Operating The Saw - Stihl MSA 120 C Instruction Manual

English
► 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 cut‐
ters. The STIHL filing gauge must match the
chain pitch.
► If a filing angle of 30° has not been main‐
tained: Resharpen the saw chain.
► If you have any queries: Contact your STIHL
servicing dealer for assistance.
11.4 Testing the Chain Brake
► Engage the chain brake and remove the bat‐
tery.
WARNING
■ The chain's cutters are very sharp. There is a
risk of cut injuries.
► Wear work gloves made of durable mate‐
rial.
► 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.
11.5 Checking the controls
Lockout button and trigger
► Engage chain brake and remove battery.
► Attempt to pull the trigger lever without
depressing the lockout button.
► If the trigger can be pulled: Do not use your
chainsaw and contact your STIHL servicing
dealer.
The lockout button is defective.
► Press and hold the lockout button.
► Press and release the trigger.
► If the trigger is stiff or does not spring back to
its idle position: Do not use your chainsaw and
contact your STIHL servicing dealer for assis‐
tance.
The trigger is defective.
Switching on the chainsaw
► Insert battery.
► Disengage the chain brake.
► Press and hold the lockout button.
► Press and hold the trigger.
The saw chain starts running.
► Release the trigger.
The saw chain stops running.
52
► If the chain continues to rotate: Engage the
chain brake, remove the battery and contact
your STIHL servicing dealer.
Your saw has a malfunction.
11.6 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 oper‐
ating properly.
11.7 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.

12 Operating the Saw

12.1 Holding and Controlling the
Chainsaw
1
► Hold and control your saw with your left hand
on the front handle and your right hand on the
grip area (1) of the control handle. Wrap
thumb of left hand around the front handle and
thumb of right handle around the control han‐
dle.
12.2 Cutting
WARNING
■ If kickback occurs, the saw can be thrown up
in the direction of the operator. This may result
in serious or fatal injuries.
► Always cut with the chain running at full
speed.
► Do not cut with the upper quadrant of the
bar nose.
► Begin the cut with the chain running at full
speed and keep the guide bar vertical.
12 Operating the Saw
0458-716-9821-E