Maintenance - Makita 4331D Instruction Manual

MAINTENANCE

1. Limit mark
2
1. Brush holder cap
2. Screwdriver
12
B) Plunge cutting
002764
You need not bore a starting hole or make a lead-in cut if you carefully do
as follows.
(1)
(2)
(3)
(4)
Finishing edges
002769
To trim edges or make dimensional adjustments, run the blade lightly along
the cut edges.
Metal cutting
Always use a suitable coolant (cutting oil) when cutting metal. Failure to do so
will cause significant blade wear. The underside of the workpiece can be
greased instead of using a coolant.
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
identical carbon brushes.
1
Use a screwdriver to remove the brush holder caps. Take out the worn carbon
002785
brushes, insert the new ones and secure the brush holder caps.
To maintain product SAFETY and RELIABILITY, repairs, any other mainte-
1
nance or adjustment should be performed by Makita Authorized Service Cent-
ers, always using Makita replacement parts.
Tilt the tool up on the front edge of the base with the blade point
positioned just above the workpiece surface.
Apply pressure to the tool so that the front edge of the base will not
move when you switch on the tool and gently lower the back end of
the tool slowly.
As the blade pierces the workpiece, slowly lower the base of the
tool down onto the workpiece surface.
Complete the cut in the normal manner.