Replacing Carbon Brushes - Makita 5104 Instruction Manual

ASSEMBLY
CAUTION:
Always be sure that the tool is switched off and
•
unplugged before carrying out any work on the
tool.
Hex wrench storage
Fig.6
Hex wrench is stored on the tool. To remove hex wrench,
rotate it toward yourself and pull it out.
To install hex wrench, place it on the handle and turn it
until it comes into contact with the protrusion on the
handle.
Removing or installing saw blade
Fig.7
CAUTION:
Be sure the blade is installed with teeth pointing up
•
at the front of the tool.
Use only the Makita wrench to install or remove the
•
blade.
To remove the blade, press the shaft lock so that the
blade cannot revolve and use the hex wrench to loosen
the hex bolt counterclockwise. Then remove the hex bolt,
outer flange and blade.
To install the blade, follow the removal procedure in
reverse. BE SURE TO TIGHTEN THE HEX BOLT
CLOCKWISE SECURELY.
Fig.8
When changing blade, make sure to also clean upper
and lower blade guards of accumulated sawdust. Such
efforts do not, however, replace the need to check lower
guard operation before each use.
OPERATION
CAUTION:
Be sure to move the tool forward in a straight line
•
gently. Forcing or twisting the tool will result in
overheating the motor and dangerous kickback,
possibly causing severe injury.
Fig.9
Hold the tool firmly. The tool is provided with both a front
grip and rear handle. Use both to best grasp the tool. If
both hands are holding saw, they cannot be cut by the
blade. Set the base on the workpiece to be cut without
the blade making any contact. Then turn the tool on and
wait until the blade attains full speed. Now simply move
the tool forward over the workpiece surface, keeping it
flat and advancing smoothly until the sawing is
completed.
To get clean cuts, keep your sawing line straight and
your speed of advance uniform. If the cut fails to properly
follow your intended cut line, do not attempt to turn or
force the tool back to the cut line. Doing so may bind the
blade and lead to dangerous kickback and possible
serious injury. Release switch, wait for blade to stop and
then withdraw tool. Realign tool on new cut line, and
start cut again. Attempt to avoid positioning which
exposes operator to chips and wood dust being ejected
from saw. Use eye protection to help avoid injury.
Rip fence (Guide rule)
Fig.10
The handy rip fence allows you to do extra-accurate
straight cuts. Simply slide the rip fence up snugly against
the side of the workpiece and secure it in position with
the screw on the front of the base. It also makes
repeated cuts of uniform width possible.
Joint assembly
(for connecting a vacuum cleaner)
Fig.11
When you wish to perform clean cutting operation,
connect a vacuum cleaner to your tool. Install the joint
on the tool using the screw. Then connect a hose of the
vacuum cleaner to the joint.
MAINTENANCE
CAUTION:
Always be sure that the tool is switched off and
•
unplugged before attempting to perform inspection
or maintenance.
Adjusting for accuracy of 90° cut (vertical cut)
This adjustment has been made at the factory. But if it is
off, adjust the adjusting screw with a hex wrench while
squaring the blade with the base using a triangular rule,
try square, etc.
Fig.12
Fig.13

Replacing carbon brushes

Fig.14
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.15
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be
performed by Makita Authorized Service Centers,
always using Makita replacement parts.
7