Reactive Forces - Stihl MSA 161 T Gebrauchsanleitung

4 Safety Precautions
WARNING
￭ The guide bar can be pinched when cutting wood that is
under tension. The user can lose control of the saw and
be seriously injured.
► Make a relieving cut in the compression side (1) first,
then perform bucking cut at the tension side (2).
DANGER
￭ Working near live electric cables can result in accidental
contact with the chain and damage the cables. This can
result in serious or fatal injuries.
► Do not work near live electric cables.
4.7.2 Limbing
WARNING
￭ If the underside of the felled tree is limbed first, it will no
longer be supported on the ground by branches. The tree
can move during cutting work. This can result in serious or
fatal injuries.
► Cut through large limbs on the underside of the tree only
after it has been bucked.
► Do not stand on the log while limbing it.
￭ A branch may fall to the ground during limbing. The user
may trip, fall or be seriously injured.
► Limb from the base to the crown of the tree.
0458-791-9621-A
4.8

Reactive Forces

4.8.1 Kickback
Kickback can be caused for the following reasons:
– The rotating saw chain in the upper quadrant of the bar
nose makes contact with a hard object and is suddenly
braked.
– The rotating saw chain is pinched at the bar nose.
The chain brake cannot prevent kickback.
WARNING
￭
￭ If kickback occurs, the saw can be thrown up in the
direction of the operator. Due to the special handle design
(closely spaced handles) there is a risk of the operator
losing control of the chainsaw and sustaining serious or
fatal injuries.
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