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9.5
OPERATE THE CHAIN BRAKE
WARNING
Make sure that your hands are on the handles at all times.
Figure 23.
1. Start the machine.
2. Turn your left hand around the front handle to engage the
chain brake.
3. Pull the front hand guard / chain brake toward the front
handle to disengage the chain brake.
4. Call approved your dealer for repair before use if
•
The chain brake does not stop the chain immediately.
•
The chain brake does not stay in the disengaged
position without aid.
9.6
NON-MANUAL CHAIN BRAKE
Figure 24.
IMPORTANT
When checking the operation of the non-manual chain
brake, use a soft surface substance like wood to provide the
impact so the saw chain is not damaged.
1. End of the guide bar may be placed at the height about 70
cm.
2. Rear handle should be gripped lightly with the right hand.
The non-manual chain brake stops the operation of the saw
chain in such a manner that the kickback action produced at
the end of the guide bar non-manually actuates the chain
brake. To make sure that the non-manual chain brake operates
properly, proceed as follows:
1. Stop the machine.
2. Operate the front and rear handles with hands (grip them
lightly), so that the guide bar may be placed at the height
of about 70 cm as shown in Fig.
3. Softly detach the left hand from the front handle, and
touch the end of the guide bar against the wood or the like
placed below so that the machine receives an impact. (*
at this time the rear handle should be gripped lightly with
right hand)
4. The impact is transferred to the brake lever, which
actuates the chain brake.
10
CUTTING INSTRUCTION
DANGER
Do not let the nose or tip of the guide bar touch anything
while unit is running to avoid kickback.
10.1
GENERAL
Figure 8-9.
English (Original Instructions)
11
In all circumstances the operation of the chain saw is a
oneman job.
It is difficult at times to take care of your own safety, so don't
assume the responsibility for a helper as well.
After you have learned the basic techniques of using the saw,
your best aid will be your own good common sense.
The accepted way to hold the saw is to stand to the left of the
saw with your left hand on the front handle so you can
operate the trigger switch with your right index finger.
Before attempting to fell a tree, cut some small logs or limbs.
Be thoroughly familiar with the controls and the responses of
the saw.
Start the unit, see that is running properly.
It is not necessary to press down hard to make the saw cut. If
the chain is properly sharpened, the cutting should be
relatively effortless.
Some material may adversely affect the housing of your chain
saw.(Example: palm tree acid, fertilizer etc.)
To avoid housing deterioration carefully remove all packed
saw dust around sprocket and guide bar area and wash with
water.
10.2
FELL A TREE
Figure 10-12.
A falling tree can seriously damage anything it may hit - a
car, a house, a fence, a power-line or another tree. There are
ways to make a tree fall where you want it, so first decide
where that is! Before cutting, clear the area around the tree.
You will need good footing while working and you should be
able to work the saw without hitting any obstacles.
1. Next select a path of retreat.
•
When the tree begins to fall you should retreat away
from the direction of fall at a 45-degree angle and at
least 3 m from the trunk to avoid the trunk kicking
back over the stump.
2. Begin the cut on the side to which the tree is to fall.
a) Notch: 1/3 of diameter and 30˚ to 45˚ angle
b) Back cut: 2.5 to 5 cm higher
c) Uncut hinge wood: 1/10 of diameter
•
Cut a notch approximately 1/3 of the way into the
tree. The position of this notch is important since the
tree will try to fall "into" the notch.
•
The felling cut is made on the side opposite the notch.
Make the felling cut by placing spiked bumper 2.5 cm
to 5 cm above the bottom of the notch and stop
cutting at approximately 1/10 of diameter to the inner
edge of the notch in order to leave the uncut portion
of the wood as a hinge.
•
Do not try to cut through to the notch with the felling
cut. The remaining wood between the notch cut and
felling cut will act as a hinge when the tree falls,
guiding it in the desired direction.
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