Instruction Manual

Table Of Contents
4.9 Reactive Forces
4.9.1 Kickback
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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.
WARNING
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If kickback occurs, the saw can be thrown up
in the direction of the operator. The operator
can lose control of the saw and be seriously or
fatally injured.
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.
4.9.2 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 instruc‐
tion manual.
Keep the guide bar straight in the cut.
Apply the spiked bumper properly.
Always cut with the chain running at full
speed.
4.9.3 Pushback
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The saw is pushed back toward the operator
when the top of the bar is used for cutting.
WARNING
If the rotating chain makes contact with a hard
object and is suddenly pinched, the saw can
be abruptly pushed back toward 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 instruc‐
tion manual.
Keep the guide bar straight in the cut.
Always cut with the chain running at full
speed.
4 Safety Precautions English
0458-809-0121-B. VA0.A21. 9