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► If one of the service marks is not visible on a cutter: Do not
use your chainsaw and contact your STIHL servicing
dealer.
► Use a STIHL filing gauge to check that a filing angle of 30°
has been maintained on all cutters. The STIHL filing
gauge must match the chain pitch.
► If a filing angle of 30° has not been maintained:
Resharpen the saw chain.
► If you have any queries: Contact your STIHL servicing
dealer for assistance.
10.4 Testing the Chain Brake
► Engage the chain brake and remove the battery.
WARNING
The chain's cutters are very sharp. There is a risk of cut
injuries.
► Wear work gloves made of durable material.
► Try to pull the chain along the guide bar by hand.
If the chain cannot be pulled along the bar by hand, the
chain brake is functioning.
► If the chain can be pulled along the bar by hand: Do not
use your chain saw and contact your STIHL servicing
dealer.
The chain brake is defective.
10.5 Checking the Controls
Lockout button and trigger lever
► Engage the chain brake and remove the battery.
► Attempt to pull the trigger lever without depressing the
lockout button.
► If the trigger can be pulled: Contact your STIHL servicing
dealer.
The lockout button is faulty.
► Depress the lockout button and hold it in that position.
► Pull the trigger and then let it go.
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10 Testing the Chain Saw and Battery
► If the trigger is stiff or does not spring back to its idle
position: Do not use your chain saw and contact your
STIHL servicing dealer.
The trigger has a malfunction.
Switching on
► Fit the battery.
► Disengage the chain brake.
► Depress the lockout button and hold it in that position.
► Pull the trigger and hold it there.
The chain rotates.
► Release the trigger.
The chain stops rotating.
► If the chain continues to rotate: Engage the chain brake,
remove the battery and contact your STIHL servicing
dealer.
Your saw has a malfunction.
10.6 Checking Chain Lubrication
► Fit the battery.
► Disengage the chain brake.
► Hold the guide bar over a light surface.
► Switch on the saw.
Chain oil is thrown off the chain and is visible on the light
surface. Chain lubrication is operating properly.
If no chain oil can be seen:
► Fill up with chain oil.
► Check chain lubrication again.
► If chain oil is still not visible on the light surface: Do not
use your chain saw and contact your STIHL servicing
dealer. Chain lubrication is defective.
10.7 Testing the Battery
► Press button on battery.
The LEDs glow or flash.
► If the LEDs do not glow or flash: Do not use the battery
and contact your STIHL servicing dealer.
There is a malfunction in the battery.
0458-795-9921-A
