Ryobi HP472 Manuel d'utilisateur télécharger pdf (Page 15)

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OPERATION

WARNING:

Battery tools are always in operating condition. There-

fore, switch should always be locked when not in use or

carrying at your side.

DRILLING

See Figure 10.

When drilling hard, smooth surfaces, use a center punch

to mark the desired hole location. This will prevent the drill

bit from slipping off center as the hole is started. However,

the lower speed feature allows starting holes without center

punching if desired. To accomplish this, simply operate the

drill at lower speed until the hole is started.

The material to be drilled should be secured in a vise or with

clamps to keep it from turning as the drill bit rotates.

Hold tool firmly and place the bit at the point to be drilled.

Depress the switch trigger to start tool.

Move the drill bit into the workpiece, applying only enough

pressure to keep the bit cutting. Do not force or apply side

pressure to elongate a hole.

WARNING:

Be prepared for binding at bit breakthrough. When these

situations occur, the drill has a tendency to grab and kick

opposite to the direction of rotation and could cause loss

of control when breaking through material. If you are not

prepared, this loss of control can result in possible seri-

ous injury.

When drilling metals, use a light oil on the drill bit to keep it

from overheating. The oil will prolong the life of the bit and

increase the drilling action.

If the bit jams in workpiece or if the drill stalls, release switch

trigger immediately. Remove the bit from the workpiece and

determine the reason for jamming.

LEVEL DRILLING

See Figure 11.

There is a level recessed in the motor housing on top of the

drill. It can be used to keep drill bit level during horizontal

drilling operations.

Fig. 10

LEVEL

Fig. 11

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Ryobi HP472 Manuel d'utilisateur Page 15