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STIHL KA 120, 250

Instruction Manual

2 - 22

Summary of Contents for KA 120

Page 1: ...STIHL KA 120 250 Instruction Manual 2 22 ...

Page 2: ...dealer or our sales company if you have any queries concerning this product Your Dr Nikolas Stihl 1 KombiAttachmentSystem 002BA532 KN In the STIHL KombiAttachmentSystem a number of different KombiAttachmentEngines and attach ments can be combined to produce a power tool In this instruction manual the functional unit formed by the KombiAttachmentEngine and attachment is referred to as the power too...

Page 3: ...nd its operation do not lend of rent your machine without the instruc tion manuals of the KombiAttachmentEngine and power tool attachment The use of noise emitting power tools may be restricted to certain times by national or local regulations To operate the power tool you must be rested in good physical condition and mental health If you have any condition that might be aggrava ted by strenuous w...

Page 4: ...type cap correctly in the opening turn it clockwise as far as stop and fold the grip down This reduces the risk of unit vibrations causing the fuel cap to loosen or come off and spill quan tities of fuel To reduce the risk of serious or fatal burn inju ries check for fuel leakage If fuel leakage is found do not start or run the engine until leak is fixed 3 4 Before Starting Check that your power t...

Page 5: ...ine in the instruction manual of the power tool attachment you are using 3 6 Holding and Controlling the Power Tool Always hold the power tool firmly with both hands on the handles Make sure you always have good balance and secure footing 3 6 1 Models with bike handle 002BA055 KN Right handle on control handle left hand on left handle 3 6 2 Models with loop handle 002BA080 KN Left hand on loop han...

Page 6: ...eed cannot be con trolled in this position Before leaving the power tool unattended Shut off the engine To reduce the risk of unintentional engine start and injury always shut off the engine and remove the spark plug boot before changing the attachment 3 8 Vibrations Prolonged use of the power tool may result in vibration induced circulation problems in the hands whitefinger disease No general rec...

Page 7: ...s at regular intervals 4 Approved Power Tool Attachments The following STIHL attachments may be moun ted to the basic power tool FS B FS A BF 228BA071 KN Interchangeable Attachment Application FS A 1 Brushcutter with mowing head FS B 1 2 Brushcutter with metal cutting attachment BF Cultivator with pick tines 5 Mounting the Bike Handle 5 1 Mounting Bike Handle with Swiveling Handle Support The mach...

Page 8: ...rew at the side nearest the engine Push the wing screw into the handle support as far as stop and then screw it down but do not finally tighten yet Line up the handlebar at a right angle to the drive tube check distance A again Tighten down the wing screw firmly 5 1 3 Mounting the Control Handle Take out the screw 9 the nut 10 remains in the control handle 11 Push the control handle onto the handl...

Page 9: ...t position 3 7 90 002BA650 Loosen the wing screw 3 and unscrew it until the handlebar 7 can be rotated Rotate the handlebar 90 counterclockwise and then swing the handles down Tighten down the wing screw 3 firmly Working position Reverse the sequence described above to swing the handles up and turn the handlebar clockwise 6 Adjusting the Throttle Cable A properly adjusted throttle cable is the pre...

Page 10: ...e 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 8 2 Mixing Fuel NOTICE Unsuitable fuels or lubricants or mix ratios other than those specified may result in serious dam...

Page 11: ... 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 WARNING Pressure may build up in the canister open it carefully Clean the fuel tank and canister from time to time Dispose of ...

Page 12: ...hrottle trigger lockout 2 Throttle trigger 3 Slide control 10 1 1 Positions of slide control 4 STOP 0 engine off ignition is switched off 5 F normal run position the engine is running or can start 6 START ignition is switched on the engine can start 10 1 2 Symbol on slide control 7 h stop symbol and arrow To stop the engine push the slide control in the direction of the arrow on the stop symbol h ...

Page 13: ...slide control NOTICE Do not stand or kneel on the drive tube 002BA072 KN Hold the starter grip with your right hand Pull the starter grip slowly until you feel it engage and then give it a brisk strong pull NOTICE Do not pull out the starter rope all the way it might otherwise break Do not let the starter grip snap back Guide it slowly back into the housing so that the starter rope can rewind prop...

Page 14: ...o section on Starting and re start the engine as described for a cold engine 11 Operating Instructions 11 1 During 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 unnecessary high loads dur ing the break in period As all moving parts have to bed in during the break in period the frictional resistances in the ...

Page 15: ...the same direction WARNING If the attachment continues to run when the engine is idling have your machine checked and repaired by your servicing dealer 13 4 3 Erratic idling behavior poor accelera tion despite correction to setting of LA screw Idle setting is too lean Turn the low speed screw L counterclock wise no further than stop until the engine runs and accelerates smoothly 13 4 4 Erratic idl...

Page 16: ...e adapter nut 1 is loose or missing Working in an easily combustible or explosive atmosphere may cause a fire or an explosion This can result result in serious inju ries or damage to property Use resistor type spark plugs with a properly tightened adapter nut 14 3 Installing the Spark Plug 2 002BA446 KN 1 Screw the spark plug 2 into the cylinder and fit the boot 1 press it down firmly 15 Engine Ru...

Page 17: ...f injury 6 5 256BA033 KN Pry the cap 5 out of the grip Remove the remaining rope from the rotor and starter grip Tie a simple overhand knot in the new rope and then thread it through the top of the grip and the rope bushing 6 Refit the cap in the grip 256BA034 KN Thread the rope through the rotor and secure it with a simple overhand knot Coat the rope rotor bearing bore with non res inous oil Slip...

Page 18: ...rotor and spring housing To reduce the risk of injury Wear a face shield and work gloves 7 7 271BA053 KN Take out the screws 7 Remove the spring housing and pieces of spring Lubricate the new ready to fit replacement spring in the new spring housing with a few drops of resin free oil Place the replacement spring with spring housing in position bottom plate facing up If the spring pops out and unco...

Page 19: ...s must be short ened accordingly when working for longer than nor mal or under difficult cutting conditions extensive dust etc Before starting work At the end of work and or daily Whenever tank is refilled Weekly Monthly Annually If faulty If damaged As required Complete machine Visual inspection condi tion leaks X X Clean X Control handle Function test X X Air filter Clean X X replace X Manual fu...

Page 20: ...sing the product for purposes for which it was not designed Using the product for sports or competitive events Consequential damage caused by continuing to use the product with defective components 20 1 Maintenance Work All the operations described in the Maintenance Chart must be performed on a regular basis If these maintenance operations cannot be per formed by the owner they should be performe...

Page 21: ... bhp at 9 000 rpm Idle speed 2 800 rpm Cut off speed rated 12 300 rpm 22 2 Ignition System Electronic magneto ignition Spark plug resistor type Bosch WSR 6 F NGK BPMR 7 A Electrode gap 0 5 mm 22 3 Fuel System All position diaphragm carburetor with integral fuel pump Fuel tank capacity 640 cc 0 64 l 22 4 Weight dry without attachment KA 120 5 7 kg KA 250 5 7 kg 22 5 Overall length without attachmen...

Page 22: ...his 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 Original STIHL parts can be identified by the STIHL part number the logo and the STIHL parts symbol K the symbol may appear alone on small parts 24 Disposal Observe all country specific was...

Page 23: ...24 Disposal English 0458 516 0121 B 23 ...

Page 24: ...www stihl com 04585160121B 04585160121B 0458 516 0121 B 0458 516 0121 B ...

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