Installing Or Removing Saw Chain; Operation - Makita UC3520A Instruction Manual

ASSEMBLY
CAUTION:
Always be sure that the tool is switched off and
•
unplugged before carrying out any work on the
tool.

Installing or removing saw chain

CAUTION:
Always be sure that the tool is switched off and
•
unplugged before installing or removing the saw
chain.
Always wear gloves when installing or removing
•
the saw chain.
1. To remove the saw chain, move the lever in the
upright position.
Fig.2
2. Press the lever and with the lever pressed in, turn
it counterclockwise to loosen the nut until sprocket
cover comes off. (Pressing in the lever leads to
the fitting of lever into the nut.)
3. Turn the adjusting dial counterclockwise to
release the saw chain tension.
4. Remove the sprocket cover.
5. Remove the saw chain and guide bar from the
chain saw.
6. To install the saw chain, fit in one end of the saw
chain on the top of the guide bar and the other
end of it around the sprocket.
Fig.3
At this time, fit the saw chain as shown in the figure
because it rotates in the direction of arrow.
7. Rest the guide bar in place on the chain saw
8. Turn the adjusting dial counterclockwise to slide
the adjusting pin in the direction of arrow.
Fig.4
9. Place the sprocket cover on the chain saw so that
the hook at its back cover is inserted into a hole in
the chain saw and the adjusting pin is positioned
in a small hole in the guide bar.
Fig.5
10. Press in the lever and with the lever depressed
turn it fully clockwise to tighten the nut. Then
make it about a quarter turn counterclockwise to
loosen the nut lightly.
Fig.6
Adjusting saw chain tension
Fig.7
The saw chain may become loose after many hours of
use. From time to time check the saw chain tension
before use.
Move the lever in the upright position.
Press in the lever. With the lever depressed, make a
quarter turn on it counterclockwise to loosen the nut
lightly. (Pressing in the lever leads to the fitting of lever
into the nut.)
Fig.8
Turn the adjusting dial to adjust saw chain tension.
Grasp the saw chain in the middle of the guide bar and
lift up. The gap between the guide bar and the tie strap
of the saw chain should be approx. 2 - 4 mm. If the gap
is not approx. 2 - 4 mm, slightly turn the adjusting dial
which secures the guide bar. At this time, adjust with the
tip of guide bar slightly pointing up.
Fig.9
With the lever depressed, turn it fully clockwise to tighten
the nut firmly.
Fig.10
Return the lever to its original position.
Fig.11
CAUTION:
Excessively high tension of saw chain may cause
•
breakage of saw chain, wear of the guide bar and
breakage of the adjusting dial.
Installing or removing saw chain should be carried
•
out in a clean place free from sawdust and the like.

OPERATION

Lubrication
Fig.12
CAUTION:
Always be sure that the tool is switched off and
•
unplugged before lubricating the saw chain.
Lubricate the saw chain and bar using a biologically
degradable saw chain oil with an adhesion agent. The
adhesion agent in the saw chain oil prevents the oil from
being thrown off the saw excessively quickly. Mineral oils
must not be used, as they are harmful to the
environment.
CAUTION:
Prevent the oil from coming into contact with the
•
skin and eyes. Contact with the eyes causes
irritation. In the event of eye contact, flush the
affected eye immediately with clear water, then
consult a doctor at once.
Never use
•
carcinogenic substances. The contaminants in
waste oil cause accelerated wear of the oil pump,
the bar and the chain. Waste oil is harmful to the
environment.
When filling the chain saw with chain oil for the first
•
time, or refilling the tank after it has been
completely emptied, add oil up to the bottom edge
of the filler neck. The oil delivery may otherwise be
impaired.
12
waste oil. Waste oil contains