Installing/Removing Abrasive Belt; Switch Action; Functional Description; Adjusting Belt Tracking - Makita 9902 Instruction Manual

FUNCTIONAL DESCRIPTION

CAUTION:
Always be sure that the tool is switched off and
•
unplugged before adjusting or checking function on
the tool.

Switch action

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CAUTION:
Before plugging in the tool, always check to see
•
that the switch trigger actuates properly and returns
to the "OFF" position when released.
To start the tool, simply pull the switch trigger. Release
the switch trigger to stop.
For continuous operation, pull the switch trigger and then
push in the lock button.
To stop the tool from the locked position, pull the switch
trigger fully, and then release it.
Speed adjusting dial
For 9903, 9920 and 9404
1
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The belt speed can be infinitely adjusted between 210 m
and 440 m per minute by turning the speed adjusting dial
to a given number setting from 1 to 5. Higher speed is
obtained when the dial is turned in the direction of
number 5; 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 5 and back to 1. Do not force it past 5 or 1, or the
1. Lock button
1
2. Switch trigger
2
1. Speed adjusting
dial
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
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Pull the lever all the way out and install the belt over the
rollers, and 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.
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Adjusting belt tracking

more than 6mm
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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 base or the edge of the belt retracts more than 6
mm away from the edge of the base, use the adjusting
knob to adjust the belt tracking.
5
1. Lever
1
1. Steel plate
1
2. Adjusting knob
2