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18 Troubleshooting
► Perform the following operations:
► Clean the air filter.
► Clean or replace the spark plug.
► Adjust saw for winter or summer operation.
► Carry out the standard setting.
► Adjust idle speed.
► Adjust carburetor for operation at high altitude.
► Adjust carburetor for cutting at temperatures below –10°C.
► If the malfunction still exists: Take the action described in the following table.
Condition
Engine does not
start.
Engine idles errati‐
cally.
Engine stops while
idling
Poor acceleration
Saw chain does not
rotate when throttle is
opened.
Smoke or burning
smell while cutting.
18.2
Making the Standard Setting
► Shut off the engine and engage the chain
brake.
0458-784-0121-C
Cause
Insufficient fuel in the
tank.
Engine is flooded.
Carburetor is too hot. ► Allow chainsaw to cool down.
Carburetor is iced up. ► Allow saw to warm up to +10°C.
Carburetor is iced up. ► Allow saw to warm up to +10°C.
Carburetor is iced up. ► Allow saw to warm up to +10°C.
The chain is over-ten‐
sioned.
Chain lubrication sys‐
tem is supplying
insufficient chain oil.
The chain brake is
engaged.
The chain is over-ten‐
sioned.
Bar nose sprocket is
blocked.
Chain is not properly
sharpened.
Insufficient chain oil
in the tank.
Chain lubrication sys‐
tem is supplying
insufficient chain oil.
The chain is over-ten‐
sioned.
Chainsaw is not
being used properly.
Remedy
► Mix fuel and refuel the chainsaw.
► Clear the combustion chamber.
► If manual fuel pump is fitted: Depress the manual fuel
pump at least 10 times before starting the engine.
► Tension chain properly.
► Increase oil feed rate.
► Disengage the chain brake.
► Tension chain properly.
► Clean the bar nose sprocket with STIHL resin solvent.
► Sharpen the chain properly.
► Fill up with chain oil.
► Increase oil feed rate.
► Tension chain properly.
► Have correct use explained, then practice.
► Turn the high speed screw H clockwise as far
as stop.
H
L
English
27
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