Ryobi DP121 - Manual (Page 23)

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.