Maintenance - Makita JR3000 Instruction Manual

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 trigger 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 pro-
vided 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 cut-
ting metal. Failure to do so will cause significant
blade wear.
6

MAINTENANCE

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,
maintenance or adjustment should be carried out by
a Makita Authorized Service Center.