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Felling Trees (cont.)
Felling Larger Trees
(Over 6" diameter)
If a tree is otherwise healthy and not
seriously out of balance, its direction
of fall can often be encouraged by first
"notching" the tree on the side facing the
desired direction of fall.
After the notch is completed, start the
felling cut slightly higher and on the
opposite side of the tree, away from the
direction of fall.
The goal of the method is to leave a
sturdy wooden "hinge" for the tree to
pivot on while falling.
1. Determine the direction of fall.
. On the side of the tree facing the
direction of fall, make a single 90
cut through approx. 1/3 of the tree's
diameter.
3. Working from the same side of the
o
tree and at a 45
angle to the first cut,
make your second cut in an upward
direction to remove a notch from the
tree as shown.
Bucking
Techniques
If the log is well supported, start your
cut from the top of the log. Keeping
the guide bar parallel to the ground,
cut straight down but do not allow the
saw to cut into the ground.
Cutting downed timber, or "bucking,"
increases the possibility of the wood
settling and pinching the guide bar.
Driving one or more soft plastic or
wooden bucking wedges can help
prevent bar-pinching during a cut.
Use two cuts when bucking near the
inboard end of an unsupported log.
1. Make the first cut as an overbuck
approx. 1/3 the diameter of the log.
. Finish the job with an underbuck
coming up from beneath and joining
the first cut.
First Cut
Second Cut
15
4. Working on the opposite side of the
tree and starting approximately "
higher than the bottom of the notch
created in steps 1-3, make the final
felling cut as shown.
NOTE:
If the cut appears to be closing on the bar,
use a mallet to drive one or two plastic or
wooden wedges into the cut behind the bar.
5. Stop the saw, and put it down.
6. Use your retreat path to exit the area
quickly.
o
Direction of
Fall
Notch
WARNING!
Always cut downed timber from the
uphill side of the wood! Be alert for
potential injury from rolling or shift-
ing logs! Downed timber may shift or
roll unpredictably during cutting or
handling operations!
Use two cuts when bucking the
outboard end of an unsupported
log. Your first cut should be an
underbuck, cutting upward through
approximately 1/3 the diameter of
the tree. Finally, move to the top of
the log and finish the cut by bucking
down (overbucking) to your first cut.
Second Cut (overbuck)
First Cut (underbuck)
About 1/3 of Tree Diameter
WARNING!
Failure to leave a proper wooden
hinge during the falling or "back
cut" can cause the tree to pinch
the saw's guide bar, and may also
change the direction of fall!
WARNING!
Always make your falling cut parallel
to the bottom cut! An angled falling
cut may cause the tree to split, pos-
sibly changing the direction of fall!
Hinge
Felling
Cut
Limbing
Limbing a standing tree is usually ac-
complished in the same manner as buck-
ing, with a third and final cut used to
remove the remaining stub of the limb.
WARNING!
Kickback danger increases in over-
height or out of position cutting!
Do not overreach or attempt to cut
above shoulder height!
When cutting unsupported logs or limbs,
starting with an underbuck cut will mini-
mize the possibility of the wood splitting
during the bucking cut.
3
2
1
NOTE:
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