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2-3/4” x 17-1/2”
air inline Sander
Model 91773
Set up and Operating inStructiOnS
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read this material before using this product.
Failure to do so can result in serious injury.
SaVe thiS Manual.
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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. Diagrams within this ma
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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 Ser Vice ................................................. 5 air SOurce ........................................... 5 SyMbOlS and SpeciFic
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cautiOn, without the SaVe thiS Manual safety alert symbol, is Keep this manual for the safety warnings used to address practices not and precautions, assembly, operating, related to personal injury. inspection, maintenance and cleaning procedures. Write the product’s serial number in the back of the manual near the assembly iMpOrtant SaFety diagram (or month and year of purchase if inStructiOnS product has no number). Keep this manual inStructiOnS pertaining and the receipt in a sa
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tool while tired or under the influence by hand or against the body is unstable of drugs, alcohol, or medication. A and is able to lead to loss of control. moment of inattention while operating b. do not force the tool. Use the correct the tool increases the risk of injury to tool for the application. The correct tool persons. will do the job better and safer at the rate b. dress properly. do not wear loose for which the tool is designed. clothing or jewelry. contain long hair. c. do not
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specific tool model, increases the risk of SyMbOlS and SpeciFic injury to persons. SaFety inStructiOnS Service Symbol Definitions a. t ool service must be performed only by qualified repair personnel. Symbol property or statement b. When servicing a tool, use only Revolutions or reciprocation per minute .../min identical replacement parts. use only authorized parts. Pounds per square inch of pressure pSi c. use only the lubricants supplied Cubic Feet per Minute flow cFM with the tool or sp
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5. Do not lay the tool down until it has come Vibration precautions to a complete stop. Moving parts can This tool vibrates during use. Repeated grab the surface and pull the tool out of or long-term exposure to vibration may cause your control. temporary or permanent physical injury, 6. WARNING: Some dust created by particularly to the hands, arms and shoulders. power sanding, sawing, grinding, To reduce the risk of vibration-related injury: drilling, and other construction activities
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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. Page 7
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unpacking FunctiOnal deScriptiOn When unpacking, make sure that the Specifications item is intact and undamaged. If any parts are missing or broken, please call Harbor Operating Air Pressure 90 PSI Freight Tools at 1-800-444-3353 as soon as Air Inlet 1/4” -18 NPT possible. Maximum Speed* 3,000 SPM • This air tool may be shipped with a Air Consumption 5 SCFM @ 90 PSI protective plug covering the air inlet. Recommended Hose 3/8” Dia. Remove this plug before set up. Size Pad Dimensions 2-3
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a ball valve because it can be closed pressure of 90 PSI at any time. Adjust quickly. the pressure gradually, while checking the air output gauge to set the right note: If an automatic oiler system is not pressure range. used, add a few drops of Pneumatic Tool Oil to the airline connection before 8. Inspect the air connections for leaks. operation. Add a few more drops after Repair any leaks found. each hour of continual use. 9. If the tool will not be used at this time, 2. Attach an a
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Operating inStructiOnS read the entire iMpOrtant SaFety inFOrMatiOn Tension bar section at the beginning of this manual including all text under Clamp subheadings therein before set up Tension bar or use of this product. inspect tool before use, looking Clamp for damaged, loose, and missing Figure 2 parts. if any problems are found, To Install the sandpaper: do not use tool until repaired. Raise t ool Set up Tension bar tO preVent SeriOuS injury FrOM accidental OperatiOn: t urn off
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make sure the sandpaper is taut. Hold in 4. Firmly grip the Handle (27) with one place with the screwdriver and lower the hand and the Knob (22) your other hand. tension bar. 5. Depress the Trigger (26) before making To remove the sandpaper, pull up on contact with the work surface to ensure the tension bar at each end of the Inline the Inline Sander does not jump from Sander and pull out the sandpaper. your hands. 6. Move the Inline Sander along the work Work piece and Work area Set up sur
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daily - air Supply Maintenance: uSer-Maintenance Every day, perform maintenance on the inStructiOnS air supply according to the component manufacturers’ instructions. The Procedures not specifically lubricator’s oil level needs to be explained in this manual must maintained and the moisture filter must be performed only by a qualified be regularly drained. Performing routine technician. maintenance on the air supply will allow tO preVent the tool to operate more safely and will
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t roubleshooting problem possible causes likely Solutions Decreased output. 1. Not enough air pressure and/ 1. Check for loose connections and make sure that air or air flow. supply is providing enough air flow (CFM) at required pressure (PSI) to the tool’s air inlet. do not exceed maximum air pressure. 2. Obstructed trigger. 2. Clean around trigger to ensure free movement. 3. Incorrect lubrication or not 3. Lubricate using air tool oil and grease according to enough lubrication. direction
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partS liSt and aSSeMbly diagraM part description Qty part description Qty 1 Air Inlet 1 19 Actuator Gear 1 2 Rear Head 1 20 Front Head 1 3 Parking 1 21 Socket Cap Screw 7 5 O-Ring 2 22 Knob 1 6 O-Ring 2 23 Adjustment Shaft 1 7 Socket Screw 1 24 Plunger 1 8 Switch Control Bat 1 25 Bolt 2 9 O-Ring 1 26 Trigger 1 10 Spring 1 27 Handle 1 11 Body Assembly 1 28 Roll Pin 1 12 Piston Ring 2 29 Screw 4 13 Piston 2 30 Side Strap 2 14 Wear Button 8 31 Bolt 8 15 Bearing 4 32 Carrier Assembly 1 16 Shaft 2 33
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liMited 1 year W arranty 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). This warranty does not apply to damage due directly or indirectly, to misuse, abuse, negligence or accidents, repai
