Makita JR3000 Manuel D'instructions page 4

Speed change (For JR3000 only) (Fig. 3)
CAUTION:
Use the speed change switch only after the tool comes to
a complete stop.
To change the tool speed, move the speed change switch
to the "L" position for low speed or the "H" position for
high speed.
High speed: ordinary wood, plys or plastics
Low speed: metals (steel pipe, sheet metal, stainless or
copper)
Switch action (For JR3000) (Fig. 4)
CAUTION:
Before plugging the tool, always check to see that the
switch trigger actuates properly and returns to the "OFF"
position when released.
For tools with lock button
To start the tool, simply pull the trigger. Release the trig-
ger to stop. For continuous operation, pull the trigger and
then push in the lock button. To stop the tool from the
locked position, pull the trigger fully, then release it.
For tools with lock-off button
To prevent the trigger from being accidentally pulled, a
lock-off button is provided. To start the tool, press in the
lock-off button and pull the trigger. Release the trigger to
stop.
Switch action (For JR3000V) (Fig. 5)
CAUTION:
Before plugging the tool, always check to see that the
switch trigger actuates properly and returns to the "OFF"
position when released.
For tools with lock button
To start the tool, simply pull the trigger. tool speed is
increased by increasing pressure on the trigger. Release
the trigger to stop. For continuous operation, pull the trig-
ger and then push in the lock button. To stop the tool from
the locked position, pull the trigger fully, then release it. A
speed control screw is provided so that maximum tool
speed can be limited (variable). Turn the speed control
screw clockwise for higher speed, and counterclockwise
for lower speed.
For tools with lock-off button
To prevent the trigger from being accidentally pulled, a
lock-off button is provided. To start the tool, press in the
lock-off button and pull the trigger. tool speed is
increased by increasing pressure on the trigger. Release
the trigger to stop. A speed control screw is provided so
that maximum tool speed can be limited (variable). Turn
the speed control screw clockwise for higher speed, and
counterclockwise for lower speed.
Operation
Turn the tool on and wait until the blade attains full speed.
Then press the shoe against the workpiece and apply
pressure to cut the workpiece.
CAUTION:
Excessive pressure that causes bending or twisting of
the blade may snap it.
Metal cutting (Fig. 6)
Always use a suitable coolant (cutting oil) when cutting
metal. Failure to do so will cause significant blade wear.
MAINTENANCE
4
CAUTION:
Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
Replacement of carbon brushes
(For JR3000 only) (Fig. 7 & 8)
Replace carbon brushes when they are worn down to the
limit mark. Both identical carbon brushes should be
replaced at the same time.
To maintain product safety and reliability, repairs, mainte-
nance or adjustment should be carried out by a Makita
Authorized Service Center.