Pushback; Proper Techniques For Basic Bucking, Limbing; Pruning And Felling; Intended Uses - Stihl MSA 220 C Manual De Instrucciones

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7.4

Pushback

WARNING
￭ Pushback occurs when the chain on the top of the bar is
suddenly stopped or significantly slowed when it is
pinched, caught or encounters a foreign object in the
wood. The reaction of the chain may drive the saw rapidly
straight back toward the operator, causing loss of control
which, in turn, may cause serious or fatal injury.
￭ Pushback usually occurs when the top of the bar is used
for cutting.
￭ To reduce the risk of pushback:
– Be alert to forces or situations that may cause
material to pinch or bind the top of the chain.
– Do not cut more than one log at a time.
– Do not twist the chain saw when withdrawing the bar
from an underbuck cut because the chain can pinch
or bind.
– Cut with a sharp, properly tensioned chain.
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8 Proper Techniques for Basic Bucking, Limbing, Pruning and Felling
8 Proper Techniques for Basic Bucking,
Limbing, Pruning and Felling
8.1

Intended Uses

WARNING
￭ This chain saw is not designed for felling large trees or
cutting large diameter logs.
￭ For cutting larger trees, logs or branches, a larger, more
powerful and faster saw may be necessary to reduce the
risk of binding, stalling or a change in conditions during
longer cutting times. Interruption of cutting speeds or a
loss of power during a felling or limbing operation can
result in an inability to control the fall of a tree or limb, and
can lead to serious or fatal personal injury.
￭ Before starting any felling, limbing, bucking or pruning
operation, fully charge your battery.
￭ Before starting any bucking, limbing, pruning or felling
operation, ensure that all necessary cuts can be
completed using the charge remaining battery. If you are
unsure:
– Have multiple charged batteries available for use;
– Select a more powerful chain saw;
– Select a more powerful battery; or
– Consult a reputable tree removal professional.
￭ Position the chain saw in such a way that your body is
clear of the cutting attachment whenever the motor is
running. Stand to the left of the cut while bucking, outside
of the cutting plane.
8.2

Bucking

Bucking is cutting a log into sections.
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