necessary Check x Chain catcher Replace x Decarbonise after 139 hours of operation subse Exhaust bore x quently after every 150 hours of operation Safety information label Replace x 7 STIHL recommends STIHL servicing dealers 2 During initial use of professional chain saws with a power output of 3 4 kW or more tighten the cylinder block screws after 10 to 20 hours of operation MS 170 MS 170 C MS 180 MS 180 C 41 English Main Parts 42 207BA031 KN ONoOahWDNDN Shroud catch Carburetor adjusting screw Chain brake Muffler with spark arresting screen Chain sprocket Chain sprocket cover Chain catcher Chain tensioner frontal Guide bar Oilomatic saw chain Adjusting wheel quick tensioner Handle Oil filler cap Bumper spike Front hand guard Front handle handlebar Spark plug boot Starter grip Master control lever Fuel filler cap Throttle trigger Throttle lever lock Rear handle Rear hand guard Machine number MS 170 MS 170 C MS 180 MS 180 C Specifications Engine STIHL single cylinder two stroke engine MS 170 MS 170 C Displacement 30 1 cm Cylinder bore 37 mm Piston stroke 28 mm Engine power according to 1 3 kW 1 8 HP ISO 7293 at 8500 rpm Idle speed 1 2800 rpm MS 180 MS 180 C Displacement 31 8 cm
9. Cylinder bore 38 mm Piston stroke 28 mm Engine power according to ISO 7293 at 9000 rpm Idle speed 1 2800 rpm 1 to ISO 11681 50 rpm 1 5 KW 2 0 HP Ignition system Electronic magneto ignition Spark plug Bosch WSR 6 F suppressed NGK BPMR 7A Electrode gap 0 5 mm MS 170 MS 170 C MS 180 MS 180 C Fuel system All position diaphragm carburetor with integral fuel pump Fuel tank capacity 250 cm 0 25 I Chain lubrication Fully automatic speed controlled oil pump with rotary piston Oil tank capacity 145 cm 0 145 I Weight Dry without cutting attachment MS 170 3 9 kg MS 170 C with ErgoStart 4 2 kg MS 180 3 9 kg MS 180 C with quick tensioner and ErgoStart 4 2 kg Bar and chain MS 170 MS 170 C Actual cutting length may be less than the specified length Rollomatic guide bars Cutting lengths 3 8 P pitch Groove width 30 35 40 cm 1 1 mm Saw chain 3 8 Picco Picco Micro Mini 3 61 PMM3 Type 3610 Pitch Drive link gauge 3 8 P 9 32 mm 1 1 mm English Chain sprockets 6 tooth for 3 8 P Max chain speed to ISO 11681 21 1 m s The average chain speed during operation is normally approx 20 less than the maximum chain speed to ISO 11681 Contact the STIHL dealer when selecting the personal protective equipment Bar and chain MS 180 MS 180 C Actual cutting length may be less than the specified length Rollomatic guide bars Cutting length
10. for an extended period Chain cold Tension is correct when the chain fits snugly against the underside of the bar but can still be pulled along the bar by hand Retension if necessary see Tensioning the Saw Chain 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 the chain may otherwise jump off the bar Retension the chain see Tensioning the Saw Chain orice The chain contracts as it cools down If it is not slackened off it can damage the crankshaft and bearings After a long period of full throttle operation After a long period of full throttle operation allow engine to run for a while at idle speed so that the heat in the engine can be dissipated by flow of cooling air This protects engine mounted components ignition carburetor from thermal overload After finishing work Slacken off the chain if you have retensioned it at operating temperature during work MS 170 MS 170 C MS 180 MS 180 C English Takin re of th i Bar Chain type Chain pitch Minimum Blvorice axing Care of the Guide Ba groove depth Always slacken off the chain again after Picco 1 4 P 4 0 mm finishing work The chain contracts as it f Rapid 1 4 4 0 mm cools down If it is not slackened off it Picco 3 8 P 5 0 mm can damage the crankshaft and bearings Rapid 3 8 0 325 6 0 mm Rapid 0 404 7 0mm
11. hand thumb wrapped around the handlebar Starting Standard versions z y N o lt a N e N With the right hand pull the starter grip slowly until you feel it engage and then give it a brisk strong pull simultaneously press down on the handlebar do not pull the starter rope out all the way risk of breakage Do not let the starter grip snap back guide it vertically back into the housing so that the starter rope can rewind properly With a new engine or after a long period of disuse it may be necessary to pull the starter rope several times to prime the fuel line Versions with ErgoStart The ErgoStart stores the energy for starting the chain saw Forthis reason a few seconds may pass between the pulling of the starter rope and the starting of the engine e With the right hand pull the starter grip slowly and smoothly simultaneously press down on the handlebar do not pull the starter rope out all the way risk of breakage e Donotlet the starter grip snap back guide it vertically back into the housing so that the starter rope can rewind properly Starting the chain saw Awarnine There must not be anyone within the swivel range of the chain saw Observe safety precautions MS 170 MS 170 C MS 180 MS 180 C For all versions e Push the hand guard 1 forwards the saw chain is blocked e Simultaneously press and hold down the throttle trigger lo
12. master control lever into the warm start position Switching to the warm start position is only possible from the cold start position Simultaneously pressing the throttle trigger lockout and blipping the throttle trigger causes the master control lever to jump from the warm start J position to run I To switch off the engine set the master control lever to Stop 0 Position cold start fthe engine is cold ftheengine stalls during opening of throttle after starting fthe fuel tank has run empty engine stalled out Position warm start If engine is warm once the engine has been running for approx one minute When the engine has fired for the first time After ventilation of the combustion chamber if the engine was flooded English Holding the chain saw There are two ways to hold the chain saw during starting On the ground zZ e A e lt a eo a Place the chain saw securely on the ground and assume a steady stance the saw chain must not touch any objects and also must not touch the ground e With the left hand on handlebar press the chain saw firmly against the ground thumb wrapped around the handlebar e Place your right foot into the rear handle 27 English Between the knees or thighs 28 z x A o lt ao N S N Clamp the rear handle between the knees or thighs Grip the handlebar firmly with the left
13. match The drive link gauge 2 of the saw chain 1 must match the groove width of the guide bar 3 If non matching components are used the cutting attachment may be damaged beyond repair after a short period of operation 18 Chain Scabbard 001BA244 KN Your saw comes standard with a chain scabbard that matches the cutting attachment If guide bars of different lengths are mounted to the saw always use a chain scabbard of the correct length which covers the complete guide bar The length of the matching guide bars is marked on the side of the chain scabbard Mounting the Bar and Chain front chain tensioner Removing the chain sprocket cover 143BA034 KN Unscrew the nut and remove the chain sprocket cover C 7 X 7 C 207BA009 KN Turn the screw 1 counterclockwise until the tensioning nut 2 butts against the left end of the housing slot MS 170 MS 170 C MS 180 MS 180 C Disengage the chain brake 001BA186 KN e Pull the hand guard towards the front handle until there is an audible click the chain brake is disengaged Fitting the chain z x co e eo lt e co x d warnine Wear work gloves to protect your hands from the sharp cutters e Fit the chain start at the bar nose MS 170 MS 170 C MS 180 MS 180 C z x o o Ed fea N S a Fit the guide bar over the studs 1 the cutting edges on the top
14. of the bar must point to the right Engage the peg of the tensioner slide in the locating hole 2 place the chain over the sprocket 3 at the same time Turn the tensioning screw 4 clockwise until there is very little chain sag on the underside of the bar and the drive link tangs are engaged in the bar groove Refit the sprocket cover and screw on the nut only fingertight Go to chapter on Tensioning the Saw Chain English Mounting the Bar and Chain quick chain tensioner Removing the chain sprocket cover 2310BA013 KN Swing grip 1 into position until it engages Turn the wing nut 2 to the left until it hangs loosely in the chain sprocket cover 3 Remove chain sprocket cover 3 Mounting the tensioning gear FA F2 x eo lt dm eo D N Remove and reverse tensioning gear 1 19 English Releasing the chain brake e Fitthe saw chain starting at the nose of the guide bar pay attention to the position of the tensioning gear and the cutting edges Turn tensioning gear 1 to the right as far as possible Turn the guide bar so that the tensioning gear faces the user z x o o lt dd o D N 001BA186 KN e Pull hand guard towards the front handle until it engages audibly chain brake is released Fitting the saw chain z x e 5 lt ao io 2310BA016 KN e Place the saw chain on the chain e Position tensioning gear 1 and spro
15. offshoots the saw chain may become caught in them Never cut several limbs at once Do notlean too far forward Donotcut above shoulder height Use extreme caution when re entering a previous cut Do not attempt plunge cuts if you are not experienced in this cutting technique Bealert for shifting of the log or other forces that may cause the cut to close and pinch the chain A Always cut with a correctly sharpened properly tensioned saw chain the depth gauge setting must not be too large Uselow kickback saw chains as well as narrow radius guide bars Pull in A 001BA037 KN When the chain on the bottom of the bar overbucking is suddenly pinched caught or encounters a foreign object in the wood the chain saw may suddenly MS 170 MS 170 C MS 180 MS 180 C be drawn forward toward the log to avoid this engage the bumper spike firmly in the wood Pushback B zZ lt 8 S lt a E S When the chain on the top of the bar underbucking is suddenly pinched caught or encounters a foreign object in the wood the chain saw may suddenly be driven straight back toward the operator to avoid this Donotallow the top of the guide bar to become jammed Donottwist the guide bar in the cut Be very careful With freely hanging limbs With trunks that are under tension between other trees because they fell unfavourabl
16. side of the log Watch out for rolling logs When working at heights Always use a lift bucket Never work on a ladder or in a tree Never work on an insecure support Do not work above shoulder height Never operate your power tool with one hand Begin cutting with the saw at full throttle and engage the spiked bumper firmly in the wood and then continue cutting Never work without the spiked bumper because the saw may pull you forwards and off balance Always engage the spiked bumper securely in the tree or limb 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 When cutting small logs Use a sturdy and stable support sawhorse Never hold the log with your leg or foot Never allow another person to hold the log or help in any other way Limbing Use a low kickback chain Work with the saw supported wherever possible Do not stand on the log while limbing it Do not cut with the bar nose Watch for limbs which are under tension Never cut several limbs at once Lying or standing logs under tension Always make cuts in the correct sequence first at the compression side 1 then at the tension side 2 the saw may otherwise pinch or kick back risk of injury MS 170 MS 170 C MS 180 MS 180 C 001BA151 KN zZ En i
17. with slippery surfaces water snow ice steep slopes uneven ground or green wood that has just been stripped of its bark danger of slipping Use caution with tree stumps roots ditches danger of stumbling Do not work alone keep within calling distance of others who are trained in emergency procedures and can provide help in an emergency Helpers at the cutting site must also wear protective clothing helmet and stand well clear of the branches being cut More care and attention than usual are required when wearing ear protection as warning sounds shouts beeps etc cannot be heard properly Take a break in good time to avoid tiredness or exhaustion risk of accidents Dust e g sawdust fumes and smoke produced while using the machine may be hazardous to health If dust is generated wear a dust mask When the engine is running Note that the saw chain continues to rotate for a short period after you let go of the throttle trigger coasting effect No smoking when working with or near the chain saw risk of fire Combustible fuel vapour may escape from the fuel system English Examine the saw chain periodically at short intervals and as soon as you note any tangible changes Switch off the engine wait until the saw chain is stationary Check condition and secure fitting Check sharpness Never touch the saw chain when the engine is running If the saw chain becomes jam
18. you have any condition that might be aggravated by strenuous work check with your doctor before operating a chain saw Do not operate the chain saw if you are under the influence of any substance drugs alcohol which might impair vision dexterity or judgment To reduce the risk of accidents or injury put off the work in poor weather conditions rain snow ice wind Persons with pacemakers only The ignition system of your chainsaw produces an electromagnetic field of a very low intensity This field may interfere with some pacemakers To reduce health risks STIHL recommends that persons with pacemakers consult their physician and the pacemaker manufacturer before operating this power tool Intended use The machine may only be used to saw wood and wooden objects Do not the machine for any other purpose risk of accidents Do not modify the machine in any way this may increase the risk of personal injury STIHL excludes all liability for personal injury and damage to property caused while using unauthorised attachments English Clothing and Equipment Wear proper protective clothing and equipment Clothing must be sturdy but allow complete free dom of movement Wear snug fitting clothing with cut retardant inserts do not wear a work coat Avoid clothing that could get caught on branches or brush or moving parts of the saw Do not wear a scarf necktie or jewelry Tie up and confine long
19. 605 750 4300 5605 750 4327 5605 750 4327 5605 750 4328 5605 750 4329 5605 750 4330 0000 893 4005 1110 893 4000 1110 893 4000 1110 893 4000 1110 893 4000 1106 893 4000 1 consisting of file holder with round file taper square file and file gauge MS 170 MS 170 C MS 180 MS 180 C 0814 252 3356 0814 252 3356 0814 252 3356 0814 252 3356 0814 252 3356 0814 252 3356 5605 007 1000 5605 007 1027 5605 007 1027 5605 007 1028 5605 007 1029 5605 007 1030 39 English Maintenance and Care The following information applies under normal operating conditions The specified intervals must be shortened accordingly when working for longer than normal each day or under difficult conditions 5 g extensive dust highly resinous lumber lumber from tropical trees etc If the machine is only used 2 occasionally the intervals can be extended accordingly c g z 2 o amp b Oo S S S T o o L D 5 gt gt gt 5 9 o e ee E S Sean d Zs gt lt Visual inspection condition leaks x x Complete machine Clean x Throttle trigger throttle trigger lockout choke lever choke control stop switch master control Function tests X X lever dependent on equipment Function tests X X Chain brake Have checked by a specialist dealer x Check x Manual fuel pump if present Have repaired by a specialist dealer x Check Fue
20. KN e Pull the filter upwards to remove e Knock out the filter or blow it clear with compressed air from the inside outwards do not wash Do not clean fleece filters with a brush If the filter cannot be cleaned or is damaged replace the filter e Reinstall air filter Adjusting the Carburetor Basic information The carburetor has been factory adjusted to provide the engine with a optimal fuel air mixture in all operating states z x D A o lt a n o N Standard setting Check the air filter replace if necessary Check spark arresting screen clean or replace it if necessary Carefully screw the idle speed screw LD down counterclockwise left hand thread until it is firmly seated then 2 turns clockwise standard setting LD 2 Setting the idle speed Start and warm up the engine e Using the idle speed screw LD set the idle speed correctly The saw chain must not rotate Engine speed too low when idling MS 170 MS 170 C MS 180 MS 180 C 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 Turn the idle speed adjusting screw LD slowly counterclockwise until the saw chain stops rotating then turn an additional 1 2 turn in the same direction warnine If the saw chain continues to keep rotating in idle even after adjustment have the chain saw che
21. L lubricant special accessory Slide needle cage onto the crankshaft stub After refitting turn the chain sprocket approx 1 full turn so that the carrier for the oil pump drive engages Refit washer and E clip on the crankshaft 35 English Maintaining and Sharpening the Saw Chain Sawing effortlessly with a properly sharpened saw chain A properly sharpened saw chain cuts through wood effortlessly even with very little pushing Never use a dull or damaged saw chain this leads to increased physical strain increased vibration load unsatisfactory cutting results and increased wear Clean the saw chain Check the saw chain for cracks and damaged rivets e Replace damaged or worn chain components and adapt these parts to the remaining parts in terms of shape and level of wear rework accordingly Carbide tipped Duro saw chains are especially wear resistant For an optimal sharpening result STIHL recommends STIHL servicing dealers A warnine Compliance with the angles and dimensions listed below is absolutely necessary An improperly sharpened saw chain especially depth gauges that are too low can lead to increased kickback tendency of the chain saw risk of injury 36 Chain pitch Z x N A e lt e o e The chain pitch marking a is embossed in the area ofthe depth gauge of each cutter Marking a Chain pitch Inches mm 7 14P 6 35 1 or 1 4 1 4 6 35 6 P
22. Original STIHL parts can be identified by the STIHL part number the STIHL logo and the STIHL parts symbol 57 the symbol may appear alone on small parts MS 170 MS 170 C MS 180 MS 180 C Disposal Observe all country specific waste disposal rules and regulations A x e n S lt a o e e STIHL products must not be thrown in the garbage can Take the product accessories and packaging to an approved disposal site for environment friendly recycling Contact your STIHL servicing dealer for the latest information on waste disposal English EC Declaration of Conformity ANDREAS STIHL AG amp Co KG Badstr 115 D 71336 Waiblingen confirms that the product described below Category Chain saw Make STIHL Model MS 170 MS 180 MS 180 C Serial identification 1130 Displacement all MS 170 30 1 cc all MS 180 31 8 cc conforms to the provisions of Directives 2006 42 EC 2004 108 EC and 2000 14 EC and has been developed and manufactured in compliance with the following standards in the versions valid at the time of production EN ISO 11681 1 EN 55012 EN 61000 6 1 The measured and guaranteed sound power levels were determined according to Directive 2000 14 EC Annex V using the ISO 9207 standard Measured sound power level all MS 170 109 dB A all MS 180 110 dB A Guaranteed sound power level all MS 170 111 dB A all MS 180 112 dB A 45 English The EC type examination was car
23. Renewed contact with waste oil can cause skin cancer Moreover waste oil is environmentally harmful Ehon Waste oil does not have the necessary lubricating properties and is unsuitable for chain lubrication MS 170 MS 170 C MS 180 MS 180 C 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 Preparations Filling Chain Oil Tank by an authorized STIHL servicing dealer z x s lt di o e Thoroughly clean the oil filler cap and the area around it to ensure that no dirt falls into the tank e Position the machine so that the filler cap is facing up Open the filler cap Fill up with chain oil e 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 nozzle for chain oil special accessory e Close the filler cap There must still be a small amount of oil in the oil tank when the fuel tank is empty MS 170 MS 170 C MS 180 MS 180 C English Checking Chain Lubrication z x x a eo lt e e The saw chain must always throw off a small amount of oil B vorice Never operate your saw without chain lubrication If the chain ru
24. TIHL 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 Mixing Fuel Elon Unsuitable fuels or lubricants or mix ratios other than those specified may result in serious damage to the engine Poor quality gasoline or engine oil may damage the engine sealing rings hoses and the fuel tank Gasoline Use only high quality brand name gasoline with a minimum octane rating of 90 leaded or unleaded MS 170 MS 170 C MS 180 MS 180 C If your machine is equipped with a catalytic converter you must use unleaded gasoline liere A few tankfuls of leaded gasoline will greatly reduce the efficiency of the catalytic converter Gasoline with an ethanol content of more than 10 can cause running problems in engines with a manually adjustable carburetor and should not be used in such engines Engines equipped with M Tronic deliver full power when run on gasoline with an ethanol content of up to 25 E25 Engine oil Use only high quality two stroke engine oil preferably STIHL HP HP Super or HP Ultra which are specially formulated for use in STIHL engines HP Ultra guarantees high performance and a long engine life These engine oils are not available in
25. Use the shortest possible guide bar The chain guide bar and chain sprocket must match each other and your saw English z x E lt d 5 o Position the saw so that your body is clear of the cutting attachment Always pull the saw out of the cut with the chain running Use your chain saw for cutting only It is not designed for prying or shoveling away limbs roots or other objects Do not underbuck freely hanging limbs Take care when cutting scrub and young trees The saw chain may catch and throw thin shoots in your direction To reduce the risk of injury take special care when cutting shattered wood because of the risk of injury from slivers being caught and thrown in your direction Make sure your saw does not touch any foreign materials Stones nails etc may be flung off and damage the saw chain The saw may kick back unexpectedly risk of accidents If the rotating chain makes contact with a rock or other solid object there is a risk of sparking which may cause easily combustible material to catch fire under certain circumstances Dry plants and Scrub are also easily combustible especially in hot and dry weather conditions If there is a risk of fire do not use your chainsaw near combustible 10 materials dry plants or scrub Always contact your local forest authority for information on a possible fire risk zZ eo e e lt a E e If on a slope stand on the uphill
26. all markets Use only STIHL 50 1 two stroke engine oil for the fuel mix in models with a catalytic converter Mix Ratio STIHL 50 1 two stroke engine oil 50 parts gasoline to 1 part oil MS 170 MS 170 C MS 180 MS 180 C Examples Gasoline STIHL engine oil 50 1 Liters Liters ml 1 0 02 20 5 0 10 100 10 0 20 200 15 0 30 300 20 0 40 400 25 0 50 500 e Use a canister approved for storing fuel Pour oil into canister first then add gasoline and mix thoroughly Storing Fuel Store fuel only in approved safety type fuel canisters in a dry cool and safe location protected from light and the sun Fuel mix ages only mix sufficient fuel for a few weeks work Do not store fuel mix for longer than 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 Awaenine Pressure may build up in the canister open it carefully e Clean the fuel tank and canister from time to time English Dispose of remaining fuel and cleaning fluid properly in accordance with local regulations and environmental requirements 23 English Fueling mi Preparing the machine Fuel pick up body replacement e Before fueling clean the filler cap and the area around it so that dirt cannot fall
27. appearance of our products periodically Therefore some changes modifications and improvements may not be covered in this manual MS 170 MS 170 C MS 180 MS 180 C Safety Precautions Special safety precau tions must be observed to reduce the risk of per sonal 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 man ual before first use and keep it in a safe place for future reference Non observance of the instruction manual may result in serious or even fatal injury General Observe all applicable local safety regulations standards and ordinances The use of noise emitting power tools may be restricted to certain times by national or local regulations If you have not used this model before Have your dealer or other experienced user show you how to operate your machine or attend a special course in its operation Minors should never be allowed to use a chain saw Keep bystanders especially children and animals away from the work area The user is responsible for avoiding injury to third parties or damage to their property MS 170 MS 170 C MS 180 MS 180 C Do not lend or rent your chain saw without the instruction manual Be sure that anyone using it understands the information contained in this manual To operate a chain saw you must be rested in good physical condition and mental health If
28. cked by a servicing dealer MS 170 MS 170 C MS 180 MS 180 C Spark Arresting Screen in Muffler In some countries the muffler is equipped with a spark arresting screen If the engine is down on power check the spark arresting screen in the muffler Wait for the muffler to cool down zZ x o A o lt e e t Take out the screws 1 and remove the cover 2 Remove the spark arresting screen 3 from the muffler 4 Clean the spark arresting screen If the screen is damaged or heavily carbonized fit a new one Refit the spark arresting screen place the cover in position and secure it with the screws English Spark Plug If the engine is down on power difficult to start or runs poorly at idle speed first check the spark plug 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 Specifications Removing the spark plug m Simultaneously press the throttle trigger lockout and throttle trigger and set the Master Control lever to cold start Remove the shroud see Shroud i Si Ti UW ye Pull off the spark plug boot b 207BA036 KN Unscrew spark plug 33 English Checking the spark plug 000BA039 KN Clean dirty spark plug Check electrode gap A and readjust if neces
29. cket 2 guide bar 3 relative to one another e Slide the guide bar over the collar screw 3 the head of the rear collar screw must protrude into the oblong hole zZ N 5 lt di o e N e Insert and tighten screw 2 181BA012 KN warnine Put on protective gloves risk of injury by the sharp cutters 20 MS 170 MS 170 C MS 180 MS 180 C 135BA011 KN Guide the drive link into the bar groove see arrow and turn the tensioning gear to the left as far as possible e Fit chain sprocket cover sliding the guide lugs into the engine housing openings z x 2 a o D N When fitting the chain sprocket cover the teeth of the adjusting wheel and the tensioning gear must mesh if necessary MS 170 MS 170 C MS 180 MS 180 C turn the adjusting wheel 4 a little until the chain sprocket cover can be slid completely against the engine housing Swing grip 5 into position until it engages Fit wing nut and tighten lightly Next step see Tensioning the Saw Chain English Tensioning the Saw Chain front chain tensioner z x wo x eo lt ea e x Retensioning during cutting work Switch off the engine Loosen the nuts Hold the bar nose up e Use a screwdriver to turn the tensioning screw 1 clockwise until the chain fits snugly against the underside of the bar e While still holding the bar nos
30. ckout 2 and throttle trigger set master control lever Position cold start lf engine is cold even if the engine has stalled during opening of throttle after starting Position warm start f engine is warm once the engine has been running for approx one minute e Hold and start the chain saw MS 170 MS 170 C MS 180 MS 180 C When the engine has turned over for the first time 207BA023 KN Move master control lever 3 to warm start x and continue cranking Once the engine is running z Y x A S lt ao N S A e Press the throttle trigger lockout 2 and blip the throttle trigger 4 the master control lever 3 jumps to run I and the engine begins to idle Elone The engine must be switched to idle immediately otherwise damage to the engine housing and chain brake may occur when the chain brake is locked English z x o 5 lt a E S N Pull the hand guard toward the handlebar The chain brake is released the chain saw is ready for use B vorice Open the throttle only when the chain brake is off Increased engine speeds with the chain brake on saw chain is stationary will quickly damage the clutch and chain brake At very low temperatures Let the engine warm up briefly with the throttle slightly open Switching off the engine Move the master control lever to the stop position 0 If the engine does not start Th
31. e master control lever was not returned from the position cold start to warm start x in time the engine may be flooded 29 English 30 Move the master control lever to the stop position O Remove the spark plug see Spark plug Dry the spark plug Crank the engine several times with the starter to clear the combustion chamber Replace the spark plug see Spark plug Set the master control lever to warm start even if the engine is cold 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 three tank fillings This avoids unnecessarily high loads during the break in period As all moving parts have to bed in during the break in period the frictional resistances in the shortblock are greater during this period The engine develops its maximum power after about 5 to 15 tank fillings During work amp notice Do not make the mixture leaner to achieve an apparent increase in power this could damage the engine see Adjusting the Carburetor B norice Open the throttle only when the chain brake is off Running the engine at high revs with the chain brake engaged chain locked will quickly damage the shortblock and chain drive clutch chain brake Check chain tension frequently A new saw chain must be retensioned more frequently than one that has been in use already
32. e up tighten down the nuts firmly Goto Checking Chain Tension A new chain has to be retensioned more often than one that has been in use for some time Check chain tension frequently see chapter on Operating Instructions 21 English Tensioning the Saw Chain quick chain tensioner e a 5 5 zi Retensioning during cutting work e Shut off the engine e Pull out the hinged clip and loosen the wingnut e Turn the adjusting wheel 1 clockwise as far as stop e Tighten down the wingnut 2 firmly by hand e Fold down the hinged clip e Goto Checking Chain Tension A new chain has to be retensioned more often than one that has been in use for some time e Check chain tension frequently see chapter on Operating Instructions 22 Checking Chain Tension x N o o lt dd e Shut off the engine e Wear work gloves to protect your hands e Thechain must fit snugly against the underside of the bar and it must still be possible to pull the chain along the bar by hand e f necessary retension the chain A new chain has to be retensioned more often than one that has been in use for some time Check chain tension frequently see chapter on Operating Instructions Fuel Your engine requires a mixture of gasoline and engine oil Avon For health reasons avoid direct skin contact with gasoline and avoid inhaling gasoline vapor S
33. g With varying cutter lengths the cutter heights also vary and cause rough running of the saw chain and chain breakage e All cutters must be filed down equal to the length of the shortest cutter ideally one should have this done by a servicing dealer using an electric sharpener Depth gauge setting z x e e e lt a o The depth gauge determines the depth to which the cutter penetrates the wood and thus the chip thickness 37 English a Required distance between depth gauge and cutting edge When cutting softwood outside of the frost season the distance can be increased by up to 0 2 mm 0 008 Chain pitch Depth gauge Distance a Inches mm mm Inches 1 4 P 6 35 0 45 0 018 1 4 6 35 0 65 0 026 3 8 P 9 32 0 65 0 026 0 325 8 25 0 65 0 026 3 8 9 32 0 65 0 026 0 404 10 26 0 80 0 031 Lowering the depth gauges The depth gauge setting is lowered when the cutter is sharpened Check the depth gauge setting after each sharpening Saw chains with humped drive link 2 upper part of the humped drive link 2 with service 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 689BA051 KN Rework the depth gauge so that it is flush with the file gauge x o o lt a Q
34. hair e g with a hair net cap hard hat etc K Wear steel toed safety boots with cut retardant inserts and non slip soles A varnino Y To reduce the risk of eye injuries wear snug fitting aces LY safety glasses in accord ance with European Standard EN 166 Make sure the safety glasses are a good fit Wear a face shield and make sure it is a good fit A face shield alone does not provide adequate eye protection Wear hearing protection e g earplugs or ear muffs Wear a safety hard hat where there is a danger of head injuries from falling objects English Wear heavy duty work gloves made of durable material e g leather STIHL offers a comprehensive range of personal protective clothing and equipment Transport Before any transport even over short distances switch off the machine engage the chain brake and attach the chain scabbard This avoids the risk of the saw chain starting unintentionally z E wo a 5 e Always carry the chain saw by the handle with the hot muffler away from your body the guide bar must point to the rear Avoid touching hot parts of the machine especially the surface of the muffler risk of burns In vehicles Properly secure the machine to prevent tipping damage and chain oil or fuel spillage Cleaning Clean plastic parts with a cloth Harsh detergents can damage the plastic Clean the dust and dirt off the machine do
35. into the tank e Always position the machine so that the filler cap is facing upwards Open the filler cap Refueling Take care not to spill fuel while fueling and do not overfill the tank STIHL recommends use of the STIHL filling system for fuel special accessory A warnine After fueling tighten down the filler cap by hand as securely as possible Use a suitable tool e g screwdriver of the combination wrench for slotted filler caps 24 143BA009 KN Change the fuel pick up body every year to do this e Drain the fuel tank e Pull the fuel pick up body out of the tank with a hook and disconnect it from the hose Connect a new fuel pick up body to the hose e Return the fuel pick up body to the tank 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 Elone Biological chain oil must be resistant to aging e g STIHL BioPlus since it will otherwise quickly turn to resin This results in hard deposits that are difficult to remove especially in the area of the chain drive and chain It may even cause the oil pump to seize The service life of the chain and guide bar depends on the quality of the lubricant It is therefore essential to use only a specially formulated chain lubricant warnine Do not use waste oil
36. k cap After fueling tighten LL down the screw type fuel cap as securely as possible This reduces the risk of unit vibrations causing the fuel cap to loosen or come off and spill quantities of fuel Check for leakage To reduce the risk of serious of fatal burn injuries do not start or run the engine until leak is fixed Before Starting Work Check that your saw is properly assembled and in good condition refer to appropriate chapters in the instruction manual Check the fuel system for leaks paying special attention to visible parts such as the tank cap hose connections and the manual fuel pump on machines so equipped If MS 170 MS 170 C MS 180 MS 180 C there are any leaks or damage do not start the engine risk of fire Have your saw repaired by a servicing dealer before using it again Check operation of chain brake front hand guard Correctly mounted guide bar Correctly tensioned chain Thetrigger 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 O 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 Keep the handles dry and clean free from oil and dirt for safe control of the saw Make sure
37. l pick up body filter in fuel tank Clean replace filter insert x Replace x x x Fuel tank Clean Lubricating oil tank Clean Chain lubrication Check x Check pay attention to sharpness x x Saw chain Check chain tension x Sharpen x Check wear damage x Clean and turn over x Guide bar Deburr x Replace x x Chain sprocket Check x Clean x x Air filter Replace x 40 MS 170 MS 170 C MS 180 MS 180 C English The following information applies under normal operating conditions The specified intervals must be shortened accordingly when working for longer than normal each day or under difficult conditions 5 g extensive dust highly resinous lumber lumber from tropical trees etc If the machine is only used z occasionally the intervals can be extended accordingly 9 g z 2 Oo S E ae S E S S g o o e D 5 gt S gt S gt 5 2 lo e zZ Ss gt Z E c 2 28 8 5 3 8 S d Zs gt El Check x x Anti vibration elements Have them replaced by a servicing dealer x Air intake on fan housing Clean x x x Cylinder fins Clean x x Check idle adjustment saw chain must not X X rotate Carburetor Set the idle speed have the chain saw repaired X by a servicing dealer Adjust electrode gap x Spark plug Replace after 100 hours of operation All accessible screws nuts and bolts not adjusting Tighten2
38. med by an object switch off the engine immediately before attempting to remove the object risk of injury Always turn off the engine before leaving the machine unattended To change the saw chain switch off the engine Risk of injury from the motor starting unintentionally Keep easily combustible materials e g wood chips bark dry grass fuel away from hot exhaust gases and hot mufflers risk of fire Mufflers with catalytic converters can become especially hot Never work without chain lubrication monitor the oil level in the oil tank Stop work immediately if the oil level in the oil tank is too low and top up with chain oil see also Topping up with chain oil and Check chain lubrication If the machine is subjected to unusually high loads for which it was not designed e g heavy impact or a fall always check that it is in good condition before continuing work see also Before starting work Check the fuel system for leaks and make sure the safety devices are working properly Never continue using a machine that is not in perfect working order In case of doubt have the unit checked by your servicing dealer 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 Have the machine repaired by a STIHL servicing dealer if the saw chain still continues to move during idling The chai
39. n saw produces poisonous exhaust gases as soon as the engine starts These gases may be colourless and odour less and may contain unburnt hydrocarbons and benzene Never work with the machine indoors or in poorly ventilated areas even if your machine is equipped with a catalytic converter Ensure proper ventilation when working in trenches hollows or other confined locations risk of fatal injury from breathing toxic fumes If you feel sick have a headache vision problems e g your field of vision gets smaller hearing problems dizziness or inability to concentrate stop work immediately Such symptoms may be caused by an excessively high concentration of exhaust emissions risk of accident After finishing work Switch off the motor engage the chain brake and attach the chain scabbard Storage When the machine is not in use it should be stored in such a way that no one is endangered Secure the machine against unauthorised use Store the machine in a safe dry room Vibrations Prolonged use of the power tool may result in vibration induced circulation problems in the hands whitefinger disease No general recommendation can be given for the length of usage because it depends on several factors The period of usage is prolonged by Hand protection wearing warm gloves Work breaks The period of usage is shortened by Any personal tendency to suffer from poor circulation s
40. nd To do this hold the plunge cutting sight parallel to the chord of the felling notch Felling wedges Make use of wedges as soon as possible i e providing they do not interfere with cutting Drive wedge into felling cut with a suitable tool Use only aluminum or plastic wedges never steel Steel wedges can seriously damage the saw chain and cause dangerous kickback Select felling wedges that suit the diameter of the tree and width of the kerf felling cut E Contact your STIHL dealer for advice on selecting the right felling wedge length width and height Choosing Right Felling Cut The criteria for choosing the right felling cut are the same as those for determining the direction of fall and the escape path There are many different variations of these characteristics Only the two most common characteristics are described in this manual z x 2 o N lt ao 2S o eMe d e e fr a M m nd Left Normal tree vertical trunk with uniform tree crown Leaner tree crown leans in direction of fall Right Felling Cut with Stabilizing Strap Normal Tree A Small diameter trees Perform this felling cut when the tree diameter is smaller than the length of the guide bar MS 170 MS 170 C MS 180 MS 180 C 001BA261 KN Shout a warning before starting the felling cut e Start felling cut E using plunge cut method insert full length of guide bar in the trunk e Engage
41. not use any grease solvents for this purpose Clean the ventilation slots if necessary Do not use a high pressure cleaner to clean the machine The hard jet of water can damage parts of the machine Accessories Only use those tools guide bars chains chain sprockets accessories or technically equivalent components that have been approved by STIHL for this machine If you have any questions in this respect consult a servicing dealer Use only high quality tools and accessories Otherwise there may be a risk of accidents and damage to the machine STIHL recommends the use of genuine STIHL tools guide bars chains chain sprockets and accessories They are specifically designed to match your model and meet your performance requirements Refuelling Petrol is an extremely flammable fuel keep clear of naked flames and fire do not spill any fuel no smoking Switch off the engine before refuelling Never refuel the machine while the engine is still hot the fuel may spill over risk of fire Open the fuel filler cap carefully so that any excess pressure is relieved gradually and fuel does not splash out The machine may only be refuelled in a well ventilated place Clean the machine immediately if fuel is spilled Do not spill fuel over your clothing contaminated clothing must be changed immediately The machines can be equipped with the following filler caps as standard Screw type tan
42. ns dry the whole cutting attachment will be irretrievably damaged within a very short time Always check chain lubrication and the oil level in the tank before starting work Every new chain has to be broken in for about 2 to 3 minutes After breaking in the chain check chain tension and adjust if necessary see Checking Chain Tension 25 English Chain Brake So Locking the chain 143BA011 KN inan emergency when starting atidling speed The chain brake is activated by pushing the hand guard toward the bar nose with your left hand or by inertia in certain kickback situations The chain is stopped and locked 26 Releasing the chain brake z a o X a e e Pull the hand guard back toward the front handle amp orice Always disengage chain brake before accelerating the engine except when checking its operation and before starting cutting work High revs with the chain brake engaged chain locked will quickly damage the powerhead and chain drive clutch chain brake The chain brake is also activated by the inertia of the front hand guard if the kickback force of the saw is high enough The hand guard is accelerated toward the bar nose even if your left hand is not behind the hand guard e g during felling cut The chain brake will operate only if the hand guard has not been modified in any way Check operation of the chain brake Befo
43. o lt a 5 o e Make relieving cut at the compression side 1 e Make bucking cut at the tension side 2 Be wary of pushback when making bucking cut from the bottom upwards underbuck amp votice Do not cut a lying log at a point where it is touching the ground because the saw chain will otherwise be damaged MS 170 MS 170 C MS 180 MS 180 C Ripping cut z x 2 x ao Cutting technique in which the spiked bumper is not used risk of pull in start the cut with the guide bar at the shallowest possible angle take extra care since there is an increased danger of kickback Preparations for Felling Check that there are no other persons in the felling area other than helpers Make sure no one is endangered by the falling tree the noise of your engine may drown any warning calls English s m oo eo o c m o o Maintain a distance of at least 2 1 2 tree lengths from the next felling site Determine direction of fall and escape path Select gap in stand into which you want the tree to fall Pay special attention to the following points The natural lean of the tree Anyunusually heavy limb structure damage The wind direction and speed do not fell in high winds Sloping ground Neighboring trees Snow load Soundness of tree take special care if trunk is damaged or in case of deadwood dry decayed or r
44. of the product Please contact your dealer or our sales company if you have any queries concerning this product Your ha Dr Nikolas Stihl This instruction manual is protected by copyright All rights reserved especially the rights to reproduce translate and process with electronic systems English Guide to Using this Manual This Instruction Manual refers to a STIHL chain saw also called a machine in this Instruction Manual Pictograms Pictograms that appear on the machine are explained in this Instruction Manual Depending on the machine and equipment version the following pictograms may appear on the machine Fuel tank fuel mixture of gasoline and engine oil mi Tank for chain oil chain oil Engage and release chain brake O Coasting brake Direction of chain travel Ematic chain oil flow adjustment En e Tension saw chain Intake air baffle winter operation Intake air baffle summer operation Handle heating Actuate decompression valve gt dd v Uu VI V Actuate manual fuel pump Symbols in text warnine Warning where there is a risk of an accident or personal injury or serious damage to property Elore Caution where there is a risk of damaging the machine or its individual components Engineering improvements STIHL s philosophy is to continually improve all of its products For this reason we may modify the design engineering and
45. on Authorisation and Restriction of Chemical substances For information on compliance with the REACH regulation EC No 1907 2006 see www stihl com reach Ordering Spare Parts 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 re ordering simpler The guide bar and saw chain are subject to normal wear and tear When purchasing these parts always quote the saw model the part numbers and names of the parts Model Serial number Guide bar part number Chain part number MS 170 MS 170 C MS 180 MS 180 C Maintenance and Repairs 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 STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer STIHL dealers are regularly given the opportunity to attend training courses and are supplied with the necessary technical information When repairing the machine only use replacement parts which have been approved by STIHL for this power tool or are technically identical Only use high quality replacement parts in order to avoid the risk of accidents and damage to the machine STIHL recommends the use of original STIHL replacement parts
46. or PM 3 8P 9 32 2 or 325 0 325 8 25 3 or 3 8 3 8 9 32 4 or 404 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 Sharpening and side plate angles 689BA021 KN A Sharpening angle STIHL saw chains are sharpened with a 30 sharpening angle Ripping chains which are sharpened with a 10 sharpening angle are exceptions Ripping chains have an X in the designation B Side plate angle The correct side plate angle results automatically when the specified file holder and file diameter are used Tooth shapes Angle A B Micro semi chisel tooth 30 75 e g 63 PM3 26 RM3 36 RM Super full chisel tooth 30 60 e g 63 PS3 26 RS 36 RS3 Ripping chain e g 10 75 63 PMX 36 RMX The angles must be identical for all cutters in the saw chain Varying angles Rough uneven running of the saw chain increased wear even to the point of saw chain breakage MS 170 MS 170 C MS 180 MS 180 C File holder z x e e o lt ea o Usea file holder Always use a file holder special accessory see table Sharpening tools when sharpening saw chains by hand File holders have markings for the sharpening angle Use only special saw chain files Other files are unsuitable in terms of shape and type of cutting To check the angles 85 75 U5o9 U 80
47. orrectly labelled Store in a dry cool and secure place protected against light and sunlight In the event of a chain brake malfunction switch off the machine immediately risk of injury Consult a English Reactive Forces The most common reactive forces are kickback pushback and pull in Dangers of kickback Kickback can result in fatal cuts zZ e e e lt a Ss o Kickback occurs when the saw is suddenly thrown up and back in an uncontrolled arc towards the operator Kickback occurs if for example z x n w N lt a o e 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 unintentionally touches another limb during limbing The saw chain at the nose of the guide bar is briefly pinched in the cut QuickStop chain brake This device reduces the risk of injury in certain situations it cannot prevent kickback If activated the brake stops the saw chain within a fraction of a second refer to chapter Chain brake in this Instruction Manual Reducing the risk of kickback Work cautiously and methodically Hold the chain saw firmly with both hands and maintain a secure grip Always cut at full throttle Beaware ofthe location ofthe guide bar nose Do not cut with the guide bar nose Be especially careful with small tough limbs undergrowth and
48. otted wood 11 English 12 z lt S S lt a S S Direction of fall Escape path or retreat path Establish paths of escape for everyone concerned opposite to direction of fall at about 45 Remove all obstacles from escape paths Place all tools and equipment a safe distance away from the tree but not on the escape paths Always keep to the side of the falling tree and only walk away along the preplanned escape path On steep slopes plan escape routes parallel to the slope When walking away along the escape path watch out for falling limbs and watch the top of the tree Preparing work area at base of tree First clear the tree base and work area from interfering limbs and brush to provide a secure footing Clean lower portion of tree base e g with an axe sand stones and other foreign objects will dull the saw chain 2 o S x d E S Make the vertical cut first then the horizontal but only if the wood is sound Felling Notch Preparing felling notch z x x N lt a o o The felling notch C determines the direction of fall Important Make felling notch at a right angle to the planned direction of fall Cut close to the ground Cut to a depth of about 1 5 to 1 3 of the trunk diameter MS 170 MS 170 C MS 180 MS 180 C Determine direction of fall with gunning sight on shroud and fan housing o D lt ao
49. re 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 Chain brake maintenance The chain brake is subject to normal wear It is necessary to have it serviced and maintained regularly by trained personnel STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer Maintain the following servicing intervals Full time usage every 3 months Part time usage every 6 months Occasional usage every 12 months MS 170 MS 170 C MS 180 MS 180 C Starting Stopping the Engine Positions of the master control lever zZ e t lt cd S o Stop 0 engine off ignition is switched off Run I Engine running or can start Warm start J this position is for starting the warm engine the master control lever returns to run when the throttle trigger is squeezed Cold start this position is for starting the cold engine MS 170 MS 170 C MS 180 MS 180 C Adjusting the master control lever To adjust the master control lever from run I to cold start J press and hold down the throttle trigger lockout and throttle trigger simultaneously set master control lever To set the master control lever to warm start first set it to cold start then push the
50. reaches the hinge hold the saw horizontally and swing it as far as possible Do not cut into the holding strap or hinge e Enlarge felling cut as far as hinge 2 Do not cut into the hinge e Enlarge felling cut as far as holding strap 3 Do not cut into the holding strap MS 170 MS 170 C MS 180 MS 180 C Continue the felling cut on the other side of the trunk Make sure the second cutis at the same English e Cutthrough the holding strap at a downward angle from outside with outstretched arms height as the first cut Engage the spiked bumper behind the hinge and use it as a pivot avoid repositioning the saw more than necessary The guide bar nose enters the wood 4 before it reaches the holding strap hold the saw horizontally and swing it as far as possible Enlarge felling cut as far as hinge 5 Do not cut into the hinge Enlarge felling cut as far as holding strap 6 Do not cut into the holding strap z x eo N P4 ao S o Shout a second warning immediately before the tree falls 17 English Cutting Attachment A cutting attachment consists of the saw chain guide bar and chain sprocket The cutting attachment that comes standard is designed to exactly match the chain saw e N lt a gt o The pitch t of the saw chain 1 chain sprocket and the nose sprocket of the Rollomatic guide bar must
51. ried out by DPLF Deutsche Pr f und Zertifizierungsstelle f r Land und Forsttechnik NB 0363 Spremberger Stra e 1 D 64823 Gro Umstadt Certification No all MS 170 K EG 2009 3408 all MS 180 K EG 2009 3409 Technical documents deposited at ANDREAS STIHL AG amp Co KG Produktzulassung Product Licensing The year of manufacture and serial number are applied to the product Done at Waiblingen 15 08 2014 ANDREAS STIHL AG amp Co KG y m m Ss Thomas Elsner Director Group Product Management CE 46 MS 170 MS 170 C MS 180 MS 180 C English MS 170 MS 170 C MS 180 MS 180 C 47 English 48 MS 170 MS 170 C MS 180 MS 180 C 0458 207 8321 B AUS 458 207 8321 B
52. s 3 8 P pitch 30 35 40 cm Groove width 1 1 mm Groove width 1 3 mm Saw chains 3 8 Picco Picco Micro Mini 3 61 PMM3 Type 3610 Pitch Drive link gauge 3 8 P 9 32 mm 1 1 mm Picco Micro 3 63 PM3 Type 3636 Picco Duro 63 PD3 Type 3612 Pitch 3 8 P 9 32 mm Drive link gauge 1 3 mm Chain sprocket 6 tooth for 3 8 P Max chain speed to ISO 11681 22 3 m s 43 English The average chain speed during operation is normally approx 2096 less than the maximum chain speed to ISO 11681 Contact the STIHL dealer when selecting the personal protective equipment Sound and vibration levels For further details concerning compliance with the Physical Agents Directive Vibration 2002 44 EC see www stihl com vib Sound pressure level Lys to ISO 22868 MS 170 98 dB A MS 170 C 98 dB A MS 180 98 dB A MS 180 C 98 dB A Sound power level L to ISO 22868 MS 170 109 dB A MS 170 C 109 dB A MS 180 110 dB A MS 180 C 110 dB A Vibration level apy eq to ISO 22867 Handle Handle left right MS 170 4 2 m s 59 m s MS170C 42m s 5 9 m s MS 180 6 6 m s 7 8 m s MS180C 7 6m s2 7 4 m s The K factor in accordance with Directive 2006 42 EC is 2 5 dB A for the sound pressure level and sound power level the K factor in accordance with Directive 2006 42 EC is 2 0 m s for the vibration measurement 44 REACH REACH is an EC regulation and stands for the Registration Evaluati
53. sary see Specifications e Rectify the problems which have caused fouling of the spark plug Possible causes are Too much oil in fuel mix Dirty air filter Unfavorable running conditions r4 x iD a o X a o e e A warnine If the spark plug comes with a detachable adapter nut 1 screw the adapter onto the thread and tighten it down firmly to reduce the risk of arcing and fire 34 Installing the spark plug Install the spark plug and connect the spark plug boot press it down firmly reassembly all other parts in the reverse sequence Rewind Starter To help prolong the wear life of the starter rope observe the following points Pullthe starter rope only in the direction specified e Donotpullthe rope over the edge of the guide bushing e Do not pull out the rope more than specified e Donot allow the starter grip to snap back guide it back into the housing slowly see chapter on Starting Stopping the Engine Have a damaged starter rope replaced by your dealer before it breaks completely STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer MS 170 MS 170 C MS 180 MS 180 C Storing the Machine For periods of 3 months or longer Drain and clean the fuel tank in a well ventilated area Dispose of fuel properly in accordance with local environmental requirements
54. ter when the spark plug boot is removed or the spark plug is unscrewed Do not service or store the machine near a naked flame 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 Specifications MS 170 MS 170 C MS 180 MS 180 C English Check ignition lead insulation in good condition secure connection servicing dealer do not use the machine until the malfunction has been Check that the muffler is in perfect ic working condition Do not use the machine ifthe muffler is damaged or missing risk of fire damage to hearing Never touch a hot muffler risk of burns The condition of the anti vibration elements influences vibration behaviour inspect anti vibration elements periodically Inspect chain catcher replace if damaged Switch off the engine Tocheck the chain tension Toretension the chain Toreplace the chain For remedying malfunctions Observe sharpening instructions for safe and proper handling always keep the chain and guide bar in flawless condition Keep the chain properly sharpened tensioned and well lubricated Change chain guide bar and chain sprocket in due time Regularly check that the clutch drum is in perfect working condition Always store fuel and chain lubricant only in the specified type of containers and ensure they are c
55. the hinge you could lose control of the direction of fall Leave a broader hinge on rotten trees 13 English The tree is felled with the felling cut E Cut horizontally 1 10 at least 3 cm of width of hinge D 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 strap about 1 10 to 1 5 of tree diameter Do not cut into the strap while making the felling cut Leave a broader strap on rotten trees Plunge cutting Forrelieving cuts during bucking For wood carving A I I I i I 1 1 k B 4 2 N N 3 Sai 1 U e c N 001BA269 KN e Use a low kickback chain and exercise particular caution 14 1 Begin cut by applying the lower portion of the guide bar nose do not use upper portion because of risk of kickback Start cutting at full throttle until depth of kerf is twice the width of the guide bar 2 Swing saw slowly into plunge cutting position take care because of the risk of kickback or pushback 3 Make the plunge cut very carefully Danger of pushback z x o D i a o eo Use the plunge cutting sight if possible The plunge cutting sight and the top and bottom of the guide bar are parallel When making the plunge cut the sight helps keep the hinge horizontal i e the same thickness all rou
56. the spiked bumper behind the hinge and use it as a pivot avoid repositioning the saw more than necessary e Enlarge felling cut as far as hinge 1 Do not cut into the hinge e Enlarge felling cut as far as stabilizing strap 2 Do not cut into the stabilizing strap MS 170 MS 170 C MS 180 MS 180 C 001BA273 KN e Insert a felling wedge 3 Shout a second warning immediately before the tree falls Holding the saw with outstretched arms cut through the stabilizing strap horizontally at the same level as the felling cut B Large diameter trees Perform this felling cut when the tree diameter is greater than the length of the guide bar English 001BA263 KN Shout a warning before starting the felling cut e Engage the spiked bumper at the required height of the felling cut and use it as a pivot avoid repositioning the saw more than necessary The guide bar nose enters the wood 1 before it reaches the hinge hold the saw horizontally and swing it as far as possible e Enlarge felling cut as far as hinge 2 Do not cut into the hinge e Enlarge felling cut as far as stabilizing strap 3 Do not cut into the stabilizing strap Continue the felling cut on the other side of the trunk Make sure the second cutis at the same height as the first cut 15 English Start felling cut using plunge cut method Enlarge felling cut as far as
57. there is sufficient fuel and chain oil in the tanks To reduce the risk of personal injury do not operate your saw if it is damaged or not properly assembled Starting the chain saw Always work on a level surface Ensure a firm and secure footing Hold the machine securely the chain must not touch any objects or the floor danger of injury due to the rotating saw chain MS 170 MS 170 C MS 180 MS 180 C Your chain saw is a one person saw Do not allow other persons to be in the working area not even while starting Do not start the chain saw if the chain is in a cut Move at least 3 meters away from the place where the machine was refuelled and never start the motor in enclosed spaces Lock the chain with the chain brake before starting risk of injury due to rotating chain Do not drop start the engine start as described in the Instruction Manual During operation Ensure you always have a firm and safe footing Take special care when the bark is wet danger of slipping Always hold the chain saw firmly with both hands Right hand on the rear handle even if you are left handed To ensure reliable control wrap your thumbs tightly around the handlebar and handle In the event of impending danger or in an emergency switch off the engine immediately by moving the Master Control lever stop switch to STOP 0 or U English Never let the machine run unattended Exercise caution
58. y When working in windbreaks In these cases do not use a chain saw use a hoist winch or dragline instead Pull out trunks that are lying about and have been cut free Whenever possible deal with them in open areas MS 170 MS 170 C MS 180 MS 180 C 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 When felling close to roads rail lines power lines etc work with particular care If necessary notify police power companies or railway authorities English Working Techniques Sawing and felling work including all related work plunge cutting limbing etc may only be carried out by persons who have been specially trained and instructed Persons who are not experienced chain saw users should not carry out any such work increased risk of accidents Country specific legislation on felling technique must be complied with during felling work Cutting Do not operate your saw with the starting throttle lock engaged Engine speed cannot be controlled with the throttle trigger in this position Work calmly and carefully in daylight conditions and only when visibility is good Ensure you do not endanger others stay alert at all times First time users are advised to practice cutting logs on a sawhorse see When cutting small logs
59. ymptoms frequently cold fingers tingling sensations Low outside temperatures The force with which the handles are held a tight grip restricts circulation Continual and regular users should monitor closely the condition of their hands and fingers If any of the above symptoms appear e g tingling sensation in fingers seek medical advice MS 170 MS 170 C MS 180 MS 180 C Maintenance and repairs 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 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 All other work should be carried out by a servicing dealer STIHL recommends that maintenance and repair work be carried out only by authorised STIHL dealers STIHL dealers receive regular training and are supplied with technical information Use only high quality spare parts Otherwise there may be a risk of accidents and damage to the machine If you have any questions in this respect consult a servicing dealer Do not modify the machine in any way this may increase the risk of personal injury risk of accidents To reduce the risk of fire due to ignition outside the cylinder move the master control level to STOP 0 or 9 before turning the engine over on the star

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