0458-786-0121-A
38
English
18 Troubleshooting
18.1 Troubleshooting Chainsaw
18 Troubleshooting
Most malfunctions have the same causes.
► 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 Cause Remedy
Engine does not start. Insufficient fuel in the tank. ► Mix fuel and refuel the chainsaw.
Engine is flooded. ► Clear the combustion chamber.
Carburetor is too hot. ► Allow chainsaw to cool down.
► If manual fuel pump is fitted: Depress the manual fuel pump at
least 10 times before starting the engine.
Carburetor is iced up. ► Allow saw to warm up to +10°C.
Engine idles erratically. Carburetor is iced up. ► Allow saw to warm up to +10°C.
Engine stops while idling Carburetor is iced up. ► Allow saw to warm up to +10°C.
Poor acceleration The chain is over-
tensioned.
► Tension chain properly.
Chain lubrication system
is supplying insufficient
chain oil.
► Increase oil feed rate.
Saw chain does not rotate
when throttle is opened.
The chain brake is
engaged.
► Disengage the chain brake.
The chain is over-
tensioned.
► Tension chain properly.
Bar nose sprocket is
blocked.
► Clean the bar nose sprocket with STIHL resin solvent.
To Next Page
Loading...
