Replace the cutters in accordance with the following procedure. Use only Makita genuine cutters for the tool.
1. There are two cutters. Cutter A is to be installed on the cutter head, and cutter B on the cutter rod. Be sure
to install them in the correct respective position. Refer to the table below for the cutter sizes.
For Model
Cutter A
Cutter B
SC130DRA
20 x 15 x 9 mm
(four cutting edges)
20 x 15 x 8 mm
(four cutting edges)
SC160DRA
22 x 17 x 9 mm
(four cutting edges)
22 x 17 x 8 mm
(one cutting edge)
SC190DW
28 x 20 x 11.5 mm
(four cutting edges)
26 x 20 x 10 mm
(four cutting edges)
2. To install the cutters, first remove the two hex socket head bolts holding the cutters on the cutter head and
cutter rod, respectively.
3. Wipe off any dirt or foreign matter from the cutter-mounting position on the cutter head and cutter rod.
4. Secure firmly cutter A on the cutter head and cutter B on the cutter rod, using their respective flat washers
and hex socket head bolts. Failure to tighten securely is extremely dangerous.
Installing balance stand (Fig. 8)
When using the balance stand on the tool, be sure not
to block the air vents.
Switch action (Fig. 9)
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 start the tool, simply pull the trigger. Tool speed is
increased by increasing pressure on the trigger.
Release the trigger to stop.
Cutting operation (Fig. 10, 11, 12, 13 and 14)
1. Place the steel rod (material to be cut) in the
opening so as to be at right angles to the cutters.
Adjust
the
stopper
(adjusting
hex
bolt
for
SC190DW) in terms of the steel rod size (diam-
eter). When cutting large size steel rods, position
the stopper (adjusting hex bolt) as shown in
Fig. 11-1, 12-1. When cutting small size steel
rods, position the stopper (adjusting hex bolt) as
shown in Fig. 11-2, 12-2. The stopper (adjusting
hex bolt) keeps the steel rod at right angles to the
cutters during the cutting.
2. Keep the steel rod at the deepest position in
between the cutters as shown in Fig. 13-1. Never
keep it as shown in Fig. 13-2. If the steel rod is not
placed at the deepest position between the cut-
ters, it may ride up and cause a fragment or piece
to fly up. Besides this dangerous situation, the
cutters may be damaged. Always position the
steel rod properly.
3. Pull the trigger. The cutter rod advances to cut off
the steel rod. Keep the trigger pulled until the steel
rod is completely cut off.
4. Release the trigger, and the cutter rod will auto-
matically return to its initial position.
NOTE:
The cutter rod will not return to its initial position
even if you release the trigger until the cutter rod
advances all the way and stops. And until the
cutter rod completely return to its initial position, it
will not move forward again even if you pull the
trigger. Pull the trigger to begin the next cut-off
only after the cutter rod has completely returned to
its initial position.
Return valve (Fig. 15)
For SC160DRA and SC190DW
It may happen that the cutters will engage the steel
rod and come to a stop before the cut-off is com-
pleted. In that case, use the hex wrench M4 to release
the hydraulic pressure in the return valve. Insert the
hex wrench M4 into the return valve hole and make a
half turn in the counterclockwise direction. This
releases the hydraulic pressure inside the tool, allow-
ing the cutter rod to return to its initial position. Always
retighten the valve before doing the next cut-off job.
Angling into tight places
For SC160DRA and SC190DW
One useful feature is that you can, even after begin-
ning a cut-off (load condition), rotate the tool by the
handle 360° left or right. This makes work in tight
places easier, especially trigger access and activa-
tion. You can even swing the tool while pulling the
trigger.
10
SC130DRA/SC160DRA/SC190DW (E) (’100. 1. 13)
