Harbor Freight Tools 67708 Checking the Oil, Cold Weather Operation, Oil Sight Glass

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.

Crankcase Cover (31)

	Oil Sight Glass (33)
OIL LEVEL
overfill
full
low
Figure 5	Tank (70)

2.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

Page 10 For technical questions, please call 1-800-444-3353. SKU 67708