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

SKU 67708 

        

General 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.

compressor 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 

injury.

2.  Locate the Compressor on a flat 

level surface to ensure proper pump 

lubrication and to prevent damage to the 

unit.  Keep at least 12” of space around 

the unit to allow air circulation.

3.  Route the power cord from the 

compressor to the grounded wall outlet, 

along a safe path without creating a 

tripping hazard or exposing the power 

cord to possible damage.

General operation

1.  Close the Drain Valve (66).
2.  Make sure all nuts and bolts are tight.
3.  Check for oil leaks and check the oil 

level (See Checking the Oil).

4.  Close the in-line Shutoff Valve between 

the compressor and the air hose.

5.  Make sure the air tool’s throttle or switch 

in the off position.

6.  Connect the air tool to the air hose.
7.  Plug the Air Compressor Power Cord 

into a grounded 120 V electrical outlet.

8.  Open the in-line Shutoff Valve.

9.  Turn the Power Switch ON.
10.  Allow the Air Compressor to build up 

pressure until it cycles off.

note:

 At the beginning of the day’s first use of 

the Air Compressor, check for air leaks 

by applying soapy water to connections 

while the Air Compressor is pumping 

and after pressure cut-out.  Look for air 

bubbles.  If air bubbles are present at 

connections, tighten connections.  Do 

not use the air compressor unless all 

connections are air tight, the extra air 

leaking out will cause the compressor to 

operate too often, increasing wear on the 

compressor.

note:

 As long as the Power Switch is ON, 

the operation of the Air Compressor 

is automatic, controlled by an internal 

pressure switch.  The Compressor 

will turn on automatically when the air 

pressure drops to 95 PSI as indicated 

on the Tank Pressure Gauge (53), and 

will turn off automatically when the air 

pressure reaches 125 PSI as indicated.  

ImPortant:

 The internal pressure 

switch is not user adjustable, 

do not 

make changes to the air pressure 

settings of the internal pressure 

switch.  

Any change to the automatic 

pressure levels may cause excess 

pressure to accumulate, causing a 

hazardous situation.

11.  Adjust the Air Compressor’s Pressure 

Regulator (74) so that the air output is 

enough to properly power the tool, but 

the output will not exceed the tool’s 

maximum air pressure at any time.  

Turn the knob clockwise to increase 

the pressure and counter-clockwise to 

decrease pressure.  Adjust the pressure 

gradually, while checking the air output 

gauge to set the pressure.

12.  Use the air tool as needed.

Summary of Contents for 67708

Page 1: ...l 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 manu...

Page 2: ...ing 8 Instructions for putting into use 8 Functions 8 Assembly Mounting 9 Checking the Oil 10 General Operating Instructions 11 Compressor Area Set Up 11 General Operation 11 Emergency Depressurizatio...

Page 3: ...ided could result in minor or moderate injury NOTICE is used to address practices not related to personal injury CAUTION without the safety alert symbol is used to address practices not related to per...

Page 4: ...to operate it A compressor is dangerous in the hands of untrained users d Maintain the compressor Keep the compressor clean for better and safer performance Follow instructions for lubricating and cha...

Page 5: ...0 PSI or 150 of the maximum system pressure whichever is greater 15 USE OF AN EXTENSION CORD IS NOT RECOMMENDED If you choose to use an extension cord use the following guidelines RECOMMENDED MINIMUM...

Page 6: ...the plug will not fit the outlet have a proper outlet installed by a qualified electrician 110 120 V Grounded Compressors Compressors with Three Prong Plugs 1 In the event of a malfunction or breakdo...

Page 7: ...plug illustrated above in 125 V 3 Prong Plug and Outlet 8 The outlet must be properly installed and grounded in accordance with all codes and ordinances 9 Do not use an adapter to connect this compres...

Page 8: ...ant Safety Information section at the beginning of this manual including all text under subheadings therein before set up or use of this product To prevent serious injury from accidental operation Tur...

Page 9: ...minutes Air will expel freely through the Coupler e Turn the Power Switch OFF f Unplug the Power Cord and remove the male coupler 5 Connect a regulator valve an inline shut off valve and a 1 4 NPT air...

Page 10: ...hown above on the sight glass 3 To add oil a Remove the Oil Plug b Using a funnel to avoid spills pour enough oil into the Pump Crankcase to reach the full level in the Oil Sight Glass c Replace the O...

Page 11: ...ild up pressure until it cycles off Note At the beginning of the day s first use of the Air Compressor check for air leaks by applying soapy water to connections while the Air Compressor is pumping an...

Page 12: ...is necessary to quickly depressurize the Compressor turn the Power Switch OFF Then pull on the ring on the Safety Valve 73 to quickly release stored air pressure Automatic Shut off System 1 Reset But...

Page 13: ...rfaces of the compressor with a clean cloth 3 WARNING If the supply cord of this compressor is damaged it must be replaced only by a qualified service technician Maintenance Schedule Following are gen...

Page 14: ...the FULL level on the Oil Sight Glass f Replace and tighten the Oil Breather Plug g Discard the old oil according to local state and federal regulations Draining Moisture from the Tank The Drain Valve...

Page 15: ...Check that circuit matches compressor requirements 2 Drain oil and refill to proper level with recommended oil 3 Move unit to a warmer location Check that recommended oil is in crankcase 4 Listen for...

Page 16: ...needed Do not overtighten Excessive noise 1 Crankcase overfilled with oil or oil is incorrect thickness or type 2 Crankcase oil level too low 3 Loose or damaged belt guard 4 Loose fittings 5 Unit not...

Page 17: ...parts of the product In fact the manufacturer and or distributor expressly states that all repairs and parts replacements should be undertaken by certified and licensed technicians and not by the buy...

Page 18: ...Glass 1 34 O Ring 1 35 Drain Plug M5 x 10 1 36 O Ring 1 37 Oil Breather Plug 1 38 Crankcase Cover Gasket 1 39 Pump Crankcase 1 40 Washer M5 10 41 Screw M5 x 16 10 Part Description Qty 42 Manual Overl...

Page 19: ...Page 19 For technical questions please call 1 800 444 3353 SKU 67708 ASSEMBLY DIAGRAM...

Page 20: ...ecial or consequential damages arising from the use of our product Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation of exclusion may...

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