Ryobi RCS1835 Manuel D'utilisation page 22

Deutsch (Übersetzung der originalen Anleitungen)
utility 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
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
expected line of fall as illustrated in Fig. 9.
Before felling is started, consider the natural lean of
the tree, the location of larger branches and the wind
direction to judge which may the tree will fall.
Remove dirt, stones, loose bark, nails, stapes and
wire from the tree.
„
Notching undercut (A notch cut in a tree to direct the
fall) (Fig.10)
Make the notch 1/3 the diameter of the tree,
perpendicular to the direction of falls. Make the lower
horizontal notching cut first, this will help to avoid
pinching of either the saw chain or the guide bar
when the second notch is being made.
„
Felling back cut (the final cut in a tree felling
operation, made on the opposite side of the tree from
the notching undercut) (Fig.10)
Make the felling back cut at least 50mm 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 cut gets close to the hinge,
the tree should begin to fall. If there is any chance
that the tree may not fall in the 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 aluminium to open the cut
and drop the tree along the desired line off all. When
the tree begins to fall remove the chain saw from the
cut, 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.
„
Limbing a tree (Fig.11)
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. Branches under tension should be cut from the
bottom up, to avoid binging the chain saw.
English (Original instructions)
20
„
Bucking a log (Fig.12-15) 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 direction for easy cutting:
a) When the log is supported along the entire length, it
is cut from the top (overbuck). (Fig.12)
b) When the log is supported on one end, cut 1/3 of the
diameter from the underside (underbuck). Then make
the finished cut by overbucking to meeting the first
cut. (Fig.13)
c) When the log is supported on both ends, cut 1/3 of
that diameter from the top(overbuck). Then make the
finished cut by underbucking the lower 2/3 to meet
the first cut. (Fig.14)
d) When bucking on a slope always stand on the uphill
side of the log. 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. (Fig.15).
Do not 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.
MAINTENANCE
(Fig. 16-21)
Chain Sharpening
When the chain penetrates into wood with difficultly, it
needs sharpening as follows:
„
Put the chain under tension.
„
Fasten the bar in a vice so that the chain can slide.
„
Fasten the file to the file holder and place it on cutter
at a 35° angle.
„
File with forward strokes only until all the worn out
part of the cutting edge is taken away.
„
Count the number of strokes given to the cutter taken
as a reference basis and file away for the same
number of strokes on all other cutters.
„
If after sharpening a few times, the depth gauge
protrudes from the template, you must reset its level
use a flat file.
„
Finally, round off the depth gauge.
127( We advise you to have the deep or important