Ryobi DP121L Operator's Manual download pdf (Page 23)

TROUBLESHOOTING

Problem Possible Cause Solution

Noisy operation Incorrect belt tension

Dry spindle

Loose spindle pulley or motor pulley

Adjust belt tension.

Lubricate spindle.

Tighten set screws in pulleys.

Bit burns or smokes Incorrect speed

Chips not coming out of hole

Dull bit

Feeding too slow

Not lubricated

Change speed.

Retract bit frequently to clear

chips.

Sharpen or replace bit.

Feed fast enough; allow drill to cut.

Lubricate bit for metal work.

Excessive drill runout or wobble Bent bit

Bit not properly installed in chuck

Chuck not properly installed

Worn spindle bearings

Replace bit.

Install bit properly.

Install chuck properly.

Contact authorized service center.

Drill bit binds in workpiece Excessive feed pressure

Improper belt tension

Reduce feed pressure.

Adjust belt tension.

Workpiece support loosens Workpiece not supported or clamped

properly

Check support and/or reclamp

workpiece.

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Ryobi DP121L Operator's Manual Page 23