English

Lubricate the thread of the core bit shank to facilitate disassembly.

(2)Mount the core bit shank to the rotary hammer. (Fig. 20)

Core bit

Thread

Core bit shank

Fig. 19

Fig. 20

(3)Insert the center pin into the guide plate until it stops.

(4)Engage the guide plate with the core bit, and turn the guide plate to left or right so that it does not fall even if it faces downward. (Fig. 21)

 

Guide plate

Center pin

Core bit tip

 

Core bit

 

Fig. 21

2. How to bore (Fig. 22)

(1)Connect the plug to the power source.

(2)A spring is installed in the center pin. Push it lightly to the wall or the floor straight. Connect all over the surface of

the core bit tip and start operating.

(3)When boring about 3/16" (5 mm) in depth the position of the hole will establish. Bore after that removing the center pin and the guide plate from core bit.

(4)Application of excessive force will not only expedite the work, but will deteriorate the tip edge of the drill bit, resulting in reduced service life of the rotary hammer.

Fig. 22

CAUTION:

When removing the center pin and the guide plate, turn OFF the switch and disconnect the plug form the receptacle.

3.Dismounting. (Fig. 23)

Remove the core bit shank from the rotary hammer and strike the head of the core bit shank strongly two or three times with the hammer holding the core bit, then the thread becomes loose and the core bit can be removed.

Core bit shank

Fig. 23

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