Adjusting Saw Chain Tension; Lubrication - Makita DUC303 Manuel D'instructions

4. Turn the adjusting dial to "-" direction to slide the
adjusting pin in the direction of arrow.
► Fig.14: 1. Adjusting pin
5. Place the sprocket cover on the chain saw so that the
adjusting pin is positioned in a small hole on the guide bar.
► Fig.15: 1. Sprocket cover 2. Guide bar 3. Hole
6.
Turn the lever clockwise fully and a quarter turn
back to keep looseness for adjusting the chain tension.
7. Turn the adjusting dial to adjust the chain tension.
8. Turn the lever clockwise until the sprocket cover is
secured then return it to the original position.
► Fig.16: 1. Lever 2. Sprocket cover

Adjusting saw chain tension

CAUTION:
Carry out the procedure of install-
ing or removing saw chain in a clean place free
from sawdust and the like.
CAUTION:
Do not tighten the saw chain too
much. Excessively high tension of saw chain may
cause breakage of saw chain, wear of the guide bar
and breakage of the adjusting dial.
CAUTION:
A chain which is too loose can jump
off the bar and it may cause an injury accident.
The saw chain may become loose after many hours of use.
From time to time check the saw chain tension before use.
1. Press and fully open the lever until it clicks. Turn it
counterclockwise a little to loosen sprocket cover lightly.
► Fig.17: 1. Lever 2. Sprocket cover
2. Lift up the guide bar tip slightly and adjust the
chain tension. Turn the adjusting dial to the "-" direction
to loosen, turn to the "+" direction to tighten. Tighten the
saw chain until the lower side of the saw chain fits in the
guide bar rail as illustrated.
► Fig.18: 1. Adjusting dial 2. Guide bar 3. Saw chain
3.
Keep holding the guide bar lightly and tighten the
sprocket cover. Make sure that the saw chain does not
loose at the lower side.
4. Return the lever to the original position.
► Fig.19: 1. Lever 2. Sprocket cover
Make sure the saw chain fits snugly against the lower
side of the bar.
OPERATION

Lubrication

Saw chain is automatically lubricated when the tool is in opera-
tion. Check the amount of remaining oil in the oil tank periodically.
To refill the tank, lay the chain saw on its side and remove the
oil tank cap. The proper amount of oil is 200 ml. After refilling
the tank, make sure that the oil tank cap is tightened securely.
► Fig.20: 1. Oil tank cap 2. Oil tank (translucent)
After refilling, hold the chain saw away from the tree. Start
it and wait until lubrication on saw chain is adequate.
► Fig.21
NOTICE:
When filling the chain oil for the first
time, or refilling the tank after it has been com-
pletely emptied, add oil up to the bottom edge of
the filler neck. The oil delivery may otherwise be
impaired.
NOTICE:
Use the saw chain oil exclusively for
Makita chain saws or equivalent oil available in
the market.
NOTICE:
Never use oil including dust and parti-
cles or volatile oil.
NOTICE:
When pruning trees, use botanical oil.
Mineral oil may harm trees.
NOTICE:
Before the cutting operation, make sure
that the provided oil tank cap is screwed in place.
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.
NOTICE:
Never toss or drop the tool.
NOTICE:
Do not cover the vents of the tool.
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
Bucking
1. Rest the bottom edge of the chain saw body on
the wood to be cut.
► Fig.24
2.
With the saw chain running, saw into the wood
while using the rear handle to raise the saw and the
front one to guide it. Use the spike bumper as a pivot.
3. Continue the cut by applying slight pressure to
the front handle, easing the saw back slightly. Move
the spike bumper further down the timber and raise the
front handle again.
14 ENGLISH