Makita 9911 Manuel D'instructions page 6

Sanding operation (Fig. 6)
Hold the machine firmly with both hands. Turn the
machine on and wait until it attains full speed. Then
gently place the machine on the workpiece surface.
Keep the belt flush with the workpiece at all times and
move the machine back and forth. Never force the
machine. The weight of the machine applies
adequate pressure. Excessive pressure may cause
stalling, overheating of the motor, burning of the
workpiece and possible kickback.
Clamps (optional accessory) (Fig. 8)
This machine can be operated in the inverted position. To do so, secure the machine to a stable workbench with
two clamps as shown in Fig. 8.
Connecting to Makita vacuum cleaner or dust collector
Cleaner sanding operations can be performed by connecting the belt sander to Makita vacuum cleaner or dust
collector.
When connecting to Makita vacuum cleaner (Model 406/431), an optional hose 28 mm in inner diameter is
necessary. See the figure below.
Makita vacuum cleaner
When connecting to Makita dust collector (Model 420), the optional hose is not necessary. You can connect the
belt sander directly to the hose of the dust collector.
MAINTENANCE
CAUTION:
Always be sure that the machine is switched off and
unplugged before carrying out any work on the
machine.
Replacement of carbon brushes
(Fig. 9, 10 & 11)
Replace carbon brushes when they are worn down to
the limit mark. First, remove the belt cover from the
machine, then replace the carbon brushes. Both
identical carbon brushes should be replaced at the
same time.
To maintain product safety and reliability, repairs,
maintenance or adjustment should be carried out by
Makita Authorized Service Center.
6
+
Hose of vacuum cleaner
Speed adjusting dial (Fig. 7)
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 number 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:
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.
+
Optional hose 28 mm in inner dia.
GUARANTEE
We guarantee Makita machines in accordance with
statutory/country-specific regulations. Damage attrib-
utable to normal wear and tear, overload or improper
handling will be excluded from the guarantee. In case
of complaint, please send the machine, undismantled,
with the enclosed GUARANTEE CERTIFICATE, to
your dealer or the Makita Service Center.