Tree Felling Techniques; Felling Large Trees - Poulan Pro 2750 Operator's Manual

force the cut, damage to the bar,
chain, or engine can result.
Release the throttle trigger as soon as
S
the cut is completed, allowing the en-
gine to idle. If you run the saw at full
throttle without a cutting load, unnec-
essary wear can occur to the chain,
bar, and engine.
To avoid losing control when cut is
S
complete, do not put pressure on saw
at end of cut.
S Stop the engine before setting the saw
down after cutting.

TREE FELLING TECHNIQUES

WARNING:
Check for broken or
dead branches which can fall while cutting
causing serious injury. Do not cut near build-
ings or electrical wires if you do not know the
direction of tree fall, nor cut at night since you
will not be ale to see well, nor during bad
weather such as rain, snow, or strong winds,
etc. If the tree makes contact with any utility
line, the utility company should be notified
immediately.
S Carefully plan your sawing operation in ad-
vance.
S Clear the work area. You need a clear area
all around the tree so you can have secure
footing.
S The chain saw operator should keep on
the uphill side of the terrain as the tree is
likely to roll or slide downhill after it is felled
S Study the natural conditions that can
cause the tree to fall in a particular direc-
tion.
Natural conditions that can cause a tree to
fall in a particular direction include:
S The wind direction and speed.
S The lean of the tree. The lean of a tree
might not be apparent due to uneven or
sloping terrain. Use a plumb or level to de-
termine the direction of tree lean.
S Weight and branches on one side.
S Surrounding trees and obstacles.
Look for decay and rot . If the trunk is rotted,
it can snap and fall toward the operator.
Check for broken or dead branches which
can fall on you while cutting.
Make sure there is enough room for the tree
to fall. Maintain a distance of
lengths from the nearest person or other ob-
jects. Engine noise can drown out a warning
call.
Remove dirt, stones, loose bark, nails, sta-
ples, and wire from the tree where cuts are to
be made.
Plan a clear retreat path to the rear and diag-
onal to the line of fall.
Plan a clear retreat path
45_

FELLING LARGE TREES

(6 inches in diameter or larger)
The notch method is used to fell large trees.
A notch is cut on the side of the tree in the de-
sired direction of fall. After a felling cut is
made on the opposite side of tree, the tree
will tend to fall into the notch.
NOTE:
If the tree has large buttress roots,
remove them before making the notch. If
using saw to remove buttress roots, keep
saw chain from contacting ground to pre-
vent dulling of the chain.
NOTCH CUT AND FELLING THE
TREE
S Make notch cut by cutting the top of the
notch first. Cut through
of the tree. Next complete the notch by cut-
ting the bottom of the notch. See illus-
trated. Once the notch is cut remove the
notch of wood from the tree.
Final (felling) cut here. 2 inches
First cut
Notch
Second cut
tree
2-1/2
S After removing the cutout of wood, make
the felling cut on the opposite side of the
notch. This is done by making a cut about
two inches higher than the center of the
notch. This will leave enough uncut wood
between the felling cut and the notch to
form a hinge. This hinge will help prevent
the tree from falling in the wrong direction.
10
Direction of Fall
of the diameter
1/3
above center of notch.
Hinge