Maintenance; Optional Accessories - Makita 4190d Instruction Manual

Switch action (Fig. 5)
CAUTION:
• Before inserting the battery cartridge into the tool,
always check to see that the switch trigger actuates
properly and returns to the "OFF" position when
released.
To prevent the switch trigger from being accidentally
pulled, a lock-off lever is provided.
To start the tool, slide the lock-off lever in the direction of
the arrow and pull the switch trigger. Release the switch
trigger to stop.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before carrying out any
work on the tool.
Installing or removing diamond wheel
(Fig. 6)
To install the wheel, first loosen the bolt with the hex
wrench and remove the bolt and the flange. Then mount
the wheel, the flange and the bolt. The wheel should be
mounted with the Makita name on the flange side.
Press the blade stopper pin and insert it through the hole
in the wheel so that the wheel cannot revolve. Use the hex
wrench to tighten the bolt securely.
To remove the wheel, follow the installation procedure in
reverse. (Fig. 7)
CAUTION:
• When installing the wheel, be sure to tighten the bolt
securely.
• Use only the Makita wrench to install or remove the
wheel.
Hex wrench storage (Fig. 8)
When not in use, store the hex wrench as shown in the
figure to keep it from being lost.
Installing water supply (Fig. 9)
Attach the tank holder on the tank. The tank holder should
be attached around the portion shown with the dotted line.
Tighten the screw (A) to the extent that the tank can still
turn within the tank holder.
Attach the tank holder onto the motor housing. Tighten the
screw (B) securely. (Fig. 10)
Connect the cap on the end of the polyvinyl tube to the
mouth of the tank. Turn the tank clockwise when making
the connection. Then tighten the screw (A) securely to
secure the tank. (Fig. 11)
CAUTION:
• If you find the polyvinyl tube is bent like a "V" or has
been strained excessively after installing the water
supply, loosen the screw (B) and adjust the position of
the tank to alleviate the bent, pinched or strained
condition.
Water supply (Fig. 12)
Remove the cap on the tank and fill through the hole.
Recap the tank. Be sure that the water cock is turned off
when filling the tank with water.
8
CAUTION:
• When filling the tank with water, be careful not to let the
tool get wet.
OPERATION (Fig. 13)
Hold the tool firmly. Set the base plate on the workpiece to
be cut without the wheel making any contact. Then turn
the tool on and wait until the wheel attains full speed.
Feed water to the wheel by adjusting the water cock to
obtain a gentle flow of water. Move the tool forward over
the workpiece surface, keeping it flat and advancing
smoothly until the cutting is completed. Keep your cutting
line straight and your speed of advance uniform.
For fine, clean cuts, cut slowly. (When cutting glass plate
5 mm thick, cut at about 250 mm/min. When cutting tile
10 mm thick, cut at about 300 mm/min.) Also slow down
as you complete a cut to avoid breaking or cracking the
workpiece being cut.
CAUTION:
• Be sure to hold the workpiece firmly down on a stable
bench or table during operation.
• Do not twist or force the tool in the cut, or the motor
may be overloaded or the workpiece may break.
• Do not use the tool with the wheel in an upward or
sideways position.
• When cutting glass plate, it is recommended to attach a
rubber plate (optional accessory) on the base of the
tool to prevent the workpiece surface from being
scratched.
• The wheel for this tool is a wet-type wheel for glass and
tile applications. Be sure to feed water to the wheel
during operation.
• If the cutting action of the wheel begins to diminish,
dress the cutting edge of the wheel using an old
discarded coarse grit bench grinder wheel or concrete
block. Dress by pressing lightly on the outer edge of
the wheel.
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.

MAINTENANCE

CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before attempting to
perform inspection or maintenance.
After use
Brush off accumulation of dust on the base.
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.

OPTIONAL ACCESSORIES

CAUTION:
• These accessories or attachments are recommended
for use with your Makita tool specified in this manual.
The use of any other accessories or attachments might