Makita
Power Sander

Model #9903 Makita 3 x 21" belt sander

Here are the repair parts and diagrams for your Makita 9903 3 x 21" belt sander. 

The diagram(s) below can help you find the right part.  If you’d like help, we invite you to call our customer service number at the top of the page, or click chat.

On this page, you can also find any manuals, installation guides and error code tables associated with this model.

For advice on diagnosing problems with appliances, lawn & garden equipment and other products, check out the videos, repair guides and articles in our DIY section.

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Showing 10 of 57 parts

Screw

#28

3" x 21" belt sander Diagram

Screw

Part #251815-0

The manufacturer no longer makes this part, and there's no substitute part

Ring

#43

3" x 21" belt sander Diagram

Ring

Part #961052-5

The manufacturer no longer makes this part, and there's no substitute part

Hex Nut

#32

3" x 21" belt sander Diagram

Hex nut

Part #931402-8

The manufacturer no longer makes this part, and there's no substitute part

Shoulder S

#49

3" x 21" belt sander Diagram

Shoulder s

Part #265059-6

The manufacturer no longer makes this part, and there's no substitute part

Pulley

#33

3" x 21" belt sander Diagram

Pulley

Part #222156-1

The manufacturer no longer makes this part, and there's no substitute part

Plate

#61

3" x 21" belt sander Diagram

Plate

Part #151749-6

The manufacturer no longer makes this part, and there's no substitute part

Washer

#29

3" x 21" belt sander Diagram

Washer

Part #253707-9

The manufacturer no longer makes this part, and there's no substitute part

Spring

#30

3" x 21" belt sander Diagram

Spring

Part #231225-7

The manufacturer no longer makes this part, and there's no substitute part

Bearing

#10

3" x 21" belt sander Diagram

Bearing

Part #211088-7

The manufacturer no longer makes this part, and there's no substitute part

Brush Holder

#14

3" x 21" belt sander Diagram

Brush holder

Part #643750-0

The manufacturer no longer makes this part, and there's no substitute part