Operation; Maintenance; Replacing Carbon Brushes - Makita MJR300T Instruction Manual

2
014347
To install the blade, loosen the screw on the blade
clamp with the hex wrench. Insert the blade between
the blade clamp and the slider so that the pin on the
slider fits into the hole in the blade shank. If the pin
cannot easily fit into the hole, remove the hex wrench
from the screw and then try again.
CAUTION:
If you tighten the screw without the pin on the
•
slider fitting properly in the hole in the blade shank,
the pin or the blade shank will be damaged. This
may cause the blade to be extracted unexpectedly
during operation.
5
4
3
014346
After the pin fits properly into the hole, tighten the screw
clockwise securely. Make sure that the blade cannot be
extracted even though you try to pull it out.
To remove the blade, follow the installation procedure in
reverse.
Hex wrench storage
2
014358
When not in use, store the hex wrench as shown in the
figure to keep it from being lost.
1. Hex wrench
2. Screw
1
1. Screw
1
2. Pin
3. Blade clamp
4. Hole
5. Blade
2
1. Hex wrench
2. Insulation cover
1

OPERATION

CAUTION:
Always hold the tool firmly with one hand on
•
insulation cover and the other on the switch handle.
Always press the
•
workpiece during operation. If the shoe is removed
or held away from the workpiece during operation,
strong vibration and/or twisting will be produced,
causing the blade to snap dangerously.
Always wear gloves to protect your hands from hot
•
flying chips when cutting metal.
Be sure to always wear suitable eye protection
•
which conforms with current national standards.
Always use a suitable coolant (cutting oil) when
•
cutting metal. Failure to do so will cause
premature blade wear.
014354
Press the shoe firmly against the workpiece. Do not
allow the tool to bounce. Bring the blade into light
contact with the workpiece. First, make a pilot groove
using a slower speed. Then use a faster speed to
continue cutting.

MAINTENANCE

CAUTION:
Always be sure that the tool is switched off and
•
unplugged before attempting to perform inspection
or maintenance.
Never use gasoline, benzine, thinner, alcohol or
•
the like. Discoloration, deformation or cracks may
result.

Replacing carbon brushes

001145
6
shoe firmly against the
1. Limit mark
1