Sharpening Of The Chain Blade - Hitachi CS 40Y Instruction Manual

Follow the simple directions for easy cutting.
When the log is supported along its entire length as
shown in Fig. 23, it is cut from the top (overbuck).
Fig. 23
When the log is supported on one end, as shown
in Fig. 24, cut 1/3 the diameter from the underside
(underbuck). Then make the fi nished cut by
overbucking to meet the fi rst cut.
2nd cut overbuck (2/3 diameter) to
meet 1st cut (to avoid pinching)
1st cut underbuck (1/3 diameter)
to avoid splintering
Fig. 24
When the log is supported on both ends, as shown in
Fig. 25, cut 1/3 the diameter from the top (overbuck).
Then make the fi nished cut by underbucking the lower
2/3 to meet the fi rst cut.
1st cut underbuck (1/3 diameter)
to avoid splintering
2nd cut overbuck (2/3 diameter) to
meet 1st cut (to avoid pinching)
Fig. 25
Cut from top (overbuck)
avoid cutting earth
CAUTION
● Ensure the guide bar does not become bound in
the log by pressure.
● When working on inclined ground, be sure to
stand on the uphill side of the log. If you stand on
the downhill side, the cut-off log may roll toward
you.
When bucking on a slope always stand on the uphill
side of the log, as shown in Fig. 26. 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.
Fig. 26
SHARPENING OF THE CHAIN
BLADE
CAUTION
Ensure the power source has been disconnected
from the tool before performing the steps below.
Wear gloves to protect your hands.
Dull and worn chain blades will decrease the
effi ciency of the tool and place unnecessary
overload on the motor and various parts of the
machine. In order to maintain optimum effi ciency,
it is necessary to check the chain blades often and
keep them properly sharpened and adjusted. Blade
sharpening and depth gauge adjustment should be
accomplished at the center of the guide bar, with the
chain properly mounted to the machine.
English
Stand uphill side when cutting
because log may roll
17