Operation; Maintenance; Replacing Carbon Brushes - Makita JR3050T Instruction Manual

Insert the saw blade into the blade clamp as far as it will
go. The blade clamp lever rotates and the saw blade is
fixed. Make sure that the saw blade cannot be extracted
even though you try to pull it out.
► Fig.5: 1. Blade
NOTE:
• If you do not insert the saw blade deep enough,
the saw blade may be ejected unexpectedly
during operation. This can be extremely
dangerous.
If the lever is positioned inside the tool, switch on the
tool just a second to let the blade out as shown in the
figure.
Switch off and unplug the tool from the mains.
To remove the saw blade, rotate the blade clamp
lever in the direction of the arrow fully. The saw blade
is removed and the blade clamp lever is fixed at the
released position .
► Fig.6: 1. Blade clamp lever
NOTE:
• Keep hands and fingers away from the lever
during the switching operation. Failure to do so
may cause personal injuries.
• If you remove the saw blade without rotating
the blade clamp lever fully, the lever may not be
locked in the released position
rotate the blade clamp lever fully again, then
make sure that the blade clamp lever locked at
the released position

OPERATION

► Fig.7
CAUTION:
• Always press the shoe firmly against the work-
piece 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 prema-
ture blade wear.
Press the shoe firmly against the workpiece. Do not
allow the tool to bounce. Bring the blade into light con-
tact with the workpiece. First, make a pilot groove using
a slower speed. Then use a faster speed to continue
cutting.
. In this case,
.

MAINTENANCE

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

Replacing carbon brushes

► Fig.8: 1. Limit mark
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.
Use a screwdriver to remove the brush holder caps.
Take out the worn carbon brushes, insert the new ones
and secure the brush holder caps.
► Fig.9: 1. Brush holder cap 2. Screwdriver
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be per-
formed by Makita Authorized Service Centers, always
using Makita replacement parts.
OPTIONAL
ACCESSORIES
CAUTION:
• These accessories or attachments are recom-
mended for use with your Makita tool specified
in this manual. The use of any other accessories
or attachments might present a risk of injury to
persons. Only use accessory or attachment for
its stated purpose.
If you need any assistance for more details regard-
ing these accessories, ask your local Makita Service
Center.
• Recipro saw blades
• Plastic carrying case
NOTE:
• Some items in the list may be included in the
tool package as standard accessories. They
may differ from country to country.
6 ENGLISH