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SKU 90288

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

Specifications

Overall Dimensions

8-5/8” L with handle

Sanding Pad

3/8” Thick x 5-3/4” Diameter 

Adhesive-backed Paper Re-

quired

Air Inlet

1/4” - 18 NPT

Inlet Screen

20-Mesh or Finer Required

CFM @ 90 PSI

8.0 CFM

Recommended Operating Pressure 90 PSI
No-Load Speed

10,000 RPM

Save This Manual

You will need the manual for the safety warnings and precautions, assembly in-

structions, operating and maintenance procedures, parts list and diagram.  Keep 

your invoice with this manual.  Write the invoice number on the inside of the front 

cover.  Keep the manual and invoice in a safe and dry place for future reference.

Safety Warnings and Precautions

WARNINg: When using tool, basic safety precautions should always be fol-

lowed to reduce the risk of personal injury and damage to equipment.
Read all instructions before using this tool!

1. 

Keep work area clean

. Cluttered areas invite injuries.

2. 

Observe work area conditions

. Do not use machines or power tools in damp 

or wet locations.  Don’t expose to rain.  Keep work area well lighted.  Do not 

use electrically powered tools in the presence of flammable gases or liquids.

3. 

Keep children away

. Children must never be allowed in the work area.  Do 

not let them handle machines, tools, or extension cords.

4. 

Store idle equipment

. When not in use, tools must be stored in a dry location 

to inhibit rust.  Always lock up tools and keep out of reach of children.

5. 

Use the right tool for the job. 

Do not attempt to force a small tool or attach-

ment to do the work of a larger industrial tool. There are certain applications 

for which this tool was designed. It will do the job better and more safely at the 

rate for which it was intended. Do not modify this tool and do not use this tool 

for a purpose for which it was not intended.

6. 

Dress properly

. Do not wear loose clothing or jewelry as they can be caught 

REV 07i

Summary of Contents for 90288

Page 1: ... rights reserved No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools Diagrams within this manual may not be drawn proportionally Due to continuing improvements actual product may differ slightly from the product described herein Tools required for assembly and service may not be included For te...

Page 2: ...all instructions before using this tool 1 Keep work area clean Cluttered areas invite injuries 2 Observe work area conditions Do not use machines or power tools in damp or wet locations Don t expose to rain Keep work area well lighted Do not use electrically powered tools in the presence of flammable gases or liquids 3 Keep children away Children must never be allowed in the work area Do not let t...

Page 3: ...rting Be sure the air compressor switch is in the Off position when not in use and before connecting to this tool Do not carry any tool with your finger on the trigger whether it is plugged in or not 13 Stay alert Watch what you are doing use common sense Do not operate any tool when you are tired 14 Take caution as some woods contain preservatives such as copper chro mium arsenate CCA which can b...

Page 4: ...rilling and other construction activities contain chemicals known to the State of California to cause cancer birth defects or other reproductive harm Some examples of these chemicals are Lead from lead based paints Crystalline silica from bricks and cement or other masonry products Arsenic and chromium from chemically treated lumber Your risk from these exposures varies depending on how often you ...

Page 5: ...manual and the instruction manual for the Air Compressor being used This air tool requires lubrication during operation For best results it is recom mended to have an oiler and water filter in line with the air supply as shown in the diagram above This will extend the life of the tool To Attach Sanding Paper And The Pad 1 Ensure that the Pad is firmly screwed onto the Drive Spindle 38 The Spindle ...

Page 6: ...all attachments are secure before turning on the tool 5 Grip the Handle with your left hand and the Housing 1 with your right reverse if you are left handed Depress the Trigger 16 with your right hand to turn the tool on Allow the motor to reach its full speed before sanding Make sure the Air Sander is running properly Make sure the Pad is rotating evenly and all parts appear to be working properl...

Page 7: ... Blade 5 28 Work Spindle 1 29 Woodruff Key 1 30 Rear Gasket 1 31 Rear Cover 1 32 Screw 2 Part Description Q ty 33 Screw 2 34 Balancer 1 35 Screw 1 36 Screw 1 37 Bearing 1 38 Drive Spindle 1 39 Retainer Ring 1 40 Cap 1 41 Spindle Lock 1 42 Washer 1 43 Screw 1 44 Pad 1 45 Washer 1 46 Wrench 1 PLEASE READ THE FOLLOWING CAREFULLY THE MANUFACTURER AND OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM IN TH...

Page 8: ...Page 8 SKU 90288 For technical questions please call 1 800 444 3353 Assembly Drawing REV 04i 04k 05e 06d 10f 46 ...

Page 9: ...ntal or consequential damages so the above limitation of exclusion may not apply to you This warranty is expressly in lieu of all other warranties express or implied including the warranties of merchantability and fitness To take advantage of this warranty the product or part must be returned to us with trans portation charges prepaid Proof of purchase date and an explanation of the complaint must...

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