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SKU 90749

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

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PRODUCT SPECIFICATIONS

SAVE THIS  MANUAL

You will need this manual for the safety warnings and precautions, assembly, operating,
inspection, maintenance and cleaning procedures, parts list and assembly diagram.
Keep your invoice with this manual.  Write the invoice number on the inside of the
front cover.  Keep this manual and invoice in a safe and dry place for future reference.

GENERAL SAFETY WARNINGS AND PRECAUTIONS

1.

KEEP WORK AREA CLEAN AND DRY.  Cluttered, damp, or wet work areas
invite injuries.

2.

KEEP CHILDREN AWAY FROM WORK AREA.  Do not allow children to handle
this product.

3.

STORE IDLE EQUIPMENT.  When not in use, tools and equipment should be
stored in a dry location to inhibit rust.  Always lock up tools and equipment, and
keep out of reach of children.

4.

DO NOT USE THIS PRODUCT IF UNDER THE INFLUENCE OF ALCOHOL OR
DRUGS.  
Read warning labels on prescriptions to determine if your judgement or
reflexes are impaired while taking drugs.  If there is any doubt, do not attempt to
use this product.

Item Description 

Air Tank Capacity 

8 Gallons 

Air Tank Design 

Wheelbarrow Dual Tank System 

Maximum Air PSI 

115 PSI 

Cubic Feet Per Minute Rating 

10.3 CFM @ 40 PSI / 8.5 CFM @ 90 PSI 

Air Outlet Size 

3/8” NPT 

Tank Drain Valve Design 

Duel Bottom Tank Bleeders 

Automatic Compressor Shut-Off 

Yes, At 115 PSI 

Compressor Cylinder/Crankshaft Construction 

Cast Iron 

Wheel Size / Type 

10”, 4.10/8.5-4, Pneumatic 

Power Source 

6.5 HP Briggs & Stratton® 
Intek® Gasoline Engine 
Engine Displacement: 206cc 
Recoil Start 

 

Never use compressed air on yourself or another to blow off clothing, skin or hair.

REV 10/05; REV 02/06

Summary of Contents for 90749

Page 1: ...isit ourWeb site at http www harborfreight com Copyright 2003 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 For technical questions please call 1 800 444 3353 Revised Cover Page 10 04 ...

Page 2: ... dry location to inhibit rust Always lock up tools and equipment and keep out of reach of children 4 DO NOT USE THIS PRODUCT IF UNDER THE INFLUENCE OF ALCOHOL OR DRUGS Read warning labels on prescriptions to determine if your judgement or reflexes are impaired while taking drugs If there is any doubt do not attempt to use this product Item Description Air Tank Capacity 8 Gallons Air Tank Design Wh...

Page 3: ...ACCESSORIES When servicing use only identical replacement parts Only use accessories intended for use with this product Approved accessories are available from Harbor Freight Tools 12 MAINTAIN THIS PRODUCT WITH CARE Keep this product clean and dry for better and safer performance 13 MAINTENANCE For your safety service and maintenance should be performed regularly by a qualified technician 14 USETH...

Page 4: ...ally releases air if the Tank pressure exceeds the preset maximum 9 NEVER ATTEMPT TO REPAIR OR MODIFY THE AIR TANKS 31 Welding drilling or any other modification will weaken the Tanks resulting in damage from rupture or explosion Always replace worn cracked or damage Tanks 10 NEVER OPERATE THE AIR COMPRESSOR WITHOUT ITS SAFETY COVER 31 ATTACHED AND IN GOOD WORKING ORDER Air Compressor scan start a...

Page 5: ...ered metal container 18 DO NOT OPERATE THE AIR COMPRESSOR WITH KNOWN LEAKS IN THE FUEL SYSTEM 19 NEVER STORE FUEL OR OTHER FLAMMABLE MATERIALS NEAR THE AIR COMPRESSOR 20 WARNING CARBON MONOXIDE CAN CAUSE SEVERE NAUSEA FAINTING OR DEATH DO NOT OPERATE THE AIR COMPRESSOR INSIDE A CLOSED BUILDING OR A POORLY VENTILATED AREA 21 FIRE AND EXPLOSION DANGER AVOID CONTACT WITH HOT FUEL OIL AND EXHAUST FUME...

Page 6: ...M THE SYSTEM AND ALLOW THE UNIT TO COMPLETELY COOL BEFORE PERFORMING ANY INSPECTION MAINTENANCE OR CLEANING PROCEDURES ON THE UNIT 30 WARNING This product contains or produces a chemical known to the State of California to cause cancer and birth defects or other reproductive harm California Health Safety Code 25249 5 et seq TO PNEUMATIC TOOL EQUIPMENT TO AIR COMPRESSOR OUTLET LINE OILER WATER FILT...

Page 7: ...pressor Make sure Front Wheel rolls properly with no wobble Make sure the Handles are securely in place OPERATING INSTRUCTIONS 1 CAUTION ALWAYS make sure the Air Compressor is filled to the proper level with a premium quality 30 weight non detergent compressor oil prior to turning on the machine Failure to do so will result in damage to the Air Compressor and void its warranty 2 To check the level...

Page 8: ... being careful not to strip the plastic threads See Figure C OIL WINDOW B23 OIL CAP 23 FRONT VIEW SIDE VIEW FIGURE C 4 CAUTION ALWAYS make sure the crankcase of the Gasoline Engine 5 is filled to the proper level with a premium quality 30 weight non detergent engine oil prior to starting the engine Failure to do so will result in damage to the Air Compressor and void its warranty Refer to the engi...

Page 9: ...d E 11 NOTE When adjusting the air pressure being forwarded to the pneumatic tool you will need to compare the pressure readings of both the Tanks Pressure Gauge 27 and the outlet Pressure Gauge 44 The reading on the Tanks Pressure Gauge dictates the maximum air pressure at which the outlet Pressure Gauge may be set See Figure E 12 With the Air Compressor running and the air hose and pneumatic too...

Page 10: ...ition that may affect the safe operation of this tool If abnormal noise or vibration occurs immediately release all pressure from the system and have the problem corrected before further use Do not use damaged equipment The Drain Plugs are located underneath each Air Tank and should be used daily to release all trapped moisture that may cause Air Tank corrosion Slowly and carefully unscrew no more...

Page 11: ...OWING CAREFULLY THE MANUFACTURER AND OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY NEITHER THE MANUFACTURER OR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT IN FACT THE MANUFACTURER AN...

Page 12: ...Rubber Foot 5 Gasoline Engine 20 Nut 35 Pneumatic Tire 6 Washer 21 Control Wire 36 Axle 7 Nut 22 Control Valve Assembly 37 Washer 8 Belt Pulley Engine 23 Handle Grip 38 Lock Pin 9 Belt 24 Handle 39 Spring Washer 10 Bolt 25 Air Pressure Regulator 40 Flat Washer 11 Nut 26 Hose Connector output 41 Bolt 12 Support Bar 27 Pressure Gauge output 42 Safety Valve 13 Nut 28 Water Drainer 43 T Connector 14 W...

Page 13: ...ew 5 Cylinder Head 20 Spring Washer 35 Spring Washer 6 Air Connector output 21 Screw 36 Flat Washer 7 Gasket 22 End Plate 37 Belt Pulley 8 Valve Seat Plate 23 Oil Window 38 Connecting Rod 9 Gasket 24 O Ring Seal 39 Piston PI 10 Valve Plate 25 Screw 40 Retaining Ring 11 Gasket 26 O Ring Seal 41 Piston 12 Cylinder 27 Bottom Plate 42 Piston Ring 13 Gasket 28 Gasket 43 Screw 14 Bolt 29 Bearing 44 Wash...

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