Checking The Saw - Stihl MS 651 Instruction Manual

English
► Pull the starter grip slowly with your right hand
until you feel it engage.
► Pull the starter grip quickly and allow the
starter rope to rewind several times until the
engine runs.
► Depress the throttle trigger lockout (5) and
hold it there.
► Blip the throttle trigger (4).
The Master Control lever (3) springs to posi‐
tion . The engine runs at idling speed.
NOTICE
■ Do not accelerate the engine with the chain
brake engaged since this can damage the
chain brake.
► Disengage the chain brake before you start
cutting.
► Disengage the chain brake.
Your saw is ready for operation.
► If the saw chain rotates while the engine is
idling: See troubleshooting.
Idle speed adjustment is not correct.
► If the engine does not start: Prepare the
engine for the start and then try again to start
the engine.
9.4 Stopping the Engine
► Release the throttle trigger (2) and lockout
lever (3).
The saw chain stops running.
► Move the Master Control lever (1) to posi‐
tion .
The engine stops and the Master Control lever
(1) springs back to position .
► If the engine does not stop:
► Move the Master Control lever to posi‐
tion .
The engine stops.
► Do not use the chainsaw and contact your
STIHL servicing dealer for assistance.
The Master Control lever is defective.
16
3
1
2

10 Checking the Saw

10.1 Checking the Chain Sprocket
► Shut off the engine.
► Disengage the chain brake.
► Remove the chain sprocket cover.
► Remove the bar and chain.
a
► 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 chainsaw and contact your
STIHL servicing dealer for assistance.
The chain sprocket must be replaced.
10.2 Checking the Guide Bar
► Shut off the engine and engage the chain
brake.
► 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 your STIHL
servicing dealer for assistance.
10.3 Checking the Saw Chain
► Shut off the engine and engage the chain
brake.
10 Checking the Saw
19.3.
0458-784-0121-C