Maintenance; Replacing Carbon Brushes - Makita JR140D Instruction Manual

MAINTENANCE

1. Limit mark
1
2
1. Brush holder cap
2. Screwdriver
Press the shoe firmly against the workpiece. Do not allow the
001669
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.
NOTE:
• If the tool is operated continuously until the battery
cartridge has discharged, allow the tool to rest for 15
minutes before proceeding with a fresh battery.
CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before attempting to
perform inspection or maintenance.

Replacing carbon brushes

001145
Remove and check the carbon brushes regularly. Replace
when they wear down to the limit mark. Keep the carbon
brushes clean and free to slip in the holders. Both carbon
brushes should be replaced at the same time. Use only iden-
tical carbon brushes.
1
Use a screwdriver to remove the brush holder caps. Take out
002519
the worn carbon brushes, insert the new ones and secure
the brush holder caps.
After replacing brushes, insert the battery cartridge into the
tool and break in brushes by running tool with no load for
about 1 minute. Then check the tool while running and elec-
tric brake operation when releasing the switch trigger. If elec-
tric brake is not working well, ask your local Makita service
center for repair.
To maintain product SAFETY and RELIABILITY, repairs, any
other maintenance or adjustment should be performed by
Makita Authorized or Factory Service Centers, always using
Makita replacement parts.
11