Chain Brake - Stihl MS 191 T Instruction Manual

Chain Brake

Locking chain with chain brake
– in an emergency
– for starting
– at idle speed
The chain is stopped and locked when
the hand guard is pushed toward the bar
nose by the left hand – or when the
brake is activated by inertia in certain
kickback situations.
MS 191 T
Releasing the chain brake
:
Pull the hand guard back toward the
front handle.
Always disengage the chain brake
before accelerating the engine and
starting the cut (the only exception
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).
English / USA
The chain brake is activated by the
inertia of the front hand guard
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.
Check operation of chain brake
Before starting work:
Run engine at idle speed, engage the
chain brake (push hand guard toward
bar nose). Open the throttle wide for no
more than 3 seconds. The chain must
not rotate. The hand guard must be free
from dirt and move freely.
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