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Page 10

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

SKU 67708 

        

Consult your air tool’s manual for needed 

accessories.

checking the oil

1.  Check the oil level before operation.  

Fill the Pump Crankcase with premium 

quality SAE 30-weight, non-detergent, air 

compressor oil (sold separately).

ImPortant:

 

running the air compressor 

with the incorrect amount of oil will 

cause damage to the equipment 

and void the warranty. to prevent 

damage, do not use with overfilled 

or low oil. Slowly fill to full line, wait 

2 minutes and fill back up to full line. 

compressor has small passages that 

will fill slowly. 

2. 

Oil Sight Glass (33)

Crankcase Cover (31)

Tank (70)

oVerFIll

loW

Full

OIL LEVEL

Figure 5

The oil level should be at the center of 

the “full” level on the oil level sight glass, 

as shown in Figure 2.  Add oil as needed 

to maintain this level.  Do not let the 

oil level go below the center dot (LOW 

as shown above) and do not overfill 

the oil so that it is above the center dot 

(OVERFILL as shown 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 Oil Plug.

cold Weather operation

Premium quality SAE 30-weight, non-

detergent, air compressor oil (sold 

separately) is recommended for use 

with this compressor.  Start compressor 

in heated area if outdoor temperatures 

drop below 32° F.  If this is not practical, 

drain out the old pump oil and use SAE 

10W Non-detergent Air Compressor Oil 

in the pump crankcase instead whenever 

the compressor’s temperature will fall 

below 40°.  Do not use multi-viscosity 

oil (such as 10W-30), they leave carbon 

deposits on pump components and lead 

to accelerated failure.  Heavy operation 

may require heavier viscosity oil.

4.  If uncertain which oil to use for this 

compressor, please call Harbor Freight 

Tools customer service at 1-800-444-

3353 for assistance.

5. 

change the compressor oil after the 

first hour of use to remove any debris.

WarnInG!

 To prevent serious injury from 

burns: Do not add or change the oil while 

the compressor is in operation.  Allow the 

compressor to cool before replacing oil.

reV 10e

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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