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SKU 65903 

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

 

Page 5

SPECiFiC SAFETY RuLES

CAuTiON!  Prior to its 

1. 

first

 use, and thereafter prior to each 

subsequent

 use, 

make sure to fill the Air Compressor with a premium quality, 30 weight, non-

detergent oil to the specified level.  

Running the Air Compressor with no oil or 

with low oil will cause damage to the equipment and void its warranty.  Refer to the 

“Operating Instructions”

 section for details on filling the Air Compressor with oil.

When filling the Air Compressor with oil, make sure to 

2. 

unscrew

 (do not pull) 

the Oil Fill Cap to remove.
use eye and ear protection.  

3. 

Always wear ANSI-approved safety impact eye 

goggles, and ear plugs when using the Air Compressor.

Make sure all tools and equipment used with the Air Compressor are rated to 

4. 

the appropriate air pressure capacity of the Air Compressor.  

Do not use any 

tool or equipment that does not operate from 0-115 PSI.  If necessary, check the 

owner’s manual of the tool or equipment for its air pressure rating.

Always disconnect the Air Compressor from its electrical outlet, release any 

5. 

remaining air pressure from the unit, and disconnect all pneumatic tools and 

equipment from the unit, before performing any services or maintenance.
Avoid injury.  Never direct the air jet at people or animals.

6. 

inspect safety valve daily

7. 

. If the safety valve is not working properly, tank pres-

sure can build up to dangerous levels. The tank could explode. For this reason, 

pull the ring on the safety valve before each use and verify that it operates freely. 

Replace safety valve if it does not operate freely.

 

Never remove or alter the factory sealed Safety Release Valve.
do not attempt to readjust the automatic start and shutoff valves.  

8. 

Any 

change to the automatic ON/OFF pressure levels will cause additional stress on 

the motor, which may result in shortened motor life.

drain the Air Compressor’s air tank every day.  

9. 

Do not allow moisture to build 

up inside the Air Tank.

do not unscrew the tank drain valve so that 

10. 

more than

 four threads are 

showing.
Avoid risk of tank explosion

11. 

.

Avoid weakening of tank by draining condensation after each use.

a. 

Never modify tank by drilling holes, welding to it, or modifying it’s parts.

b. 

The tank is designed, and factory set, to operate within a specific pressure range. 

c. 

For that reason, never make adjustments to, or substitute parts, to the compres-

sor.

Avoid bodily injury from moving parts

12. 

. The compressor cycles on automatically, 

without notice. For this reason, always keep hands and arms away from compres-

Summary of Contents for 65903

Page 1: ...Copyright 2008 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 Harbo...

Page 2: ...4 1 2 Diameter UNPACKING When unpacking check to make sure all the parts shown on the Parts List at the end of the manual are included If any parts are missing or broken please call Harbor Freight Too...

Page 3: ...to pull the Plug from an outlet Keep the Power Cord away from heat oil sharp edges or moving parts Replace damaged Power Cords immediately Damaged Power Cords increase the risk of electric shock An e...

Page 4: ...mpressors out of reach of children and other untrained persons 4 Compressors are dangerous in the hands of untrained users Maintain compressors with care Keep all components of this product clean 5 an...

Page 5: ...quipment from the unit before performing any services or maintenance Avoid injury Never direct the air jet at people or animals 6 Inspect safety valve daily 7 If the safety valve is not working proper...

Page 6: ...s before using this product Electromagnetic fields in close proximity to a heart pacemaker could cause interference to or failure of the pacemaker 20 WARNING The brass components of this product cont...

Page 7: ...ng Plug not included For safety purposes only a qualified certified electrician should attach a Plug to the Power Cord Never modify the Plug in any way To com ply with the National Electric Code and t...

Page 8: ...See Figure D Once the Oil Fill Cap 28 is removed fill the Air Compressor with a premium qual 3 ity 30 weight non detergent oil until the level of the oil rises to the midway point in the Oil Level In...

Page 9: ...g holes in its legs with the four pre drilled 1 2 holes in the concrete or wood Then use four minimum 3 long 1 2 diameter concrete an chor bolts or lag bolts not included to secure the Air Compressor...

Page 10: ...e Air Outlet Valve 4 forward to its open position in order to supply air to the pneumatic tool See Figure E If necessary turn the Pressure Adjustment Knob 6 7 clockwise to increase air pressure to the...

Page 11: ...Compressor press down on its Power Switch Lever 9 1 to turn off the unit See Figure E Disconnect the Power Cord Plug 31 from its electrical outlet 2 Turn on the pneumatic tool to expend all remaining...

Page 12: ...FILL HOLE PCV FILTER 41 OIL FILL CAP 28 3 Before each use Make sure to fill the Air Compressor with a premium quality 30 weight non detergent oil Running the Air Compressor with no oil or low oil will...

Page 13: ...er Cap Air Filter and Air Filter Bowl 39 Clean Air Filter with compressed air or if necessary re place old Air Filter with a new Air Filter Clean Air Filter Cap and Air Filter Bowl with a mild solvent...

Page 14: ...Belt 27 on Large Belt Wheel and Motor Pulley 14 9 See Figure H MOTOR PULLEY 14 LARGE BELT WHEEL 3 4 V BELT 27 FIGURE J 10 Slide the Motor 14 back toward its original position to tighten the tension o...

Page 15: ...normal wear and tear or to lack of maintenance We shall in no event be liable for death injuries to persons or property or for incidental contingent special or consequential damages arising from the u...

Page 16: ...month and year of purchase instead Note Some parts are listed and shown for illustration purposes only and are not avail able individually as replacement parts Part Description Qty 1 Flat Washer 8 4 2...

Page 17: ...SKU 65903 For technical questions please call 1 800 444 3353 Page 17 ASSEMBLY DIAGRAM REV 10g...

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