Makita BO4901J Instrucciones Originales página 5

FUNCTIONAL DESCRIPTION
CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function on the
tool.
Switch action (Fig. 1)
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, then release it.
Speed adjusting dial
For BO4900V only
CAUTION:
• If the tool is operated continuously at low speeds, the
motor will get overloaded and heated up.
• 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 speed
adjusting function may no longer work.
The tool speed can be infinitely adjusted between 4,000
and 11,000 orbits per minute by turning the speed adjust-
ing dial, which is marked 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. Adjust the desired tool speed for the kind of
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 paper
For conventional type of abrasive paper with pre-
punched holes (standard equipment):
Turn the clamp lever counterclockwise. Insert the paper
end into the clamper, aligning the holes in the paper with
those in the pad. Then return the clamp lever to the origi-
nal position to secure the paper. Repeat the same pro-
cess for the other end of the tool, maintaining the proper
paper tension. (Fig. 2)
For conventional type of abrasive paper without pre-
punched holes (accessory):
Turn the clamp lever counterclockwise. Insert the paper
end into the clamper, aligning the paper edges even and
parallel with the sides of the base. Then return the clamp
lever to the original position to secure the paper. Repeat
the same process for the other end of the tool, maintain-
ing the proper paper tension.
Place the punch plate (optional accessory) over the
paper so that the guide of the punch plate is flush with
the sides of the pad. Then press the punch plate to make
holes in the paper. (Fig. 3)
For hook-and-loop type of abrasive paper with pre-
(accessory)
punched holes
Remove all dirt or foreign matter from the pad. Attach the
paper to the pad, aligning the holes in the paper with
those in the pad. (Fig. 4)
CAUTION:
• Never use pressure-sensitive abrasive paper.
For BO4901 only
NOTE:
• To use the hook-and-loop type of abrasive paper, first
replace the pad. Remove the pad for the conventional
type of abrasive paper from the tool with a screwdriver.
(Fig.5)
Install the pad for the hook-and-loop type of abrasive
paper (optional accessory) on the tool. Tighten the
screws firmly to secure the pad.
Installing paper dust bag (accessory)
For BO4900, BO4900V only
Place the paper dust bag on the paper dust bag holder
with its front side upward. Insert the front fixing card-
board of the paper dust bag into the groove of the paper
dust bag holder. (Fig.6)
Then press the upper part of the front fixing cardboard in
arrow direction to hook it onto the claws. (Fig. 7)
Insert the notch of the paper dust bag into the guide of
the paper dust bag holder. Then install the paper dust
bag holder set on the tool. (Fig. 8 & 9)
Installing dust bag (accessory) (Fig. 10)
For BO4900, BO4900V only
Install the dust bag on the tool so that the arrow with "UP"
indicated on the dust nozzle points upward.
Emptying dust bag
When the dust bag is about half full, switch off and
unplug the tool. Hold the tool and remove the dust bag
from the dust nozzle while pressing the push button.
(Fig. 11 & 12)
After emptying the dust bag, insert the hook on the dust
nozzle into the rectangular hole on one side of the dust
bag frame until it clicks into place on the push button.
(Fig. 13)
Connecting to vacuum cleaner (Fig. 14)
When you wish to perform cleaner operation, connect a
vacuum cleaner to your tool. Connect a hose of vacuum
cleaner to the dust nozzle.
OPERATION
CAUTION:
• Never run the tool without the abrasive paper. You may
seriously damage the pad.
• Never force the tool. Excessive pressure may decrease
the sanding efficiency, damage the abrasive paper and/
or shorten tool life.
• The front grip is a screwed type one. Always be sure
that the front grip is tightened securely before opera-
tion.
Turn the tool on and wait until it attains full speed. Then
gently place the tool on the workpiece surface. Keep the
base flush with the workpiece and apply a light pressure
on the tool.
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