2-3/4” x 17-1/2” air Inline Sander Model 91773 Set up and Operating Instructions Visit our website at: http://www.harborfreight.com Read this material before using this product. Failure to do so can result in serious injury. Save this manual. Copyright© 2004 by Harbor Freight Tools®. All 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.
Contents Safety Alert Symbol and Signal Words ���������������������������������� 3 IMPORTANT SAFETY INSTRUCTIONS �������������������������������3 General ������������������������������������������������ 3 Work area ������������������������������������������� 3 Personal safety ������������������������������ 3 Tool use and care ��������������������������� 4 Service ������������������������������������������������� 5 Air source ������������������������������������������� 5 Symbols and Specific Safety Instruc
Save This Manual Keep this manual for the safety warnings and precautions, assembly, operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the back of the manual near the assembly diagram (or month and year of purchase if product has no number). Keep this manual and the receipt in a safe and dry place for future reference.
tool while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operating the tool increases the risk of injury to persons. b. Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep hair, clothing, and gloves away from moving parts. Loose clothes, jewelry, or long hair increases the risk of injury to persons as a result of being caught in moving parts. c. Avoid unintentional starting.
specific tool model, increases the risk of injury to persons. Service a. b. c. Tool service must be performed only by qualified repair personnel. When servicing a tool, use only identical replacement parts. Use only authorized parts. Use only the lubricants supplied with the tool or specified by the manufacturer. Symbols and Specific Safety Instructions Symbol Definitions Symbol Property or statement .../min Revolutions or reciprocation per minute PSI CFM SCFM Air source a. b.
5. 6. 7. 8. 9. Do not lay the tool down until it has come to a complete stop. Moving parts can grab the surface and pull the tool out of your control. WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities, contains chemicals known [to the State of California] to cause cancer, birth defects or other reproductive harm.
that common sense and caution are factors which cannot be built into this product, but must be supplied by the operator. Save these instructions. REV 10f SKU 91773 For technical questions, please call 1-800-444-3353.
Functional Description Specifications Operating Air Pressure 90 PSI Air Inlet 1/4” -18 NPT Maximum Speed* 3,000 SPM Air Consumption 5 SCFM @ 90 PSI Recommended Hose Size 3/8” Dia. Pad Dimensions 2-3/4” x 15-3/4” Sandpaper (sold separately) 2-3/4” x 17-1/2” Item # 5263 Unpacking When unpacking, make sure that the item is intact and undamaged. If any parts are missing or broken, please call Harbor Freight Tools at 1-800-444-3353 as soon as possible.
a ball valve because it can be closed quickly. Note: If an automatic oiler system is not used, add a few drops of Pneumatic Tool Oil to the airline connection before operation. Add a few more drops after each hour of continual use. 2. Attach an air hose to the compressor’s air outlet. Connect the air hose to the air inlet of the tool. Other components, such as a coupler plug and quick coupler, will make operation more efficient, but are not required.
Operating Instructions Read the entire Important Safety Information section at the beginning of this manual including all text under subheadings therein before set up or use of this product. Tension bar Clamp Tension bar Inspect tool before use, looking for damaged, loose, and missing parts. If any problems are found, do not use tool until repaired.
make sure the sandpaper is taut. Hold in place with the screwdriver and lower the tension bar. To remove the sandpaper, pull up on the tension bar at each end of the Inline Sander and pull out the sandpaper. Work Piece and Work Area Set Up 1. Designate a work area that is clean and well-lit. The work area must not allow access by children or pets to prevent distraction and injury. 2.
User-Maintenance Instructions Procedures not specifically explained in this manual must be performed only by a qualified technician. To prevent serious injury from accidental operation: Turn off the tool, detach the air supply, safely discharge any residual air pressure in the tool, and release the Trigger before performing any inspection, maintenance, or cleaning procedures.
Troubleshooting Problem Possible Causes Decreased output. 1. Not enough air pressure and/ or air flow. Likely Solutions 1. Check for loose connections and make sure that air supply is providing enough air flow (CFM) at required pressure (PSI) to the tool’s air inlet. Do not exceed maximum air pressure. 2. Clean around trigger to ensure free movement. 3. Lubricate using air tool oil and grease according to directions. 4. Clean air inlet screen of buildup. 2. Obstructed trigger. 3.
parts list and ASSEMBLY DIAGRAM Part 1 2 3 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Description Air Inlet Rear Head Parking O-Ring O-Ring Socket Screw Switch Control Bat O-Ring Spring Body Assembly Piston Ring Piston Wear Button Bearing Shaft Gear Actuator Valve Qty 1 1 1 2 2 1 1 1 1 1 2 2 8 4 2 2 1 Part 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 Description Actuator Gear Front Head Socket Cap Screw Knob Adjustment Shaft Plunger Bolt Trigger Handle Roll Pin Screw Side Strap Bolt Carrier Assembly B
Limited 1 Year warranty Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards, and warrants to the original purchaser that this product is free from defects in materials and workmanship for the period of one year from the date of purchase (90 days if used by a professional contractor or if used as rental equipment).
