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Idiomas disponibles
Idiomas disponibles
• Squeeze
the throttle
trigger and a llow
the engine toreach full s peed before
cutting,
• Begin c utting with thesawframe
against
the log,
• Keep the engine
atfull speed the entire
time y ou are cutting.
• Allowthechaintocutforyou.
Exertonly
light downward
pressure,
Ifyou force
the c ut, damage
to the bar, chain, or e n-
gine c an result.
• Release
the throttle
trigger as soon as
the cut i scompleted,
allowing
the en-
gine t oidle. I fyou run the saw atfull
throttle
without
acutting load, unneces-
sary w ear can occur tothe chain, bar,
and e ngine,
It is recommended
that
the engine
not be operated
for lon-
ger than
30 seconds
at full throttle.
•
To avoid losing control when cut is com-
plete, do not put pressure
on saw at end
of cut.
• 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 net 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.
• Carefully
plan your sawing operation
in ad-
vance.
• Clearthework
area, You needa clear area
all around the tree so you can have secure
footing.
• Study the natural conditions that can cause
the tree to fall in a particular direction,
Natural
conditions
that can cause a tree to
fall in a particular
direction
include:
• The wind direction
and speed.
• The lean of the tree.
The lean of a tree
might
net be apparent
due to uneven
or
sloping terrain,
Use a plumb or level 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 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 2-I/2 tree lengths
from the nearest person or other objects.
En-
gine noise 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 diag-
onal to the line of fall.
_
Plan a clear retreat
path
%
(}-._m_.
Direction
of Fall
45 ° /
"_/" e¢
FELLING
LARGE
TREES
(6 inches (15 cm) 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 fail into the notch.
NOTE:
if the tree has large buttress
roots,
remove them before making the notch,
Ifus-
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
of the tree. Next complete
the notch by cut-
ting the bottom
of the notch, See illustra-
tion. Once
the notch
is cut remove
the
notch of wood from the tree.
Final (felling)
cut here, 2 inches
(5 cm) above center
of notch.
First cut
]
,z_;
1
/
=÷ I/
Notet_
__-
_
.........
- 2"
• 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 (5 cm) 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 pre-
vent the tree from falling in the wrong direc-
tion.
Hinge
holds tree on stump and helps
control
fall
Opening
of felling
/
Closing
of
notch
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