Working With The Chain Saw - Makita GCU04 Manual De Instrucciones

After refilling, hold the chain saw away from the tree. Start
it and wait until lubrication on saw chain is adequate.
Fig.21

Working with the chain saw

CAUTION:
The first time user should, as a
minimum practice, do cutting logs on a saw-horse
or cradle.
CAUTION:
When sawing precut timber, use a
safe support (saw horse or cradle). Do not steady
the workpiece with your foot, and do not allow
anyone else to hold or steady it.
CAUTION:
Secure round pieces against
rotation.
CAUTION:
Keep all parts of the body away
from the saw chain when the motor is operating.
CAUTION:
Hold the chain saw firmly with
both hands when the motor is running.
CAUTION:
Do not overreach. Keep proper
footing and balance at all times.
CAUTION:
When you use the upper side of
the guide bar for cutting, be careful since the
chain saw may be pushed in your direction if the
saw chain is trapped.
NOTICE:
Never toss or drop the tool.
NOTICE:
Do not cover the vents of the tool.
NOTICE:
When making several cuts, switch the
chain saw off between cuts.
Felling a tree
CAUTION:
Felling work may only be per-
formed by trained persons. The work is hazardous.
When cross-cutting/bucking and felling operations are
being performed by two or more persons at the same
time, the felling operations should be separated from
the crosscutting/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 utility line or cause any property
damage. If the tree does make contact with any utility
line, the company should be notified immediately.
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.
An escape path should be planned and cleared as nec-
essary before cuts are started. The escape path should
extend back and diagonally to the rear of the expected
line of fall as illustrated.
3
Fig.22
► 1. Felling direction 2. Danger zone 3. Escape route
Before felling is started, consider the natural lean of the
tree, the location of larger branches and the wind direc-
tion to judge which way the tree will fall.
Remove dirt, stones, loose bark, nails, staples and wire
from the tree.
Notching undercut and felling back cut
CAUTION:
Do not cut the hinge under any
circumstances. The tree may fall unexpectedly.
NOTICE:
Use plastic or aluminum wedges to
keep the back cut open. Do not use iron wedges.
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4
Fig.23
► 1. 50 mm (2") 2. Felling back cut 3. Hinge 4. Notch
5. Direction of fall
Make the notch 1/3 the diameter of the tree, perpen-
dicular to the direction of falls as illustrated. Make the
lower horizontal notching cut first. This will help to avoid
pinching either the saw chain or the guide bar when the
second notch is being made.
Make the felling back cut at least 50 mm (2") higher
than the horizontal notching cut as illustrated. Keep the
felling back cut parallel to the horizontal notching cut.
Make the felling back cut so enough wood is left to act
as a hinge. The hinge wood keeps the tree from twisting
and falling in the wrong direction. Do not cut through
the hinge.
14 ENGLISH
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