Stihl MS 500i W - Troubleshooting; Troubleshooting Chainsaw

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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.
► Perform 5 uniform bucking cuts at full throttle.
The engine adjusts itself automatically to ambient conditions.
► 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.
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.
Smoke or burning smell
while cutting.
Chain is not properly
sharpened.
► Sharpen the chain properly.
Insufficient chain oil in the
tank.
► Fill up with chain oil.
Chain lubrication system
is supplying insufficient
chain oil.
► Increase oil feed rate.
The chain is over-
tensioned.
► Tension chain properly.
Chainsaw is not being
used properly.
► Have correct use explained, then practice.