Owner's Manual

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143BA012 KN
143BA011 KN
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- in an emergency
- when starting
- at idling speed.
•
The chain is stopped and locked
when the hand guard is pushed
toward the bar nose by the left hand -
or when brake is activated by inertia
in certain kickback situations.
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•
Pull the hand guard back toward
the front handle.
1RWHAlways disengage chain brake
before accelerating engine and before
starting cutting work. The only exception
to this rule is when you check operation
of the chain brake. High revs with the
chain brake engaged (chain locked) will
quickly damage the powerhead and
chain drive (clutch, chain brake).
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if the kickback force of the saw is high
enough:
The hand guard is accelerated toward
the bar nose - even if your left hand is
not behind the hand guard, e.g. during
felling cut.
The chain brake will operate only if the
hand guard has not been modified in
any way.
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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 of
dirt and move freely.
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The chain brake is subject to normal
wear and tear. It must therefore be
checked and serviced regularly by
trained personnel (e.g. STIHL dealer) at
the following intervals:
Full-time professional
users: every 3 months
Semi-professional
users: every 6 months
Occasional
users: every 12 months
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