Stihl MSA 300.0 Notice D'emploi page 15

7 Proper Techniques for Basic Bucking, Limbing, Pruning and Felling
6.3 Pull-in
WARNING
■ Pull-in occurs when the chain on the bottom 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 pulls the saw forward and may
cause the operator to lose control, which, in
turn, may cause serious or fatal injury. If the
tip contacts an object, kickback may occur.
■ Pull-in usually 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.
■ To reduce the risk of pull-in:
► Cut with a sharp, properly tensioned chain.
► Always start a cut with the chain rotating at
full speed and with the bumper spike in
contact with the wood.
► Use wedges to open the kerf or cut, where
possible.
► Use extreme caution when cutting small-
size brush and saplings which may easily
catch the chain, spring towards you or pull
you off balance.
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‐
0458-009-8202-B
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
■ 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 battery.
■ Before starting any bucking, limbing, pruning
or felling operation, ensure that all necessary
cuts can be completed using the battery's
remaining charge. 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.
English
15