Chain Sharpening; Guide Bar Maintenance - Ryobi RCS1835 Manuel D'utilisation

GB
F D E I
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
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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 aluminum 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)
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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.
Bucking a log (The process of cross cutting a felled
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tree or log into lengths) (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
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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 chainsaw 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 chainsaw. 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.
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Fasten the bar in a vice so that the chain can slide.
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Fasten the file to the file holder and place it on cutter
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at a 35° angle.
File with forward strokes only until all the worn out
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part of the cutting edge is taken away.
Count the number of strokes given to the cutter taken
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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 guage
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protrudes from the template, you must reset its level
use a flat file.
Finally, round off the depth guage .
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NOTE: We advise you to have the deep or important
sharpening carried out by a service agent who is
equipped with electric sharpener.

GUIDE BAR MAINTENANCE

When you have finished working, clean out the groove
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and the oil passages, with a scraping hook.
Periodically trim the sides of rails using a flat file.
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If not done in the long run, the featheredges might
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break away and damage the bar.
If one rail is higher than the other one, it is necessary
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to make it even with a flat file and then smooth them
with a file or fine grain abrasive paper.
Filling in the chain oil
To prevent dirt getting inside the tank, clean the oil tank
cap before opening. Check the contents of the oil tank
during sawing work by checking the oil gauge. Close the
oil tank cap tightly and wipe away any spills .
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LV SK BG