Reactive Forces - Stihl MSA 220.0 T Manual De Instrucciones

4 Safety Precautions
at the tension side (B) from above, directly
above the first cut.
DANGER
■ Working near live electric cables may result in
accidental contact with the saw chain and
damage the cables. This may result in serious
or fatal injury to the user.
► Do not operate in the vicinity of live wires.
4.7.2 Felling
WARNING
■ Inexperienced users cannot assess the dan‐
gers of felling a tree. This can result in serious
or fatal injuries and damage to property.
► If you have any queries: Do not fell the tree
yourself.
■ Parts of the tree being removed and branches
can fall on bystanders or objects during the
felling operation. This can result in serious or
fatal injuries and damage to property.
► Determine direction of fall so that the area
in which the part of the tree being removed
falls is clear.
► Do not allow bystanders, children or ani‐
mals within 2.5 tree lengths of the work
area.
4.8

Reactive Forces

4.8.1 Kickback
Kickback can be caused for the following rea‐
sons:
– 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.
0458-007-9821-A
WARNING
If kickback occurs, the saw can be thrown up
■
in the direction of the operator. Due to the spe‐
cial handle design (closely spaced handles)
there is a risk of the operator losing control of
the chainsaw and sustaining serious or fatal
injuries.
► Hold the saw firmly with both hands.
► Always keep your body out of the plane of
the cutting attachment.
► Use the working techniques described in
this instruction manual.
► Do not cut with the upper quadrant of the
bar nose.
► Always cut with a properly sharpened and
tensioned saw chain.
► Use a reduced kickback saw chain.
► Use a guide bar with a narrow radius nose.
► Always cut with the chain running at full
speed.
4.8.2 Pull-in
The saw is pulled away from the operator when
the bottom of the bar is used for cutting.
WARNING
■ If the rotating chain makes contact with a hard
object and is suddenly pinched, the saw is
abruptly jerked away from the operator. The
operator can lose control of the saw and be
seriously or fatally injured.
► Hold the saw firmly with both hands.
► Operate the saw as described in this
instruction manual.
English
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