Devices For Reducing The Risk Of Kickback Injury - Stihl MSA 120 C Manual De Instrucciones

English
kickback injuries may lose some of their effectiveness
when they are no longer in their original condition,
especially if they have been improperly maintained.
– Read and follow the safety precautions and
instructions in this manual.
– When working, always position the chain saw such
that your body is clear of the cutting attachment and
outside of the cutting plane.
– Follow the maintenance and service instructions in
this manual.
￭ For the chain saw to meet the chain saw kickback
standards, use only the following cutting attachments:
– Compliant bar and chain combinations listed in
"Combinations of Guide Bars and Saw Chains,"
@ 27;
– Other replacement bar and saw chain combinations
marked in accordance with the standards for use on
the chain saw; or
– Replacement saw chain designated "low kickback
saw chain."
7.2.3

Devices for Reducing the Risk of Kickback Injury

The STIHL Quickstop chain brake and STIHL's green-
labeled, reduced kickback bars and green-labeled, low
kickback saw chains are designed to reduce the risk of
kickback injury.
1. STIHL Quickstop Chain Brake
20
7 Kickback and Other Reactive Forces
There are two mechanisms for activating the chain brake if
it is in a properly maintained condition:
– Manual Activation: If a kickback occurs, the chain saw
moves upwards toward the user in a rotating motion
around the front handle. The brake is designed to engage
if the left hand contacts the front hand guard, which is the
activation lever for the brake, and pushes it forward.
– Inertia Activation: All STIHL chain saws are equipped with
an inertia Quickstop chain brake. If the kickback impulse
is strong enough, this alone is sufficient to engage the
brake even without contacting the front hand guard.
WARNING
￭ To reduce the risk of kickback injury:
– Never use a saw if the chain brake does not function
properly.
– When in doubt, take the saw to an authorized STIHL
servicing dealer for inspection and/or repair.
– Do not use the saw until the problem has been
corrected.
￭ In a kickback situation, the front hand guard helps protect
your left hand from contacting the saw chain. Removal of
the front hand guard on a chain saw equipped with a
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