CDM1H HAND-HELD CORE DRILL — OPERATION
Before Operating
1.Place the valve on the water source to the ON position, and
then turn the water valve on the core drill (Figure 8) to the ON position (down). Verify that water is flowing smoothly and evenly. 
Figure 10. Water Valve (ON Position)
2.If water is not flowing, check all connections and correct the problem.
3.Place the core drill against the surface (Figures 9 and 10) to be drilled.Hold drill firmly, and squeeze the power ON/OFF switch to begin drilling.
Warning - Binding of Output Shaft
This core drill can whip violently if it comes in contact with rebar or coarse material which would cause the shaft to bind. Be extremely careful at all times when drilling. The possibility exists of the core drill severely twisting the wrist or striking the body with excessive force.
ALWAYS drill with uniform pressure and keep the bit straight. When drilling through steel rebar, reduce the pressure to avoid overloading the motor.
NEVER use the adjustable shoulder stock to pull the bit out of the ground if the bit gets stuck in the hole.
ALWAYS be on the lookout for exposed wiring or buried electrical connections when drilling.
Figure 11. Wall Drilling Application
DO NOT overreach. Keep proper footing and balance at all times. Proper footing and balance enables better control of the core drill in unexpected situations.
Figure 12. Floor Drilling Application
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