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8
Instructions concerning the proper
techniques for basic felling, limbing, and
cross-cutting.
1. Felling a tree
When bucking and felling operations are
being performed by two or more persons at
the same time, the felling operations should
be separated from the bucking operation
by a distance of at least twice the height
of the tree being felled. Trees should not
be felled in a manner that would endanger
any person, strike any utility line or cause
any property damage. If the tree does make
contact with any utility line, the company
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The chainsaw operator should keep on the
uphill side of the terrain as the tree is likely
to roll or slide downhill after it is felled.
An escape path should be planned and
cleared as necessary before cuts are
started. The escape path should extend back
and diagonally to the rear of the expected
line of fall as illustrated in Figure 2.
Before felling is started, consider the natural
lean of the tree, the location of larger
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which way the tree will fall.
Remove dirt, stones, loose bark, nails,
staples and wire from the tree.
2. Notching undercut
Make the notch 1/3 the diameter of the
tree, perpendicular to the direction of falls
as illustrated in Figure 2. Make the lower
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help to avoid pinching either the saw chain
or the guide bar when the second notch (X)
is being made.
3. Felling back cut
Make the felling back cut (Y) at least 2” (5
cm) higher than the horizontal notching cut
as illustrated in Figure 2. 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 gets close to the hinge, the tree
should begin to fall. If there is any chance
that the tree may not fall in 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 aluminium (Z) to open the cut and drop
the tree along the desired line of fall (
).
When the tree begins to fall, remove the
chainsaw from the cut, stop the motor, put
the chainsaw down, then use the retreat path
planned (
). Be alert for overhead limbs
falling and watch your footing.
3
2
2
W
Y
Z
X
2˝ (5 cm)
1
1
1
2˝ (5 cm)
2˝ (5 cm)
Figure 2
4. Limbing a tree
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
as illustrated in Figure 3. Branches under
tension should be cut from the bottom up to
avoid binding the chainsaw.
General Safety Rules
