troubleshooting

Problem

Possible Cause

Solution

 

 

 

Noisy operation

Incorrect belt tension

Adjust belt tension.

 

Dry spindle

Lubricate spindle.

 

Loose spindle pulley or motor pulley

Tighten set screws in pulleys.

 

 

 

Bit burns or smokes

Incorrect speed

Change speed.

 

Chips not coming out of hole

Retract bit frequently to clear

 

 

chips.

 

Dull bit

Sharpen or replace bit.

 

Feeding too slow

Feed fast enough; allow drill to cut.

 

Not lubricated

Lubricate bit for metal work.

 

 

 

Excessive drill runout or wobble

Bent bit

Replace bit.

 

Bit not properly installed in chuck

Install bit properly.

 

Chuck not properly installed

Install chuck properly.

 

Worn spindle bearings

Contact authorized service center.

 

 

 

Drill bit binds in workpiece

Excessive feed pressure

Reduce feed pressure.

 

Improper belt tension

Adjust belt tension.

 

 

 

Workpiece support loosens

Workpiece not supported or clamped

Check support and/or reclamp

 

properly

workpiece.

 

 

 

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Ryobi DP121L manual Troubleshooting, Problem Possible Cause Solution