24
English
MS 381
Chain brake maintenance
The chain brake is subject to normal
wear. It is necessary to have it serviced
and maintained regularly by trained
personnel. STIHL recommends that you
have the maintenance and repair work
performed by a STIHL servicing dealer
at the following intervals:
The four positions of the
Master Control lever
1 = Engine off
–
ignition is switched off
2 =
Normal run position
–
engine runs or can fire
To move the Master Control lever from
2
to
3
or
4
, press down the throttle trigger
interlock and squeeze throttle trigger at
the same time.
3 = Warm start
– this position is used to
start a warm engine. The Master
Control lever moves to the normal
run position as soon as the throttle
trigger is squeezed.
4 = Cold start
– this position is used to
start a cold engine.
Models with Decompression
Valve
:
Press in the button to open the
decompression valve.
The decompression valve closes as
soon as the engine fires.
:
For this reason you must press in
the button before each starting
attempt.
Full-time professional
users:
every 3
months
Semi-professional
users (in agriculture
and construction):
every 6
months
Hobby and
occasional users:
every 12
months
Information
Before You Start
215BA001 KN
1
2
3
4
Starting / Stopping the
Engine
133BA001 K
