Idiomas disponibles
Idiomas disponibles
„ Always cut with both feet on solid ground to prevent
being pulled off balance.
„ Do not cut above chest height, as a saw held higher is
difficult to control against kickback forces.
„ Do not fell trees near electrical wires or buildings. Leave
this operation for professionals.
„ Cut only when visibility and light are adequate for you
to see clearly.
FELLING TREES
See Figures 12 - 15.
HAZARDOUS CONDITIONS
WARNING:
Do not fell trees during periods of high wind or heavy
precipitation. Wait until the hazardous weather has ended.
WARNING:
Closely check for broken or dead branches, which could
fall while cutting and do not cut near buildings or electrical
wires if you do not know the direction of tree fall. Do not
cut at night or during bad weather conditions, such as
rain, snow, or strong winds, which can reduce visibility
and control of the chain saw. If the tree you are felling
makes contact with any utility line, you should discontinue
use of the chain saw and immediately notify the utility
company. Failure to follow these instructions could result
in death or serious personal injury.
When felling a tree, it is very important that you closely follow
these warnings and instructions to prevent possible death
or serious personal injury.
„ Do not cut down trees having an extreme lean or large
trees with rotten limbs, loose bark, or hollow trunks. Have
these trees pushed or dragged down with heavy equip-
ment, then cut them up.
„ Do not cut trees near electrical wires or buildings.
„ Check the tree for damaged or dead branches that could
fall and hit you during felling.
„ Periodically glance at the top of the tree during the
backcut to assure the tree is going to fall in the desired
direction.
„ If the tree starts to fall in the wrong direction, or if the saw
gets caught or hung up during the fall, leave the saw and
save yourself!
„ Felling a tree - When bucking and felling operations are
being performed by two or more persons, at the same
time, the felling operation 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
OPERATION
utility line or cause any property damage. If the tree does
make contact with any utility line, the utility company
should be notified immediately.
„ Before any cuts are started, pick your escape route (or
routes in case the intended route is blocked); clear the im-
mediate area around the tree and make sure there are no
obstructions in your planned path of retreat. Clear paths
of safe retreat should extend back and diagonally (45°) to
the rear of the planned line of fall. When the tree begins
to fall, you should retreat away from the direction of fall
along a retreat path and at least 20 feet away from the
trunk in case it kicks back over the stump. See Figure 12.
„ Before felling is started, consider the force and direction
of the wind, the lean and balance of the tree, and the lo-
cation of large limbs. These things influence the direction
in which the tree will fall. Do not try to fell a tree along a
line different from its natural line of fall.
„ 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.
„ Remove dirt, stones, loose bark, nails, staples, and wire
from the tree where felling cuts are to be made.
„ Notched Undercut. Cut a notch about 1/3 the diameter
of the tree, perpendicular to the direction of fall. Make the
cuts of the notch so they intersect at a right angle to the
line of fall. This notch should be cleaned out to leave a
straight line. To keep the weight of the wood off the saw,
always make the lower cut of the notch before the upper
cut. See Figure 13.
„ Felling Backcut. The backcut is always made level and
horizontal, and at a minimum of 2 in. above the horizontal
cut of the notch. See Figures 13 - 14.
„ Never cut through to the notch. Always leave a band of
wood between the notch and backcut (approximately 2 in.
or 1/10 the diameter of the tree). This is called "hinge" or
"hingewood." It controls the fall of the tree and prevents
slipping or twisting or shoot-back of the tree off the stump.
See Figures 13 - 14.
„ On large diameter trees, stop the back cut before it is
deep enough for the tree to either fall or settle back on
the stump. Then insert soft wooden or plastic wedges
into the cut so they do not touch the chain. The wedges
can be driven in, little by little, to help jack the tree over.
See Figure 15.
„ As tree starts to fall, stop the chain saw and put it down
immediately. Retreat along the cleared path, but watch
the action in case something falls your way. Be alert for
overhead limbs or branches that may fall and watch your
footing.
12 - English
