Owner's Manual

MS 170, MS 170 C, MS 180, MS 180 C
English
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felling cut. The chain brake will operate
only if it has been properly maintained
and the hand guard has not been
modified in any way.
Check operation of chain brake
Before starting work: Run engine at idle
speed, engage the chain brake (push
hand guard toward bar nose).
Accelerate up to full throttle for no more
than 3 seconds – the chain must not
rotate. The hand guard must be free
from dirt and move freely.
Chain brake maintenance
The chain brake is subject to normal
wear. It is necessary to have it serviced
and maintained regularly by trained
personnel, such as your STIHL servicing
dealer, at the following intervals:
Positions of the Master Control lever
Stop 0 – engine off – ignition is switched
off
Run F – engine is running or can start
Warm start n – this position is for
starting the warm engine – the master
control lever returns to run when the
throttle trigger is squeezed
Cold start l – this position is for
starting the cold engine
Adjusting the Master Control lever
To adjust the Master Control lever from
run F to cold start l, press and hold
down the throttle trigger lockout and
throttle trigger simultaneously – set
master control lever.
To set the master control lever to warm
start n, first set it to cold start l, then
push the master control lever into the
warm start n position.
Switching to the warm start n position
is only possible from the cold start l
position.
Simultaneously pressing the throttle
trigger lockout and blipping the throttle
trigger causes the master control lever
to jump from the warm start n position
to run F.
To switch off the engine, set the master
control lever to Stop 0.
Position cold start l
– if the engine is cold
– if the engine stalls during opening of
throttle after starting
– If the fuel tank has run empty
(engine stalled out)
Position warm start n
– if engine is warm (once the engine
has been running for approx. one
minute)
– When the engine has turned over
for the first time
– After ventilation of the combustion
chamber, if the engine was flooded
Full-time usage: every 3
months
Part-time usage: every 6
months
Occasional usage: every 12
months
Starting / Stopping the
Engine
STOP
0
001BA140 KN