Makita UC024G Manual De Instrucciones página 17

Electrosierra inalámbrica
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  • ESPAÑOL, página 80
Saw chain is automatically lubricated when the tool is in
operation. Check the amount of remaining oil in the oil
tank periodically through the oil inspection window.
► Fig.18: 1. Oil tank cap 2. Oil inspection window
To fill the oil, perform the following steps:
1.
Clean the area around the oil tank cap thoroughly
to prevent any dirt from entering the oil tank.
2.
Lay the chain saw on its side.
3.
Push the button on the oil tank cap so that the
button on the other side stands up, and then remove the
oil tank cap by turning it.
► Fig.19: 1. Oil tank cap 2. Tighten 3. Loosen
4.
Fill the oil tank with the oil. The proper amount of
oil is 200 ml.
5.
Screw the oil tank cap firmly back in place.
6.
Wipe away any spilt chain oil carefully.
NOTE: If it is difficult to remove the oil tank cap, insert
the tip of the box wrench into the slot of the oil tank
cap, and then remove the oil tank cap by turning it
counterclockwise.
► Fig.20: 1. Slot 2. Box wrench
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.
Bring the bottom edge of the chain saw body into
contact with the branch to be cut before switching on.
Otherwise it may cause the guide bar to wobble, result-
ing in injury to operator. Saw the wood to be cut by just
moving it down by using the weight of the chain saw.
► Fig.22
If you cannot cut the timber right through with a single stroke:
Apply light pressure to the handle and continue sawing and
draw the chain saw back a little; then apply the spike bumper
a little lower and finish the cut by raising the handle.
► Fig.23
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 cross-cutting/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.
► Fig.24: 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.
► Fig.25: 1. 50 mm 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 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.
As the felling gets close to the hinge, the tree should begin
to fall. If there is any chance that the tree may not fall in
desired direction or it may rock back and bind the saw
chain, stop cutting before the felling back cut is complete
and use wedges of wood, plastic or aluminium to open the
cut and drop the tree along the desired line of fall.
When the tree begins to fall, remove the chain saw
from the cut, stop the motor, put the chain saw down,
then use the retreat path planned. Be alert for overhead
limbs falling and watch your footing.
17 ENGLISH
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