Stihl MS 381 Instruction Manual page 9

English
A = Pull-in
Pull-in occurs when the chain on the
bottom of the bar is suddenly pinched,
caught or encounters a foreign object in
the wood. The reaction of the chain pulls
the saw forward.
Always hold the spiked bumper
securely against the tree or limb.
8
B = Pushback
A
Pushback occurs when the chain on the
top of the bar is suddenly pinched,
caught or encounters a foreign object in
the wood. The reaction of the chain
drives the saw straight back toward the
operator.
To avoid pushback:
– Be alert to situations that may cause
the top of the guide bar to be
pinched.
– Do not twist the guide bar in the cut.
Exercise extreme caution:
– with leaners
– with trees that have fallen
unfavorably between other trees
and are under strain
– when working in blowdown areas.
Do not work with the chainsaw in such
circumstances. Use block and tackle,
B
cable winch or tractor.
Pull out exposed and cleared logs.
Select clear area for cutting.
Deadwood (dry, decayed or rotted
wood) represents a considerable risk
that is difficult to assess. Identifying the
extent of the dangers is complicated, if
not impossible. Use aids such as a cable
winch or tractor in such cases.
When felling in the vicinity of roads,
railways, power lines, etc., take extra
precautions. If necessary, inform the
police, utility company or railway
authority
MS 381