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MS 270, MS 270 C, MS 280, MS 280 C

English

41

Observing the instructions in this manual 
helps reduce the risk of unnecessary 
wear and damage to the power tool.

The power tool must be operated, 
maintained and stored with the due care 
and attention described in this owner's 
manual.

The user is responsible for all damage 
caused by non-observance of the safety 
precautions, operating and maintenance 
instructions in this manual. This includes 
in particular:

Alterations or modifications to the 
product not approved by STIHL.

Using tools or accessories which 
are neither approved or suitable for 
the product or are of a poor quality.

Using 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.

Maintenance Work

All the operations described in the 
"Maintenance Chart" must be performed 
on a regular basis. If these maintenance 
operations cannot be performed by the 
owner, they should be performed 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.

If these maintenance operations are not 
carried out as specified, the user 
assumes responsibility for any damage 
that may occur.  Among other parts, this 
includes:

Damage to the engine due to 
neglect or deficient maintenance 
(e.g. air and fuel filters), incorrect 
carburetor adjustment or 
inadequate cleaning of cooling air 
inlets (intake ports, cylinder fins).

Corrosion and other consequential 
damage resulting from improper 
storage.

Damage to the machine resulting 
from the use of poor quality 
replacement parts.

Parts Subject to Wear and Tear

Some parts of the power tool are subject 
to normal wear and tear even during 
regular operation in accordance with 
instructions and, depending on the type 
and duration of use, have to be replaced 
in good time. Among other parts, this 
includes:

Saw chain, guide bar

Drive components (clutch, clutch 
drum, chain sprocket)

Filters (air, oil, fuel)

Starter mechanism

Spark plug

Components of antivibration system

Minimize Wear and Avoid 

Damage

Summary of Contents for MS 270

Page 1: ...STIHL MS 270 280 Instruction Manual...

Page 2: ......

Page 3: ...nd Chain side chain tensioner 14 Mounting the Bar and Chain quick chain tensioner 15 Tensioning the Saw Chain side chain tensioner 17 Tensioning the Saw Chain quick chain tensioner 17 Checking Chain T...

Page 4: ...ers Secure it against unauthorized use The user is responsible for avoiding injury to third parties or damage to their property Guide to Using this Manual Fuel tank fuel mixture of gasoline and engine...

Page 5: ...uide bars chains chain sprockets and accessories They are specifically designed to match your model and meet your performance requirements Never attempt to modify your power tool in any way since this...

Page 6: ...safe control of the chain saw To reduce the risk of personal injury do not operate your saw if it is damaged or not properly assembled Starting the engine Start the engine at least 3 meters from the...

Page 7: ...e g sawdust vapor and smoke produced during operation may be dangerous to health If dust levels are very high wear a suitable respirator Check the saw chain at regular short intervals during operation...

Page 8: ...tain a secure grip Always cut at full throttle Be aware of the location of the guide bar nose at all times Do not cut with the bar nose Take special care with small tough limbs they may catch the chai...

Page 9: ...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 vi...

Page 10: ...into which you want the tree to fall Pay special attention to the following points The natural lean of the tree Any unusually heavy limb structure damage The wind direction and speed do not fell in h...

Page 11: ...N Make the horizontal cut check the direction of fall with the gunning sight N Make angle cut at about 45 N Check the felling notch and correct it if necessary Important Felling notch at a right angl...

Page 12: ...den aluminum or plastic wedges Never steel which can damage the chain and cause kickback The hinge E helps control the falling tree Do not cut through the hinge you could lose control of the direction...

Page 13: ...as for the simple fan cut do not cut through the hinge Special cutting techniques Plunge cuts and heartwood cuts require special training and experience Plunge cutting For felling leaners For relievi...

Page 14: ...ar nose Watch for limbs which are under tension Never cut several limbs at once When cutting small logs Use a sturdy and stable support sawhorse Never hold the log with your leg or foot Never allow an...

Page 15: ...ing out any maintenance or repairs or cleaning the machine Exception Carburetor and idle speed adjustments Do not turn the engine over on the starter with the spark plug boot or spark plug removed unl...

Page 16: ...non matching components are used the cutting attachment may be damaged beyond repair after a short period of operation Removing the chain sprocket cover N Unscrew the nuts and take off the chain spro...

Page 17: ...s only fingertight N Go to chapter on Tensioning the Saw Chain Remove the chain sprocket cover N Pull out the hinged clip 1 so that it snaps into position N Turn the wingnut 2 counterclockwise until i...

Page 18: ...op N Turn the guide bar so that the tensioning gear is facing you N Fit the chain over the sprocket 2 N Fit guide bar in position the collar screw 3 engages the hole in the tensioning gear The heads o...

Page 19: ...side of the bar N While still holding the bar nose up tighten down the nuts firmly N Go to Checking Chain Tension A new chain has to be retensioned more often than one that has been in use for some ti...

Page 20: ...e only quality two stroke engine oil We recommend STIHL two stroke engine oil since it is specially formulated for use in STIHL engines and guarantees a long engine life If STIHL two stroke engine oil...

Page 21: ...g 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...

Page 22: ...y an environmentally compatible quality chain and bar lubricant Rapidly biodegradable STIHL Bioplus is recommended The service life of the chain and guide bar depends on the quality of the lubricant I...

Page 23: ...k 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...

Page 24: ...fore 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 b...

Page 25: ...w speed screw L has been adjusted it is usually also necessary to adjust the idle speed adjusting screw LA see Setting the carburetor N if the chain saw is extremely cold frost formation after startin...

Page 26: ...utter closed l if engine is cold if the engine stalls during opening of throttle after starting if the fuel tank has run empty engine stalled out Position starting acceleration n if engine is warm onc...

Page 27: ...decompression valve N Press the button the decompression valve will be opened The decompression valve is closed automatically when the engine starts for the first time For this reason press the button...

Page 28: ...see Winter Operation Switch off engine N Move the Master Control lever to the stop position 0 If the engine does not start The Master Control lever was not returned from the position choke shutter clo...

Page 29: ...Chain 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 fl...

Page 30: ...ide bar The drive link tangs will otherwise scrape along the bottom of the groove the cutters and tie straps will not ride on the bar rails The air filter system can be adapted to suit different opera...

Page 31: ...g the air filter N Fit filter 3 in position arrows N Mount carburetor box cover Basic information The carburetor comes from the factory with a standard setting The carburetor has been adjusted for opt...

Page 32: ...chain stops turning then turn another full turn in the same direction Speed erratic when idling poor acceleration despite low speed screw standard setting N Set low speed screw L to standard setting N...

Page 33: ...e muffler cool down N Remove screw 1 N Pull out spark arresting screen 2 N Clean the dirty spark arresting screen replace if damaged or heavily carbonized N Refit the spark arresting screen N Insert a...

Page 34: ...rburetor box cover Removing the fan cover N Remove screws 1 N Push hand guard upward N Pull the bottom of the fan cover away from the fan housing and remove downwards Replace torn starter rope N Caref...

Page 35: ...read the rope from above through the rope guide bush 6 and rope rotor 7 and secure with a simple overhand knot N Coat the bearing bore in the rope rotor with non resinous oil N Slip the rope rotor ont...

Page 36: ...etc to the recesses and push the spring into its seat in the fan cover the spring slides out of the frame N Reinstall the rope rotor tension the rewind spring replace the fan cover and screw it into...

Page 37: ...the washer 2 N Remove rim sprocket 3 N Inspect transport profile on the clutch drum 4 if there are also heavy signs of wear also replace the clutch drum N Remove clutch drum or spur chain sprocket 5 i...

Page 38: ...g angle B Side plate angle The specified angles A and B are obtained automatically if the recommended files or sharpening tools and correct settings are used The angles must be the same on all cutters...

Page 39: ...on the backstroke N Avoid touching the tie straps and drive links with the file N Rotate the file at regular intervals while filing to avoid one sided wear N Use a piece of hardwood to remove burrs fr...

Page 40: ...icate the chain thoroughly N Before a long out of service period clean the chain and store it in a well oiled condition 689BA047 KN 1 The kickback tendency of the saw is increased if the depth gauges...

Page 41: ...problem if damaged if required Complete machine Visual inspection condition leaks X X Clean X Throttle trigger throttle trigger lockout choke lever stop switch Master Control lever depending on versio...

Page 42: ...bels Replace X 1 STIHL recommends a STIHL servicing dealer 2 Firmly tighten down the cylinder base screws of professional saws 3 4 kW or more after 10 to 20 hours of operation The following maintenanc...

Page 43: ...icing 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 traini...

Page 44: ...nding on equipment version 9 Side chain tensioner depending on equipment version 10 Chain catcher 11 Bumper spike 12 Guide bar 13 Oilomatic saw chain 14 Oil filler cap 15 Muffler 16 Front hand guard 1...

Page 45: ...rpm Maximum permissi ble speed with bar and chain 13500 rpm Displacement 54 7 cm3 Bore 46 mm Stroke 32 9 mm Engine power to ISO 7293 2 8 kW 3 8 HP at 9500 rpm Idle speed 2800 rpm Cut off speed 14500 r...

Page 46: ...ver the full length of the guide bar a suitable chain scabbard or a scabbard extension is necessary Depending on the model the scabbard extension either comes standard with the saw or is available as...

Page 47: ...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...

Page 48: ...10 ANDREAS STIHL AG Co KG pp Elsner Head of Product Group Management All STIHL products comply with the highest quality standards An independent organization has certified that all products manufactur...

Page 49: ...MS 270 MS 270 C MS 280 MS 280 C English 47...

Page 50: ...MS 270 MS 270 C MS 280 MS 280 C English 48...

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Page 52: ...www stihl com 04581460121A 0458 146 0121 A 0458 146 0121 A englisch G...

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