Operation – Northern Industrial Tools 2 HP / 4 GALLON AIR COMPRESSOR User Manual
3. Slowly pour the oil into the Oil Fill hole, until the
oil level rises to the center of the red dot on the
Oil Sight Glass.
Note: This compressor uses only SAE 5W-30
4. Install the Oil Breather Cap into the Oil Fill hole.
5. Firmly hand tighten the Oil Breather Cap by
(See Figure 2)
Figure 2. Installing the Oil & Oil Breather Cap
Installing the Air Chuck
Note: The use of a sealant tape is recommended
on the threads of the Air Chuck to prevent air
1. Thread the Air Chuck into the Air Regulator by
turning the Air Chuck clockwise.
2. Securely tighten the Air Chuck in place with a
wrench. (See Figure 3)
Note: DO NOT over tighten Air Chuck.
Installing the Air Filter
The metal Air Filter is installed into the threaded
port of the cylinder head.
1. Thread the Air Filter into the Cylinder Head by
turning the Air Filter clockwise.
2. Securely tighten the Air Filter in place with a
(See Figure 4)
Note: DO NOT over tighten Air Filter.
BEFORE OPERATING YOUR NEW AIR
COMPRESSOR please check the following points
1 Check that all nuts and bolts are secure.
2. Make sure oil has been properly added to
compressor. (See Installing Oil and Oil Breather
Initial Start-Up Procedure
1. Open the Air Tank Drain Valve to permit air to
escape, preventing air pressure buildup in the
2. Run the compressor for a minimum of 20
minutes in this “no-load” position to lubricate the
piston and bearings.
3. Close Air Tank Drain Valve. Your compressor is
ready for use.
Depending on the CFM draw of the tools being
operated, your new Air Compressor can be used for
operating paint sprayers, air tools, grease guns,
airbrushes, caulking guns, abrasive blasters, tire &
plastic toy inflation, spraying weed killer and
insecticides, etc. Proper adjustment of the Air
Pressure Regulator is necessary for all of these
operations. Refer to the air pressure specifications
provided with the tool you are using.
Figure 3. Installing the Air Chuck
Figure 4. Installing the Air Filter