Electric Jackhammer
6
Set-Up
Prior to Operation
Power Source
Ensure that the power source to be utilised conforms to the power requirements specified on the product
nameplate.
Grounding
This tool should be grounded while in use to protect the operator from electric shock. The tool is equipped with a
three-conductor cord and grounding type plug to fit the proper grounding type receptacle. The green (or green
and yellow) conductor in the cord is the grounding wire. Never connect the green (or green and yellow) wire to a
live terminal.
Power Switch
Ensure that the power switch is in the OFF position. If the plug is connected to a power receptacle while the
power switch is in the ON position, the power tool will start operating immediately, inviting serious accidents.
Extension Cord
When the work area is removed from the power source, use an extension cord of sufficient thickness and rated
capacity. The extension cord should be kept as short as practicable.
25mm
1. Raise the retainer and insert the shank portion of a drill bit into the hexagonal hole on the front cover until it
reaches the extremity (Fig. 1-1 in the
2. By slightly tapping the top of the bit holder with a wooden mallet, replace the bit holder to grip the bit firmly.
38mm
1. Turn the stopper to the direction of arrow A, turn the retainer to the direction of arrow B. After that, insert the
tool shank into the hexagon hole on the front cover (Fig. 1 -2 in the
2. Pushing the stopper to the direction of arrow A, turn the retainer to arrow B in the opposite direction. After
that, remove the stopper.
NOTE
: When dismounting the bull points, reverse the procedures described above.
Operation
How to Use the Jackhammer
How to Drill Holes
1. Pull the switch trigger after applying the drill bit tip to the drilling position.
2. It is unnecessary to forcibly press the drill main body. It is sufficient to slightly press the drill to an extent that
clips are freely discharged.
CAUTION
: Although a safety clutch is built in this drill, the drill bit will suddenly stop when it strikes against a
buried reinforcing bar, and the drill will start to reverse its spin as a reaction.
Always continue a hole-drilling job while strongly gripping both the side handle and the handle.
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