Stihl MSA 161 T Notice D'emploi page 11

6 Kickback and Other Reactive Forces
■ Repeated contact with waste oil can cause
skin cancer and its use is harmful to the envi‐
ronment.
► Do not use waste oil to lubricate the bar
and chain of your STIHL chain saw.
5.5.4 Operating Instructions
WARNING
■ To reduce the risk of severe personal injuries
from unintentional starting:
► Never touch a chain with your hand or any
part of your body when the battery is inser‐
ted, even when the chain is not rotating.
► Avoid contacting the trigger switch lockout
and trigger switch when grasping the con‐
trol handle of the chain saw.
■ The chain continues to move for a short period
after the trigger switch is fully released.
► Wait for the chain to stop and engage the
chain brake before walking with the chain
saw or putting it down.
■ In the event of an emergency:
► Switch off the motor immediately, engage
the chain brake and remove the battery.
■ Your chain saw is equipped with a chain
catcher. It is designed to reduce the risk of
personal injury in the event of a thrown or bro‐
ken chain.
► Never operate the chain saw with a dam‐
aged or missing chain catcher.
■ Your top-handle chain saw is equipped with a
ring designed for securing the tool during in-
tree use.
► Never operate the chain saw with a dam‐
aged or missing ring.
■ Contacting foreign objects while sawing might
cause the chain to break or be thrown, or
cause the chain saw to propel dangerous deb‐
ris or kick back in the direction of the operator.
To reduce the risk of severe or fatal personal
injury caused by contact with foreign objects:
► Inspect the tree, log or branch before cut‐
ting.
► Remove any foreign objects to ensure that
the wood is free of materials such as nails,
spikes, cables, or wires.
► Before starting a cut, ensure that it can be
completed without contacting surrounding
objects or structures such as fencing or
stonework.
■ Check the chain and guide bar at regular short
intervals during operation, or immediately if
there is a change in cutting behavior:
► Switch off the motor, activate the chain
brake and remove the battery.
0458-791-8221-D
► Check the condition and tension of the
chain. Look for damage to the chain or
guide bar.
► If the chain cannot be properly tensioned,
or if other components of the saw are worn
or damaged, stop work immediately and
take your chain saw to an authorized STIHL
servicing dealer for inspection, repair or
maintenance.
DANGER
■ To reduce the risk of electrocution:
► Never operate this chain saw in the
vicinity of any wires or cables that
may be carrying electric current.
► Never cut near power lines.
► Do not rely on the chain saw's insu‐
lation against electric shock.
6 Kickback and Other Reac‐
tive Forces
6.1 Reactive Forces
WARNING
■ Reactive forces may occur any time the chain
is rotating. Reactive forces can cause serious
or fatal personal injury.
■ The powerful forces used to cut wood can be
reversed and work against the operator. If the
rotating saw chain is suddenly and signifi‐
cantly slowed or stopped by contact with any
solid object such as a log or branch, or is
pinched, the reactive forces may occur
instantly.
■ These reactive forces may result in loss of
control, which, in turn, may cause serious or
fatal injury.
► An understanding of the causes of these
reactive forces may help you avoid the ele‐
ment of surprise and loss of control. Sur‐
prise contributes to accidents.
The most common reactive forces are:
– Kickback
– Pull-in
– Pushback
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