8
“O (OFF)” position when the rear of the switch lever is
depressed.
• Switch can be locked in “I (ON)” position for ease of
operator comfort during extended use. Apply caution
when locking tool in “I (ON)” position and maintain firm
grasp on tool.
To start the tool, slide the switch lever toward the “I (ON)”
position. For continuous operation, press the front of the
switch lever to lock it. To stop the tool, press the rear of
the switch lever, then slide it toward “O (OFF)” position.
OPERATING INSTRUCTIONS
Installing or removing wheel guard (For
depressed center wheel, multi disc/
abrasive cut-off wheel, diamond wheel)
For tool with locking screw type wheel guard (Fig. 3 &
4)
Mount the wheel guard with the tab on the wheel guard
band aligned with the notch on the bearing box. Then
rotate the wheel guard 180° clockwise or
counterclockwise. Be sure to tighten the screw securely.
Installing side grip (Fig. 5 & 6)
Fig. A: MT951, MT952, MT953
Fig. B: MT955
CAUTION:
• Always be sure that the side grip is installed securely
before operation.
Screw the side grip securely on the position of the tool as
shown in the figure.
Installing or removing depressed center
wheel (optional accessory) (Fig. 7 & 8)
CAUTION:
• Always be sure that the tool is switched off and
unplugged before installing or removing the wheel.
Mount the inner flange onto the spindle. (THE SIDE WITH
THE RUBBER SURFACE SHOULD CONTACT THE
WHEEL for rubber molded inner flange only.) Fit the
wheel on over the inner flange and screw the lock nut onto
the spindle.
To tighten the lock nut, press the shaft lock firmly so that
the spindle cannot revolve, then use the lock nut wrench
and securely tighten clockwise.
To remove the wheel, follow the installation procedure in
reverse.
OPERATION (Fig. 9)
WARNING:
• It should never be necessary to force the tool. The
weight of the tool applies adequate pressure.
Forcing and excessive pressure could cause
dangerous wheel breakage.
• Continued use of a worn-out wheel may result in wheel
explosion and serious personal injury.
Hold the tool firmly. Turn the tool on and then apply the
wheel or disc to the workpiece. In general, keep the edge
of the wheel or disc at an angle of about 15° to the
workpiece surface. During the break-in period with a new
wheel, do not work the tool in the B direction or it will cut
into the workpiece. Once the edge of the wheel has been
rounded off by use, the wheel may be worked in both A
and B directions.
Operation with abrasive cut-off/diamond
wheel (optional accessory) (Fig. 10)
The direction for mounting the lock nut and the inner
flange varies by wheel thickness. Refer to the table below.
