Adjusting Saw Chain Tension; Operation - Makita DUC303 Instruction Manual
Cordless chain saw
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- Instruction manual (145 pages) ,
- Instruction manual (57 pages) ,
- Instruction manual (145 pages)
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Removing or installing saw chain
CAUTION:
The saw chain and the guide bar
are still hot just after the operation. Let them cool
down enough before carrying out any work on
the tool.
To remove the saw chain, perform the following steps:
1.
Pull the lever up while pressing its edge.
► Fig.10: 1. Lever
2.
Turn the adjusting dial to "-" direction to release
the saw chain tension.
► Fig.11: 1. Adjusting dial
3.
Turn the lever counterclockwise until the sprocket
cover comes off.
► Fig.12: 1. Lever 2. Sprocket cover
4.
Remove the sprocket cover then remove the saw
chain and guide bar from the chain saw body.
To install the saw chain, perform the following steps:
1.
Make sure the direction of the chain. The arrow
mark on the chain shows the direction of the chain.
2.
Fit in one end of the saw chain on the top of the
guide bar and the other end around the sprocket.
► Fig.13: 1. Sprocket
3.
Rest the guide bar in place on the chain saw.
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
operation. 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.
14 ENGLISH
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