Stihl 038 - Pushback; Pull-in; To avoid pushback; To avoid pull-in

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Pushback:
Pushback occurs when the chain on the
top of the bar is suddenly stopped when
itis pinched, caught or encounters a
foreign object in the wood. The reaction
of the chain drives the saw straight back
toward the operator and may cause loss
of saw control. Pushback frequently
occurs when the top of the bar is used for
cutting.
To avoid pushback
1. Be alert to forces or situations that
may cause material to pinch the top of
the chain.
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Pullin frequently occurs when the
bumper spike of the saw is not held
securely against the tree or limb and
when the chain is not rotating at full
speed before it contacts the wood.
Warning!
Use extreme caution when cutting small
size brush and saplings which may easily
catch the chain and pull you off balance.
To avoid pull-in
1. Always start a cut with the chain
rotating at full speed and the bumper
spike in contact with the wood.
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2. Pull-in may also be prevented by
using wedges to open the kerf or cut.
2, Donotcut more than one log at a time.
3. Do not twist the saw when withdrawing
the bar from a plunge cut or underbuck
cut because the chain can pinch.
Pull-in:
Pull-in occurs when the chain on the
bottom of the bar is suddenly stopped.
The chain of the bottom of the bar
stops when it is pinched, caught or
encounters a foreign object in the wood.
The reaction of the chain pulls the saw
forward and may cause the operator to
lose control.