Maintenance - Makita SC190DW Instruction Manual

WARNING:
If you need to cut a short length off as mentioned
above, place the steel rod so that it can be fully
supported by the stopper bolt as illustrated to the
right in Fig. 9. And then, turn the stopper bolt to fix
the steel rod while keeping the steel rod at right
angles to the cutters.
Even in this recommended way, when cutting
steel rods of same hardness, steel debris can fly
mainly towards the derections marked with ''A'' in
Fig. 9, resulting in serious personal injures.
Therefore, when cutting a short length off, make
sure more then in cutting a longer length off that
there is nobody in the possibly dangerous direc-
tions and you are taking a working posture safe
from the possible attack of steel debris.
Always be sure to set a steel rod in the lowest
position between the cutters, and make sure that
the steel rod is fully supported by the stopper bolt.
(Fig. 8 & 9)
3. Operation
WARNING (Fig. 10):
Before starting cutting operation, make sure that
you are on the rear side of the tool as illustrated in
Fig. 10. And never place yourself in the directions
of ''A'' where steel debris can fly about.
Pull the trigger, and the cutter rod moves forward
to cut off a steel rod. And keep the trigger being
pulled till the steel rod is completely cut off and the
cutter rod stops.
And then, release the trigger, and the cutter rod
returns automatically to its initial position.
NOTE:
Even if you release the trigger while the cutter rod
is moving forward, the cutter rod does not return to
its initial position till it moves forward all the way
and comes to a stop.
And, even if you pull the trigger, the cutter rod
does not move forward till it returns to its initial
position.
CAUTION:
Immediately stop the tool for cooling when the
surface temperature of the tool rises over 70°C
because the heat gets the cutting power low.
Never leave the vent-hole clogged with mud, dust,
etc. because the vent-hole is essential for adjust-
ing the hydraulic pressure. (Fig. 11)
8
Application for tight quarters (Fig. 12)
The handle can rotate 360° right and left even in full
load operation.
Therefore, steel rods in tight quarters can be cut off
very easily.
Return valve (Fig. 13)
When the cutters are caught by the steel rod and the
cutter rod stops suddenly, the cutter rod can be easily
returned to its initial position by turning the return
valve counterclockwise about 180° with a hex wrench
M4. This half turn loosens the return valve and
releases the hydraulic pressure to return the cutter
rod.
Do not fail to tighten the return valve before starting
the next cutting.

MAINTENANCE

CAUTION:
Always be sure that the tool is switched off and the
battery cartridge is removed before carrying out any
work on the tool.
Oil replenishment (Fig. 14)
The tool has a good amount of factory-packed oil for
generating hydraulic pressure to cut steel rods.
Therefore, never add oil as far as the tool performs
well. When the hydraulic pressure gets not enough for
cutting steel rods, take the following steps of proce-
dure to replenish the oil.
Always use Makita Genuine Hydraulic Oil #46 for
replenishment.
1. Set a steel rod between the cutters in the right way
and pull the trigger.
2. Release the trigger just before the steel rod is cut
off.
3. Remove the battery cartridge from the tool.
4. Remove the hex bolt M10 x 15 that plugs the oil
hole. Replenish the oil, being careful not to let any
oil flow into the motor.
5. Tighten the hex bolt M10 x 15 securely.
6. Install the battery cartridge on the tool. Pull the
trigger to complete cut-off of the steel rod.
7. Repeat the steps 1 to 6 several times till the oil
accumulates enough and the tool regains its
normal cut-off performance.
To maintain product safety and reliability, repairs,
maintenance or adjustment should be carried out by a
Makita Authorized Service Center.