English
(2)Mount the core bit shank on the main body in the same manner as in mounting the drill bit and the bull point. (Fig. 13)
(3)Insert the center pin into the guide plate until it reaches the extremity.
(4)Fit in the guide plate by aligning its concaved portion with the core bit tip. When the position of the concave is shifted by turning the guide plate right or left, the guide plate never slips off even when the rotary hammer is used in a downward direction. (Fig. 14)
2. Drilling holes
(1) | Insert the plug into a power supply receptacle. |
(2) | A spring is built in the center pin. By straightly |
Fig. 13
Guide plate
Center pin
and gently pressing it to the wall or floor |
surface, the entire surface of the core bit tip |
attains contact to start the hole drilling job. (Fig. |
15) |
(3) When the hole depth reaches approximately |
3/16" (5 mm), the hole position can be |
determined. Then remove the center pin and |
Core bit
Core bit tip
guide plate from the core bit and continue the |
hole drilling job. |
CAUTION:
When removing the center pin and guide plate, always disconnect the plug from the power supply receptacle.
3.How to dismount the core bit (Fig. 16)
(1) By holding the rotary hammer (with the core bit inserted) in an upward position, drive the rotary hammer to repeat impact operation two or three times, whereby the screw is loosened and the rotary hammer becomes ready for disassembly.
(2) Remove the core bit shank from the rotary hammer, hold the core bit with one hand, and strongly strike the head of the hexagonal portion of the core bit shank with a hand hammer two or three times, whereby the round head screw is loosened and the rotary hammer is ready for disassembly.
Fig. 14
Fig. 15
Core bit
Core bit shank
Fig. 16
14