Makita 9911J Manuel D'instructions page 5

Speed adjusting dial (Fig. 2)
For 9911 only
The belt speed can be infinitely adjusted between 75 m
and 270 m per minute by turning the speed adjusting dial
to a given number setting from 1 to 6. Higher speed is
obtained when the dial is turned in the direction of num-
ber 6; lower speed is obtained when it is turned in the
direction of number 1.
Select the proper speed for the workpiece to be sanded.
CAUTION:
• If the tool is operated continuously at low speeds for a
long time, the motor will get overloaded, resulting in
tool malfunction.
• The speed adjusting dial can be turned only as far as 6
and back to 1. Do not force it past 6 or 1, or the speed
adjusting function may no longer work.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
Installing or removing abrasive belt (Fig. 3)
Pull the lever all the way out and install the belt over the
rollers, then return the lever to the original position.
CAUTION:
• When installing the belt, make sure that the direction of
the arrow on the back of the belt corresponds to the
one on the tool itself. (Fig. 4)
Adjusting belt tracking (Fig. 5)
Switch on the tool and make sure that the belt is aligned
properly. If the edge of the belt extends beyond the edge
of the steel plate or the edge of the belt retracts more
than 8 mm away from the edge of the steel plate, use the
adjusting screw to adjust the belt tracking.
Dust bag (Fig. 6)
Attach the dust bag onto the dust spout. The dust spout
is tapered. When attaching the dust bag, push it onto the
dust spout firmly as far as it will go to prevent it from com-
ing off during operation.
When the dust bag is about half full, remove the dust bag
from the tool and pull the fastener out. Empty the dust
bag of its contents, tapping it lightly so as to remove par-
ticles adhering to the insides which might hamper further
collection.
NOTE:
• If you connect a Makita vacuum cleaner to this tool,
more efficient and cleaner operations can be per-
formed.
Connecting to Makita vacuum cleaner (Fig. 7)
Cleaner sanding operations can be performed by con-
necting the belt sander to Makita vacuum cleaner.
When connecting to Makita vacuum cleaner, an optional
hose 28 mm in inner diameter is necessary.
OPERATION
Sanding operation (Fig. 8)
CAUTION:
• The tool should not be in contact with the workpiece
surface when you turn the tool on or off.
Otherwise a poor sanding finish or damage of the belt
may result.
Hold the tool firmly with both hands. Turn the tool on and
wait until it attains full speed. Then gently place the tool
on the workpiece surface. Keep the belt flush with the
workpiece at all times and move the tool back and forth.
Never force the tool. The weight of the tool applies ade-
quate pressure. Excessive pressure may cause stalling,
overheating of the motor, burning of the workpiece and
possible kickback.
Clamps (optional accessory) (Fig. 9)
This tool can be operated in the inverted position. To do
so, secure the tool to a stable workbench with two
clamps.
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection or
maintenance.
• Never use gasoline, benzine, thinner, alcohol or the
like. Discoloration, deformation or cracks may result.
To maintain product SAFETY and RELIABILITY, repairs,
carbon brush inspection and replacement, any other
maintenance or adjustment should be performed by
Makita Authorized or Factory Service Centers, always
using Makita replacement parts.
OPTIONAL ACCESSORIES
CAUTION:
• These accessories or attachments are recommended
for use with your Makita tool specified in this manual.
The use of any other accessories or attachments might
present a risk of injury to persons. Only use accessory
or attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita service center.
• Abrasive belts
• Dust bag
• Clamp
• Hose 28 mm in inner diameter
NOTE:
• Some items in the list may be included in the tool pack-
age as standard accessories. They may differ from
country to country.
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