-- 10 --
FELLING CUT:
WARNING:
Before making the final
cut, always recheck the area for bystanders,
animals or obstacles.
Bucking is cutting a fallen log into lengths.
Make sure you have a good footing and
stand uphill of the log when cutting on
sloping ground. If possible, the log should
be supported so that the end to be cut off is
not resting on the ground. If the log is
supported at both ends and you must cut in
the middle, make a downward cut halfway
through the log and then make the
undercut. This will prevent the log from
pinching the bar and chain. Be careful that
the chain does not cut into the ground when
bucking as this causes rapid dulling of the
chain.
When bucking on a slope, always stand on
the uphill side.
1. Use wooden or plastic wedges (A) to
prevent binding the bar or chain (B) in the
cut. Wedges also control felling
(Fig.11C).
2. When diameter of wood being cut is
greater than the bar length, make 2 cuts
as shown (Fig.11D).
1. Log supported along entire length: Cut
from top (overbuck), being careful to
avoid cutting into theground (Fig.13A).
2. Log supported on 1 end: First, cut from
bottom (underbuck) 1/3 diameter of log to
avoid splintering. Second, cut from above
(overbuck) to meet first cut and avoid
pinching (Fig.13B).
3. Log supported on both ends: First,
overbuck 1/3 diameter of log to avoid
splintering. Second, underbuck to meet
first cut and avoid pinching (Fig.13C).
NOTE:
The best way to hold a log while
bucking is to use a sawhorse. When this is
not possible, the log should be raised and
supported by the limb stumps or by using
supporting logs. Be sure the log being cut is
securely supported.
A. Hold the saw firmly with both hands and
keep the saw to the right of your body
while cutting.
B. Keep the left arm as straight as possible.
C. Keep weight on both feet.
Limbing a tree is the process of removing
the branches from a fallen tree. Do not
remove supporting limbs (A) until after the
log is bucked (cut) into lengths (Fig.12).
Br
anches under tension should be cut from
the bottom up to avoid binding the chain
saw.
For personal safety and ease of cutting, the
correct position for vertical bucking is
essential (Fig.14).
WARNING:
As the felling cut gets
close to the hinge, the tree should begin to
fall. When tree begins to fall, remove saw
from cut, stop engine, put chain saw down,
and leave area along retreat path (Fig.11A).
WARNING:
Never cut tree limbs
while standing on tree trunk.
CAUTION:
While the saw is cutting,
be sure the chain and bar are being properly
lubricated.
Fig. 11D
Fig. 11C
A
B
LIMBING
Fig. 12
Fig. 13B
Fig. 13A
Fig. 13C
BUCKING
BUCKING USING A SAWHORSE
VERTICAL CUTTING:
Fig. 14
B
A
A
C
600mm
