10
NOTE
：
Although this machine is equipped with a safety clutch, if the drill bit becomes bound in concrete or
other material, the resultant stoppage of the drill bit could cause the machine body to turn in
reaction. Ensure that the main handle and side handle are gripped firmly during operation.
3. When crushing operation at “hammering”:
CAUTION:
○
If the function knob is switched during motor rotation, the tool can start to rotate abruptly, resulting
in unexpected accidents. Make sure to switch the function knob when the motor is at a complete stop.
○
If the tine chisel is used at the position of “rotation hammering”, the tool can start to rotate, resulting
in unexpected accidents. Make sure that they are used at the position of “hammering”.
(1) Switching to “hammering”
(a) Push the locked Pushbutton, release lock and turn the function knob.
(b) Align
▲
of the function knob and of the knob support as illustrated in
Fig. 5.
(c) Release the locked Pushbutton to lock the function knob.
CAUTION:
Turn the function knob (do not push the locked Pushbutton) to check if it is completely locked and
make sure that it does not turn.
4. Install the
Orientation Staff Guage (Fig.6)
(1) Loosen the papilionaceous short bolt on the side handle, and insert the staff gauge into the mounting
hole on the side handle.
(2) Adjust the staff gauge position according to the depth of the hole and tighten the papilionaceous
short bolt securely.
5. Warming up (Fig. 7)
The grease lubrication system in this unit may require warming up in cold regions.
Position the end of the bit so makes contact with the concrete, turn on the switch and perform the
warming up operation. Make sure that a hitting sound is produced and then use the unit.
CAUTION:
When the warming up operation is performed, hold the side handle and the main body
securely with both hands to maintain a secure grip and be careful not to twist your body by the
jammed drill bit.
HOW TO HANDLE A CORE BIT
When a core bit is used, large diameter holes and blind holes can be drilled. In this case, use optional
accessories for core bits (such as a dill bit and core bit shank) for more efficient operation.
1. Mounting
CAUTION:
Prior to mounting a core bit, always disconnect the plug from the power supply receptacle.
(1)
Mount the core bit to the core bit shank.
Fig. 8
Lubricate the thread of the core bit shank to facilitate disassembly.
(2) Mount the core bit to the rotary hammer
Fig. 9
(3) Engage the drill bit with the core bit, and turn the drill bit to the left or the right so that it does
not fall even if it faces downward .
Fig. 10
2. Drilling holes
（
Fig. 11
）
(1) Connect the plug to the power source.
(2) By straightly and gently pressing dill bit to the wall or floor surface, the entire surface of the core
bit tip attains contact to start the hole drilling job.
(3) When boring about 5mm in depth the position of the hole will be established. Bore after that
removing the drill bit from core bit.
CAUTION:
When removing the drill bit, turn OFF the switch and disconnect the plug from the receptacle.
