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U.S. General 93874 Assembly And Operating Instructions Manual

6 hp - 8 gallon capacity
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AIR COMPRESSOR

6 HP - 8 GALLON CAPACITY
ASSEMBLY AND OPERATING INSTRUCTIONS
A. You do not put compressor oil in the Compressor's crankcase prior to its first use.
Before each use, check the oil level. Never run the Compressor with low or no compres-
sor oil. Running the Compressor with low or no oil will permanently damage the unit.
B. You do not put engine oil in the Engine's crankcase prior to its first use.
Before each use, check the oil level. Never run the Engine with low or no engine oil.
Running the Compressor with low or no oil will permanently damage the unit.
C. You drop the Air Compressor.
Always lift the Air Compressor using its Handle.
Visit our Web site at: http://www.harborfreight.com
©
Copyright 2006 by Harbor Freight Tools
manual or any artwork contained herein may be reproduced in any shape or form
without the express written consent of Harbor Freight Tools.
For technical questions, please call 1-800-444-3353.
Model 93874
WARNING!
Your Warranty Is Voided If:
3491 Mission Oaks Blvd., Camarillo, CA 93011
TO PREVENT SERIOUS INJURY,
READ AND UNDERSTAND ALL WARNINGS
AND INSTRUCTIONS BEFORE USE.
®
. All rights reserved. No portion of this
Do to continuing improvements,
actual product may differ slightly
from the product described herein.
®

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Summary of Contents for U.S. General 93874

  • Page 1: Air Compressor

    AND INSTRUCTIONS BEFORE USE. © Copyright 2006 by Harbor Freight Tools manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools. For technical questions, please call 1-800-444-3353. Model 93874 WARNING! ®...

  • Page 2: Product Specifications

    Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. Power tools create sparks which may ignite the dust or fumes. SKU 93874 For technical questions, please call 1-800-444-3353. PRODUCT SPECIFICATIONS...

  • Page 3: Personal Safety

    Maintain tools with care. Properly maintained tools with a sharp cutting edge are less likely to bind and are easier to control. Do not use a damaged tool. Tag SKU 93874 For technical questions, please call 1-800-444-3353. PERSONAL SAFETY...

  • Page 4: Specific Safety Rules And Precautions

    C. You drop the Air Compressor. Always lift and lower the Air Compressor using its Handle. Maintain labels and nameplates on the Air Compressor. These carry important information. If unreadable or missing, contact Harbor Freight Tools for a replace- ment. DANGER! This Air Compressor is NOT equipped and should not be used “as-is”...
  • Page 5 Harbor Freight Tools disclaims any liability whatsoever for any loss, personal injury, or damage. DANGER! Never attempt to repair or modify the Tanks (12). Welding, drilling, or any other modification will weaken the Tanks resulting in damage from rupture or explosion.
  • Page 6 To extend the life of your tools and equipment, it is recommended that you install an oiler and water filter inline with the air output line of the Air Compressor. (See Figure A.)

  • Page 7: Mechanical Precautions

    Always wear ANSI approved hearing protection when operating or working around the Compressor when it is running. WARNING! This product contains brass, which is a chemical known to the SKU 93874 For technical questions, please call 1-800-444-3353. CHEMICAL PRECAUTIONS NOISE PRECAUTIONS MISC.
  • Page 8 When unpacking, check to make sure all the parts shown on the Parts List on page 16 are included. If any parts are missing or broken, please call Harbor Freight Tools at the number shown on the cover of this manual as soon as possible.
  • Page 9 Then, replace the Fuel Tank Cap. Thereafter, check the Fuel Tank for the amount of unleaded gasoline. When necessary, refill the Fuel Tank. (See Engine manufacturer’s manual.) SKU 93874 For technical questions, please call 1-800-444-3353. FIGURE B OIL BREATHER PLUG (37A)

  • Page 10: Operating Instructions

    To Install A Quick Coupler: Prior to use, the Air Compressor requires the attachment of a Quick Coupler (not included) to its Pressure Regulator (29). To do so, make sure the screen Air Filter within the Pressure Regulator is properly seated. Wrap approximately 3” of Pipe Thread Seal Tape (not included) around the male threads of the Quick Coupler.
  • Page 11 Always start the compressor with the regulator adjusted to its lowest setting to prevent tool damage or explosion, resulting in PERSONAL INJURY. FIGURE E TOOL PRESSURE REGULATOR (29) QUICK COUPLER (NOT INCLUDED) SKU 93874 For technical questions, please call 1-800-444-3353. TOOL PRESSURE GAUGE (55) TANK PRESSURE GAUGE (46) TOOL...
  • Page 12 Remove any moisture in the Compressor’s Tanks (12) by opening the two Drain Plugs (25). Then, retighten the Drain Plugs. (See Figure D.) Allow the Air Compressor to completely cool. Then store the unit in a clean, dry, safe location out of reach of children and other unauthorized people.

  • Page 13: Inspection, Maintenance, And Cleaning

    30-weight, non-detergent, compressor oil. To do so, remove the Screw (36A) located at the base of the Air Compressor. Drain the old oil into a proper container. Then, refill the Air Compressor with new oil. (See Figure B.) To replace the V-Belt: Unscrew and remove the six Screws (21) that hold the front Belt Guard (13) section to the rear Belt Guard section.

  • Page 14: Please Read The Following Carefully

    Belt Guard section. Loosen the four Screws (31) at the base of the Engine. Slide the Engine toward the Air Compressor to loosen tension on the V-Belt (44). Remove the old V-Belt from the Flywheel (39A) and Pulley (37). Install the new V-Belt (A47/13 x 11.94) on the Flywheel and Pulley.

  • Page 15: Troubleshooting - Compressor

    TROUBLESHOOTING - COMPRESSOR Replace Valve Cannot reach maximum air pressure point SKU 93874 For technical questions, please call 1-800-444-3353. Page 15...

  • Page 16: Parts List

    Connection Rod Piston Pin Piston Piston Ring 17AA Piston Ring Piston Ring Seeger Cylinder Screw SKU 93874 For technical questions, please call 1-800-444-3353. PARTS LIST Qty. Part # Hose Clamp Screw (M8 x 45) Joint Pressure Release Valve Washer (#8)

  • Page 17: Assembly Diagram

    ASSEMBLY DIAGRAM NOTE: Some parts are listed and shown for illustration purposes only, and are not available individually as replacement parts. SKU 93874 For technical questions, please call 1-800-444-3353. Page 17...
  • Page 18 ASSEMBLY DIAGRAM - CONT. 100A 17AA purposes only, and are not available individually as replacement parts. SKU 93874 For technical questions, please call 1-800-444-3353. 17AA NOTE: Some parts are listed and shown for illustration Page 18...

  • Page 19: Limited 2 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 two years from date of purchase (90 days if used by a professional contractoror if used as rental equipment).

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