Checking The Saw Chain; Testing The Chain Brake; Checking The Controls - Stihl MSA 161 T Instruction Manual

10 Testing the Chain Saw and Battery
► Measure depth of bar groove with scale on
STIHL filing gauge.
► Install a new guide bar if one of the following
points applies:
– Guide bar is damaged.
– Measured bar depth is less than specified
minimum depth,
– Bar groove is pinched or splayed.
► If you have any queries: Contact your STIHL
servicing dealer.
10.3

Checking the Saw Chain

► Switch off the chainsaw, engage the chain
brake and remove the battery.
2
► Use a STIHL filing gauge (2) to check the
height of the depth gauges (1). The STIHL fil‐
ing gauge must match the chain pitch.
► If a depth gauge (1) projects from the filing
gauge (2): Lower the depth gauge (1),
2
4
► Make sure the service marks (1 to 4) on the
cutters are visible.
► 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‐
0458-791-9821-D
19.3.
1
16.3.
1
3
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.
10.4

Testing the Chain Brake

► Switch on the saw.
► Engage the chain brake.
The chain brake is operating properly If the
chain stops immediately.
► If the chain does not stop immediately: Do not
use your chainsaw and contact your STIHL
servicing dealer for assistance.
The chain brake is defective.
10.5

Checking the controls

Lockout button, Ergo lever 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 hold Ergo lever.
► Press the trigger.
Release the locking button.
► Release the trigger and the Ergo lever.
► If either the lockout button, Ergo lever or the
trigger is stiff or does not spring back to the
idle position: Do not use the chainsaw and
contact your STIHL servicing dealer for assis‐
tance.
The lockout button, Ergo lever or 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.
► If 3 LEDs flash red: Remove the battery and
consult a STIHL dealer.
Malfunction in saw.
► Release the trigger.
The saw chain stops running.
► If the chain continues to rotate: Engage the
chain brake, remove the battery and contact
your STIHL servicing dealer.
Your saw has a malfunction.
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