Ryobi D550H manual Adjusting the Speed, Changing the Rotation

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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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Contents Save this Manual for Future Reference Operators ManualIntroduction Table of ContentsWork Area General Safety RulesElectrical Safety Personal SafetyAdditional Safety Rules Specific Safety RulesService Symbol Name DESIGNATION/EXPLANATION SymbolsInstructions SpecificationsUnpacking ApplicationsFeatures Chuck Mode Depthselector Gauge ROD LOCK-ON ButtonChuck Jaws Drill BIT Chuck Collar Right Wrong OperationInserting Bits Removing BitsHandle Assembly Adjust Depth Gauge ROD Adjusting the Handle AssemblyAdjusting the Depth Gauge ROD Adjusting the Drill ModeChanging the Rotation Adjusting the SpeedDrilling LOCK-ON Button Switch TriggerTurning the Hammer Drill ON/OFF Locking onHelpful Tips MaintenanceGeneral LubricationMallet Chuck Jaws HEX KEY Screwdriver Removing the ChuckTightening the Chuck Page Service Model NO. and Serial no