Stihl MSA 220 T - Page 41

a
0000-GXX-1216-A0
► Use a STIHL gauge to check the wear marks
on the sprocket.
► If wear marks are deeper than a = 0.5 mm: Do
not use your chain saw and contact your
STIHL servicing dealer.
The chain sprocket must be replaced.
10.2 Checking the Guide Bar
► Switch off the chain saw, engage the chain
brake and remove the battery.
► Remove the chain and guide bar.
0000-GXX-1217-A0
► 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, 19.3.
–
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.
1
0000-GXX-1218-A0
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),
16.3.
0000-GXX-1372-A0
1
2
3
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‐
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
Trigger lockout and trigger
► Engage chain brake and remove battery.
► Try pressing the trigger without pressing the
trigger lockout.
► If the trigger can be pulled: Do not use your
chainsaw and contact your STIHL servicing
dealer.
The trigger lockout is faulty.
► Press and hold the trigger lockout.
► Press and release the trigger.
► If the trigger switch or the trigger switch lock‐
out is stiff or does not spring back to its initial
position: Do not use the chainsaw. Consult a
STIHL servicing dealer.
The trigger or the trigger lockout is defective.
10 Testing the Chain Saw and Battery English
0458-007-9621-A 41