Harbor Freight Tools Four Inch Belt and 6 Inch Disk Sander, 93981 Troubleshooting

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Mounting Sanding Disc

1.Remove Table (59) surrounding Sanding Disc (23).

2.Peel off old Sanding Disc.

3.Align perimeter of new Sanding Disc (23) over Aluminum Disc (22). When aligned, press disc firmly onto Disc.

Most Sanding Discs have self-adhering properties. Others may require application of an appropriate glue (not supplied).

4.Replace Table (59).

Sanding Belt Replacement

1.Push the Belt Tension Lever (34) to the right to loosen the Belt (4).

2.Slide the old Sanding Belt (4) off the Idler Roller (41) and Drive Drum (5).

3.Slide the new Sanding Belt (4) onto the Idler Roller (41) and Drive Drum (5). Refer to the Parts List for correct Belt (4) replacement size.

4.Push the Belt Tension Lever (34) to the left to tighten the Belt (4).

5.Turn on the Belt Sander to test the new Belt. If the Belt tracks to one side, go to page 11 and follow the procedure for Belt Tracking Adjustment.

Troubleshooting

SYMPTOM

PROBABLE CAUSE

REMEDY

Belt Sander does not

Not plugged in to electrical outlet

Connect to outlet

turn on

 

 

 

Switch key not inserted into Switch

Insert Switch Key, then push

 

 

Switch to On position

 

GFCI or facility circuit breaker open

Reset circuit breakers

 

Power Switch defective

Replace Switch

 

Motor or wiring problem

Repair with a qualified technician

Motor slows when

V-Belt too tight

A qualified technician needs to

sanding

 

loosen tension

 

Sanding with too much pressure on

Apply less pressure when sanding

 

stock

 

Sanding Belt runs off

Not tracking properly

Adjust Sanding Belt Tracking

Idler Roller

 

 

Wood burns while

Sanding Disc or Belt is loaded with

Clean or replace Disc or Belt.

sanding

debris

 

Sander makes exces-

V-Belt too tight

A qualified technician needs to

sive noise

 

loosen

SKU 93981

For technical questions, please call 1-800-444-3353

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Contents 93981 Assembly and Operating InstructionsGeneral Safety Rules SpecificationsElectrical Safety Save This ManualPersonal Safety Service Specific Safety Rules for This ProductTool Use and Care SKU Grounded Tools Tools With Three Prong Plugs GroundingDouble Insulated Tools Tools With Two Prong Plugs Feet Extension CordsSymbology Assembly InstructionsFeet Placement UnpackingMounting Sanding Disc Table InstallationOperating Instructions Controls and AdjustmentsMounting the Block Stop Sanding Safety Tips On / Off SwitchLeveling Table Assembly Adjusting the Sanding Belt TrackingAdjusting the Sanding Belt for Vertical Operation INSPECTION, MAINTENANCE, and CleaningSanding Belt Replacement TroubleshootingPlease Read the Following Carefully Parts ListRecord Product’s Serial Number Here Assembly DrawingWarranty card Limited 90 day/1 Year warranty