Stihl GTA 26 Instruction Manual page 15

10 Checking the Garden Pruner and Battery
► If wear marks are deeper than a = 0.5 mm: Do
not use the garden pruner and contact your
STIHL dealer for assistance.
The chain sprocket must be replaced.
10.2 Checking the Guide Bar
► Switch off the garden pruner and remove the
battery.
► Remove the chain and guide bar.
► 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 groove depth is less than
specified minimum depth,
– Bar groove is pinched or splayed.
► If you have any queries: Contact a STIHL
servicing dealer for assistance.
10.3 Checking the Saw Chain
► Switch off the garden pruner 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) with a
file, 16.1.
0458-694-8321-B
19.3.
1
2
► Make sure the service marks (1 to 2) on the
cutters are visible.
► If one of the service marks is not visible on a
cutter: Do not use your saw chain and contact
your STIHL servicing dealer for assistance.
► Use a STIHL filing gauge to check that the fil‐
ing angle is 30° on all cutters. The STIHL filing
gauge must match the chain pitch.
► If the filing angle of 30° has not been main‐
tained: Resharpen the saw chain.
► If you have any queries: Contact a STIHL
servicing dealer for assistance.
10.4 Checking the Chain Guard
► Remove the battery.
WARNING
■ The chain's cutters are very sharp. There is a
risk of cut injuries.
► Wear work gloves made of durable mate‐
rial.
► Swing chain guard upward and let it go.
Chain guard springs back to its original posi‐
tion.
► If the chain guard is stiff or does not spring
back to its original position: Do not use the
garden pruner and contact your STIHL dealer
for assistance.
The chain guard is defective.
10.5 Checking the controls
Lockout lever and trigger
► Remove the battery.
► Attempt to pull the trigger without depressing
the lockout lever.
► If the trigger can be pulled: Do not use your
garden pruner and contact a STIHL servicing
dealer.
The lockout lever is faulty.
► Depress the lockout lever and hold it in that
position.
► Press and release the trigger.
English
1
15