Publicité
7 Proper Techniques for Basic Bucking, Limbing, Pruning and Felling
6.4
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 encoun‐
ters a foreign object in the wood. The reaction
of the chain may drive the saw rapidly straight
back toward the operator, causing loss of con‐
trol 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 withdraw‐
ing the bar from an underbuck cut because
the chain can pinch or bind.
► Cut with a sharp, properly tensioned chain.
7
Proper Techniques for
Basic Bucking, Limbing,
Pruning and Felling
7.1
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, stall‐
ing 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 seri‐
ous or fatal personal injury.
■ Before starting any felling, limbing, bucking or
pruning operation, fully charge your STIHL AK
battery.
0458-022-8201-A
■ Before starting any bucking, limbing, pruning
or felling operation, ensure that all necessary
cuts can be completed using the charge
remaining in the STIHL AK series 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 professio‐
nal.
■ Position the chain saw in such a way that your
body is clear of the cutting attachment when‐
ever the motor is running. Stand to the left of
the cut while bucking, outside of the cutting
plane.
7.2
Bucking
Bucking is cutting a log into sections.
WARNING
■ Be aware of rolling logs. Rolling logs can
cause serious or fatal personal injury. To pre‐
vent a log from rolling while bucking:
► Make sure the log is secure and will not roll
downhill before starting your cut. If neces‐
sary, use sturdy wedges, shims or chocks.
► If on a slope, always stand on the uphill
side of the log.
► Never stand on the log.
■ To reduce the risk of kickback caused by con‐
tacting the nose of the guide bar with other
logs or limbs:
► Cut only one log at a time.
► Do not cut logs in a pile.
■ When cutting splintered wood, sharp slivers of
wood may be caught and flung in the direction
of the operator of the saw or bystanders.
► Use caution when cutting splintered wood
and always wear appropriate apparel and
personal protective equipment, including
eye protection.
► Keep bystanders out of the work area.
English
15
Publicité
