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•
Release
the throttle trigger as soon as
the cut is completed,
allowthg
the en-
gine to idle. If you run the saw at full
throttle without a cutting load, unneces-
sary wear can occur to the chain, bar
and engine.
•
To avoid losing controlwhen
cut is com-
plete, do not put pressure
on saw at end
of cut.
• Stop the engine before setting the saw down.
TREE
FELLING
TECHNIQUES
_kWARNING:
Check forbroken ordead
branches
which can fail while cutting causing
serious
injury.
Do not cut near buildings
or
electrical wires if you do not know the direction
of tree fall, at night since you will not be able to
see well, or during bad weather such as rain,
snow, or strong winds, etc. If tree makes con-
tact with
any utility line, the utility company
should be notified immediately.
• Carefully
plan your sawing operation
in ad-
vance.
• Cleartheworkarea.
You needac]eararea
all around the tree so you can have secure
footing.
• 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.
• Study the natural conditions that can cause
the tree to fall in a padicu]ar direction.
Natural conditions
that can cause a tree to
fa]l Jn a particular
direction
include:
• The wind direction
and speed.
• The ]ean of the tree. The lean of a tree
might
not be apparent
due to uneven
or
sloping terrain.
Use a plumb or leve] to de-
termine the direction
of tree lean.
• Weight
and branches
on one side.
• Surrounding
trees and obstacles.
Look for decay and rot. If the trunk is rotted, it
can snap and fail toward the operator.
Make sure there is enough room for the tree to
fall. Maintain
a distance
of 2-1/2 tree lengths
from the nearest person or other objects. En-
gine nc4se can drown out a warning call.
Remove dirt, stones, loose bark, nails, staples,
and wire from the tree where cuts are to be
made.
Plan a clear retreat path to the rear and diago-
nal to the line of fall.
Plan a clear retreat
path
:t ÷- "£_"
_
- Direction
of Fall
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 us-
ing saw to remove buttress
roots, keep saw
chain from contacting
ground to prevent dull-
ing of the chain.
NOTCH CUT AND FELLING THE
TREE
• Make
notch cut by cutting
the top of the
notch first. Cut through
1/3 of the diameter
ofthetree.
Next complete
the notch bycut-
ting the bottom of the notch.
See illustra-
tion.
Once
the notch
is cut remove
the
notch of wood from the tree.
Final cut here 2 inches
above center of notch.
First cut
_
,2'I
Notch_h
- .....
=
Second
out
• After
removing
the wood from the notch,
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 fell] ng cut and the notch
toform
a hinge. This hinge will help prevent
the tree from falling
in the wrong direction.
Hinge holds tree on stump and helps
control fall
_\
\_'_
Opening
of felling
cut
Closing
of_/_,J_
1_
notch
NOTE:
Before
felling
cut is complete,
use
wedges
to open
the cut if necessary
to
controt the direction
of fall To avoid kickback
and chain
damage,
use
wood
or
plastic
wedges,
but never steel or iron wedges.
• Be alert to signs that the tree is ready to
fall: cracking
sounds, widening
of the fell-
ing
cut,
or
movement
in
the
upper
branches.
• As tree starts to fall, stop saw, put it down,
and get away quickly
on your planned re-
treat path.
• DO NOT cut down a partially
fallen tree
with your saw. Be extremely
cautious with
partially
fallen
trees that may
be poorly
supported.
When a tree doesn't fall com-
pletely, set the saw aside and pull down the
tree with a cable winch,
block and tackle,
or tractor.
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