Stihl FS 70, Instruction Manual

Page 1: ...STIHL FS 70 Instruction Manual ...

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Page 3: ...ve any queries concerning this product Your Dr Nikolas Stihl Guide to Using this Manual 2 Safety Precautions and Working Techniques 2 Approved Combinations of Cutting Attachment Deflector Handle and Harness 11 Mounting the Bike Handle 12 Mounting the Loop Handle 14 Fitting the Carrying Ring 15 Mounting the Deflector 16 Mounting the Cutting Attachment 16 Fuel 19 Fueling 20 Fitting the Harness 21 Ba...

Page 4: ...ler or other experienced user show you how to operate your machine or attend a special course to learn how to operate it Minors should never be allowed to use the machine except for apprentices over the age of 16 when working under supervision Children animals and onlookers must remain at a safe distance When not using the machine it must be laid down in such a way that it does not endanger anyone...

Page 5: ...nuine STIHL tools and accessories They are specifically designed to match the product and meet your performance requirements Never attempt to modify your power tool in any way since this may increase the risk of personal injury STIHL excludes all liability for personal injury and damage to property caused while using unauthorised attachments The guard provided with your machine may not protect the...

Page 6: ...t your power tool is properly assembled and in good condition refer to appropriate chapters in the User Manual Check the fuel system for leaks especially the visible parts e g fuel cap hose connections manual fuel pump only in machines with a manual fuel pump In case of leakage and damage do not start the engine risk of fire Have the machine serviced by a dealer before using it Use only an approve...

Page 7: ...ll other obstructions because it may begin to run when the engine starts This is a one person machine ensure that there is no one within 15 meters of the machine not even when starting the power tool Risk of injury due to ejected objects Check engine idling The cutting attachment must remain at a standstill when the engine idles throttle trigger released Keep easily combustible materials e g wood ...

Page 8: ...tart suffering from nausea headaches impaired vision e g your field of vision gets smaller impaired hearing dizziness or impaired concentration these symptoms may possibly be the result of too high exhaust gas concentration Risk of accidents Operate your power tool so that it produces a minimum of noise and emissions do not run the engine unnecessarily accelerate the engine only when working To re...

Page 9: ...Misuse with mowing lines that are too long reduces the working speed of the engine The constant slipping of the clutch causes overheating and damage to important components e g clutch plastic housing parts e g due to the cutting attachment rotating during idling risk of injury When using metal cutting attachments STIHL recommends the use of original STIHL metal cutting attachments These have been ...

Page 10: ... training courses and are supplied with the necessary technical information Only use high quality replacement parts in order to avoid the risk of accidents and damage to the machine If you have any questions in this respect consult a servicing dealer STIHL recommends the use of genuine STIHL replacement parts These parts are specifically designed to match your machine model and meet your performan...

Page 11: ...er Blades For mowing unobstructed edges of meadows without posts fences trees or similar obstacles Check the wear limit marks If one of the wear limit marks on the PolyCut mowing head is worn through arrow Do not continue using the mowing head Install a new one There is otherwise a risk of injury from thrown parts of the head It is important to follow the maintenance instructions for the PolyCut m...

Page 12: ...c like a scythe WARNING Improper use may damage the grass cutting blade risk of injury from thrown parts Resharpen the grass cutting blade according to instructions when it has dulled noticeably When using metal cut ting attachments there is a risk of kickout when the rotating blade comes into contact with a solid object such as a tree trunk branch tree stump rock or similar The machine is thrown ...

Page 13: ...lish 11 Approved Combinations of Cutting Attachment Deflector Handle and Harness Cutting Attachment Deflector Handle Shoulder Strap Harness 8 9 11 12 16 17 18 16 18 19 19 19 0000 GXX 0379 A1 10 15 14 13 15 14 1 2 4 5 7 3 6 ...

Page 14: ...de 230 4 230 mm dia 10 Grass cutting blade 230 8 230 mm dia WARNING Non metal grass cutting blades are not approved Deflectors 11 Deflector with blade for mowing heads 12 Deflector for metal cutting attachments Handles 13 Loop handle 14 Loop handle with 15 Barrier bar 16 Bicycle handle Harness 17 Shoulder strap may be used 18 Shoulder strap must be used 19 Full harness may be used Mounting the Han...

Page 15: ...ng the handlebar N Align the handlebar so that distance A is about 20 cm 8 in and distance B about 15 cm 6 in N Tighten down the screws 1 firmly in a crosswise pattern Fitting the Throttle Cable NOTICE Do not kink the throttle cable or lay it in tight radii make sure the throttle trigger moves freely N Position the throttle cable retainer 2 and throttle cable 1 against the drive tube N Close the t...

Page 16: ...ers 2 and nuts 3 N Remove the loop handle 4 and clamps 5 N Fit the square nuts 3 in the barrier bar 6 the holes must line up N Place the clamp 7 in the loop handle 4 and position them both against the drive tube 8 N Position the clamp 8 against the drive tube N Place the barrier bar 6 in position as shown N Line up the holes N Insert the screws 1 in the holes and screw them into the barrier bar as...

Page 17: ...ying ring see Main Parts N Push the carrying ring 1 over the drive tube N Insert the M5 nut in the hex recess in the carrying ring N Fit the M5x14 screw N Line up the carrying ring N Tighten down the screw firmly Metal Version The carrying ring comes standard with the machine or is available as a special accessory For position of carrying ring see Main Parts N Place the clamp 1 against the drive t...

Page 18: ...deflector against the gearbox so that the lug 3 engages the recess 4 in the deflector N Insert the screw 5 and tighten it down firmly Placing power tool on the ground N Shut off the engine N Lay your power tool on its back so that the cutting attachment mounting face is pointing up Fitting the Thrust Plate The machine comes standard with the thrust plate N Slip the thrust plate 1 over the shaft 2 ...

Page 19: ...e and are also available as special accessories Block the shaft The output shaft 2 must be blocked with the stop pin 7 or screwdriver 7 to mount or remove cutting tools These parts come standard with the machine or are available as special accessories N Insert the stop pin 7 or offset screwdriver 7 in the hole 8 in the gearbox as far as stop and apply slight pressure N Rotate shaft or cutting atta...

Page 20: ...ttachment The cutting edges of the grass cutting blades 1 and 2 may point in either direction these cutting attachments must be turned over regularly to reduce one sided wear Cutting edges of grass cutting blade 3 must point clockwise WARNING Direction of rotation is indicated by an arrow on the inside of the deflector N Place the cutting attachment 4 on the thrust plate 5 WARNING Collar see arrow...

Page 21: ...e 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 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 wi...

Page 22: ...time to time Dispose of remaining fuel and cleaning fluid properly in accordance with local regulations and environmental requirements Preparations N Before fueling clean the filler cap and the area around it to ensure that no dirt falls into the tank N Position the machine so that the filler cap is facing up Opening the Tank Cap N Turn the cap counterclockwise until it can be removed from the tan...

Page 23: ...rness 1 and close the locking plate 3 N Adjust the length of the strap with the machine attached the carabiner 2 must be about a hand s width below your right hip N Balance the machine see Balancing the Machine The type and style of the harness and carabiner spring hook depend on the market The carrying ring is integrated in the control handle on loop handled units see Main Parts Loop handled unit...

Page 24: ...position When the correct floating position has been reached N Tighten down the screw on the carrying ring firmly Detaching the unit from the harness N Press down the bar on the carabiner 1 and pull the carrying ring 2 out of the carabiner Controls Version with Bike Handle 1 Throttle trigger lockout 2 Throttle trigger 3 Stop switch with Run and 0 Stop positions Press the stop switch to switch off ...

Page 25: ...old engine cold start N Press in the choke lever 5 and turn it to g at the same time Warm engine warm start N Press in the choke lever 5 and turn it to at the same time Also use this setting if the engine has been running but is still cold Cranking N Place the unit on the ground It must rest securely on the engine support and the deflector N If fitted Remove the transport guard from the cutting at...

Page 26: ...Move the stop switch in the direction of 0 the engine stops release the stop switch it springs back to the run position Other Hints on Starting Engine stalls in cold start position g or under acceleration N Move the choke knob to and continue cranking until the engine runs Engine does not start in warm start position N Move the choke knob to g and continue cranking until the engine runs If the eng...

Page 27: ...gine are greater during this period The engine develops its maximum power after about 5 to 15 tank fillings During Operation After a long period of full throttle operation allow the engine to run for a short while at idle speed so that engine heat can be dissipated by the flow of cooling air This protects engine mounted components ignition carburetor from thermal overload After Finishing Work Stor...

Page 28: ... the choke lever 1 to N Fit the filter cover in position making sure the screw is square Tighten down the screw The carburetor has been set at the factory to provide an optimum fuel air mixture under most operating conditions Adjusting Idle Speed Engine stops while idling N Warm up the engine for about 3 minutes N Turn the idle speed screw LA slowly clockwise until the engine runs smoothly the cut...

Page 29: ...ck electrode gap A and readjust if necessary see Specifications N 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 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 resu...

Page 30: ...ttention to the cylinder fins and air filter N Store the machine in a dry and secure location out of the reach of children and other unauthorized persons N Use a sharpening file special accessory to sharpen dull cutting attachments In case of more serious wear or nicks Resharpen with a grinder or have the work done by a dealer STIHL recommends a STIHL servicing dealer N Sharpen frequently take awa...

Page 31: ...performance during operation If the mowing head is tapped on the ground too often the line limiting blade will unnecessarily cut off unused lengths of nylon line Line feed operates only if both lines are still at least 2 5 cm 1 in long STIHL TrimCut WARNING To reduce the risk of injury always shut off the engine before adjusting the nylon line by hand N Pull the spool up rotate it about 1 6 turn c...

Page 32: ...eplacing the blades Keep the instructions for the mowing head in a safe place WARNING To reduce the risk of injury always shut off the engine before installing the blades N Remove the mowing head N Replace blades as shown in the illustrated instructions N Mount the mowing head on the machine ...

Page 33: ...red Complete machine Visual inspection condition leaks X X Clean X Replace any damaged parts X X Control handle Check operation X X Air filter Visual inspection X X Clean X X Replace X Manual fuel pump if fitted Check X Have repaired by servicing dealer1 X Pickup body in fuel tank Check X Replace X X X Fuel tank Clean X X Carburetor Check idle adjustment the cutting attachment must not run X X Adj...

Page 34: ...uthorized STIHL servicing dealer The following intervals apply to normal operating conditions only If your daily work ing time is longer or operating conditions are difficult very dusty work area etc shorten the specified intervals accordingly before starting work after finishing work or daily after each refueling stop weekly monthly every 12 months if problem if damaged as required ...

Page 35: ...L 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 If these maintenance operations are not carried out as specified the user assumes responsibility for any damage that may occur Among other parts thi...

Page 36: ...ger lockout 10 Bike handle handlebar 11 Handle support 12 Carrying ring 13 Throttle cable retainer 14 Carburetor adjusting screws 15 Choke lever 16 Air filter cover 17 Machine support 18 Loop handle 19 Barrier bar country specific 20 Drive tube 21 Sleeve Serial number Main Parts 21 12 8 7 9 9 8 7 10 11 13 12 15 1 5 20 18 14 16 17 0414BA017 KN 20 19 4 3 2 6 ...

Page 37: ...ressure level Lp to ISO 22868 Sound power level Lw to ISO 22868 1 002BA270 KN 2 3 4 5 Specifications Displacement 27 2cm3 Cylinder bore 34 mm Piston stroke 30 mm Engine power to ISO 8893 0 9 kW 1 2 hp at 8500 1 min Idle speed 2800 rpm Cut off speed nomi nal value 10000 rpm Max output shaft speed cutting attachment 8600 rpm Spark plug suppressed NGK CMR 6 H BOSCH USR 4 AC Electrode gap 0 5 mm Fuel ...

Page 38: ...uction manual The type approval expires if the engine is modified in any way 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 ...

Page 39: ...iance with the following standards in the versions valid on the date of production EN ISO 11806 1 EN 55012 EN 61000 6 1 The measured and the guaranteed sound power level have been determined in accordance with Directive 2000 14 EC Annex V and standard ISO 10884 Measured sound power level Guaranteed sound power level Technical documents deposited at ANDREAS STIHL AG Co KG Produktzulassung The year ...

Page 40: ...the date of production EN ISO 11806 1 EN 55012 EN 61000 6 1 The measured and guaranteed sound power levels were determined in accordance with the UK regulation Noise Emission in the Environment by Equipment for use Outdoors Regulations 2001 Schedule 8 using the ISO 10884 standard Measured sound power level Guaranteed sound power level Technical documents deposited at ANDREAS STIHL AG Co KG The yea...

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