Worx WG300E Manuel D'utilisation page 17

with the motor running. use wooden
wedges to free chain and guide bar.
When cutting and felling operations are being
performed by two or more persons, at the
same time, the felling operations should be
separated from the cutting operation by a
distance of at least twice the height of the
tree being felled. Trees should not be felled in
a manner that would endanger any person,
strike any utility line or cause any property
damage. If the tree does make contact with
any utility line, the company should be
notified immediately.
The chain saw operator should keep on the
uphill side of the terrain as the tree is likely to
roll or slide downhill after it is felled.
An escape path should be planned and
cleared as necessary before cuts are started.
The escape path should extend back and
diagonally to the rear of the expected line of
fall.
Before felling is started, consider the
natural lean of the tree, the location of larger
branches and the wind direction to judge
which way the tree will fall.
Remove dirt, stones, loose bark, nails staples,
and wire from the tree.
Notching undercut: Make the notch (x-w)1/3
the diameter of the tree, perpendicular to the
direction of falls as make the lower horizontal
notching cut first. This will help to avoid
pinching either the saw chain or the guide bar
when the second notch is being made.
Felling back cut: make the felling back
cut(Y)at least 50 mm higher than the
horizontal notching cut. Keep the felling back
cut parallel to the horizontal notching cut.
Make the felling back cut so enough wood is
left to act as a hinge. The hinge wood keeps
the tree from twisting and falling in the wrong
direction. Do not cut through the hinge.
As the felling gets close to the hinge the tree
should begin to fall. If there is any chance
that the tree may not fall in desired direction
or it may rock back and bind the saw chain,
stop cutting before the felling back cut is
complete and use wedges of wood, plastic, or
aluminum to open the cut and drop the tree
along the desired line of fall.
When the tree begins to fall remove the chain
Chain saw
saw from the cutting, stop the motor, put the
chain saw down, and then use the retreat path
planned. Be alert for overhead limbs falling
and watch your footing.
To complete the felling operation, drive a
wedge (Z) into the horizontal cut.
Beware of falling branches when the tree
starts to move.
Limbing a tree (See Fig. N)
Limbing is removing the branches from a
fallen tree. When limbing leave larger lower
limbs to support the log off the ground.
Remove the small limbs in one cut as
illustrated. Branches under tension should be
cut from the bottom up to avoid binding the
chain saw.
Bucking a log (See Fig. O)
Bucking is cutting a log into lengths. It is
important to make sure your footing is firm
and your weight is evenly distributed on both
feet. When possible, the log should be raised
and supported by the use of limbs, logs or
chocks. Follow the simple directions for easy
cutting.
When the log is supported along its entire as
illustrated, it is cut from the top (overbuck).
When the log is supported on one end,
as illustrated, cut 1/3 the diameter from
the underside (underbuck). Then make the
finished cut by overbucking to meet the first
cut. (See Fig. P)
When the log is supported on both ends,
as illustrated, cut 1/3 the diameter from the
top overbuck. Then make the finished cut by
underbucking the lower 2/3 to meet the first
cut. (See Fig. Q)
When bucking on a slope always stand on
the uphill side of the log, as illustrated. When
"cutting through" , to maintain complete
control release the cutting pressure near the
end of the cut without relaxing your grip on
the chain saw handles. Don't let the chain
contact the ground. After completing the cut,
wait for the saw chain to stop before you
move the chain saw. Always stop the motor
before moving from tree to tree. (See Fig. R)
17 17
En