Publicidad
Idiomas disponibles
Idiomas disponibles
, Look for decay and roL If the trunk is
rotted, it can snap and fall 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,. Motor 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.
_'_e_.e_
Plan a clear retreat path
:t..... L
)_'"=_=_"
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 desired direction
of fall. Af-
ter a felling cut is made on the oppo-
site side of tree, the tree will tend to
fall in the direction
of the notch.
NOTE: if 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 prevent dulling of the chain.
NOTCH CUT AND FELLING
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 cutting the bottom° See
ilIustration
Once notch is cut, remove
the wedge of wood from the tree.
Final cut here
Z "i
Firstcut
t
/
Second -J_"
.
• After removing the wood from the
notch, make the felling cut on the op-
posite 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..
Hinge
holds tree on stump
and
helps control fal_l.
Opening
of felling
Closing of
notch
9
NOTE: Before felling cut is complete,
use wedges to open the cut when
necessary
to control the direction
of
fall. To avoid kickback
and chain
damage, use wood or plastic wedges,
but never steel or iron wedges.
o Be alert to signs that the tree is ready
to fail: cracking sounds, widening
of
the felling cut, or movement in the up-
per branches.
o As tree starts to fall, stop saw, put it
down, and get away quickly on your
planned retreat path°
° DO NOT use your saw to cut down a
partially fallen tree° Be extremely cau-
tious with partially fallen trees that
may be poorly supported.
When a
tree doesn't fall completely,
set saw
aside and pull down tree with a cable
winch, block and tackle, or tractor..
CUTTING
A FALLEN TREE
(BUCKING)
Bucking is the term used for cutting a
fallen tree to the desired fog size
WARNING:
Do not stand on the
log being cut. Any portion can roll
causing loss of footing and control° Do
not stand downhill
of the log being cut
IMPORTANT
POINTS
o Cut only one tog at a time.
, Cut shattered wood very carefully;
sharp pieces of wood could be flung
toward operator..
• Use a sawhorse I_ cut small logs.
Never allow another person to hold
the log while ct_i_ng and never hold
the log with your leg or foot.
• Do not cut in an area where logs,
limbs, and roots are tangled. Drag
logs into a clear area before cutting
them by pulling out exposed or
cleared logs first..
BUCKING
TECHNIQUES
WARNING:
if saw becomes
pinched
or hung in a log, don't try to
force it out.. You ca:n lose control of the
saw, resulting
in iniury and/or damage
to the saw+ Stop the saw; drive a
Publicidad
