Ryobi D550H manual Adjusting the Speed, Changing the Rotation

OPERATION

ADJUSTING THE SPEED

See Figure 7.

The hammer drill has a two-speed knob that provides a high speed of approximately 3,000 RPM and a low speed of approximately 1,000 RPM (stated speeds are with the trigger switch in the “Full-on” position).

Follow these directions to adjust the speed.

■Unplug the hammer drill.

WARNING:

Failure to unplug the tool could result in accidental starting causing possible serious injury.

■For high speed: Rotate the two-speed knob clock- wise, aligning the indicator mark with the “2.”

■For low speed: Rotate the two-speed knob counter- clockwise, aligning the indicator mark with the “1.”

If you have difficulty changing from one gear range to the other, turn the chuck by hand until the gears engage.

CAUTION:

Never change gears while the tool is running. Failure to obey this caution could result in serious damage to the drill.

COUNTERCLOCKWISE

TO LOW SPEED

1 2

CLOCKWISE TO

HIGH SPEED

Fig. 7

FORWARD

ROTATION

CHANGING THE ROTATION

See Figure 8.

The direction of the chuck is controlled by the lever located above the switch trigger.

Follow these directions to change the rotation.

■Unplug the hammer drill.

WARNING:

Failure to unplug the tool could result in accidental starting causing possible serious injury.

■For forward rotation: Move the lever to the left.

■For reverse rotation: Move the lever to the right.

NOTE: The hammer drill will not run unless the lever is pushed fully to the left or right.

CAUTION:

The hammer drill is not designed for reverse ham- mering. Failure to obey this caution may result in property damage.

REVERSE

ROTATION

Fig. 8

DEPRESS SWITCH TRIGGER TO

TURN HAMMER DRILL ON

Fig. 9

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