Idiomas disponibles
Idiomas disponibles
OPERATION
Keep a clear cutting area. Make sure that no
objects can contact the guide bar nose and
chain during cutting, this can cause kickback.
When bucking on a slope, always stand on the
uphill side of the log. To maintain complete
control of the chain saw when cutting through
the log, release the cutting pressure near the
end of the cut without relaxing your grip on the
chain saw handles. 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.
Sometimes it is impossible to avoid pinching
(with just standard cutting techniques) or diffi-
cult to predict which way a log will settle when
cut. To avoid pinching while cutting, rotate or
move the log so that the pinch is eliminated.
Bucking Logs Under Stress
See Figures 21 - 23.
When the log is supported along its entire length,
it should be cut from the top or overbucking.
When the log is supported on one end, cut 1/3
the diameter from the underside or underbuck-
ing. Then make the finishing cut by overbucking
to meet the first cut.
As the log is being cut, it will tend to bend. The
saw can become pinched or hung in the log if you
make the first cut deeper than 1/3 of the diameter
of the log.
Give special attention to logs under stress to pre-
vent the bar and chain from pinching.
When bucking on a slope, always stand on the
uphill side of the log as shown in figure 20. When
"cutting through," to maintain complete control
of the chain saw, release the cutting pressure near
the end of the cut without relaxing your grip on the
chain saw handles. 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.
OVERBUCKING
UNDERBUCKING
1
CUT LIMBS ONE AT A TIME AND LEAVE SUPPORT LIMBS
UNDER TREE UNTIL LOG IS CUT
Types of Cutting Used
See Figure 22.
Overbucking
Begin on the top side of the log with the bottom
of the saw against the log; exert light pressure
downward. Note that the saw will tend to pull
away from you.
Underbucking
Begin on the under side of the log with the top
of the saw against the log; exert light pressure
upward. During underbucking, the saw will tend
to push back at you. Be prepared for this reaction
and hold the saw firmly to maintain control.
English
Fig. 22
3
2
4
Fig. 23
21
