Stihl HTA 135 Instruction Manual page 9

4 Safety Precautions
WARNING
■ During delimbing the sawn-off branch may fall
to the ground. This may result in serious injury
to the user.
► Do not stand under the branch which you
are sawing.
► Maintain an angle of no more than 60° to
the horizontal.
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.
WARNING
If kickback occurs, the pole pruner can be
■
thrown upwards and backwards. The user can
lose control of the pole pruner and be seri‐
ously injured.
► Always hold your pole pruner 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.
0458-698-0121-B
► Use a guide bar with a narrow radius nose.
► Always cut with the chain running at full
speed.
4.8.2 Pull-In
The pole pruner 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 pole pru‐
ner is abruptly jerked away from the operator.
The user can lose control of the pole pruner
and be seriously injured.
► Always hold your pole pruner firmly with
both hands.
► Use the working techniques described in
this instruction manual.
► Keep the guide bar straight in the cut.
► Apply the stop properly.
► Always cut with the chain running at full
speed.
4.8.3 Pushback
The pole pruner is pushed back toward the oper‐
ator 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 pole pru‐
ner is abruptly pushed back toward the opera‐
tor. The user can lose control of the pole pru‐
ner and be seriously injured.
► Always hold your pole pruner firmly with
both hands.
English
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