Harbor Freight Tools 21 gal. 2.5 HP 125 PSI Cast Iron Vertical Air Compressor Quick Start Guide

If Compressor does NOT start:
1
a. Turn Switch OFF.
b. Press Reset Button.
c. Turn Switch ON.
100
100
125
200
50
225
25
250
PSI
Reset
Plug cord into
120 VAC outlet
and turn
Switch ON.
2
100
100
125
75
175
100
PSI
125
200
225
25
PSI
250
200
50
250
225
25
PSI
4
3
(Oil sold separately)
OVERFILL
FULL
LOW
Coupler
150
175
75
250
Connect air line
to Coupler.
OIL
Fill compressor pump
to proper level with
Air Compressor Oil.
175
225
25
225
250
150
200
50
200
PSI
125
75
150
50
25
15a
150
175
50
Turn Switch OFF
to release any
remaining pressure.
5
32 oz
125
75
150
175
75
Drain
Valve
Close Drain Valve
at bottom of tank.
3/8″ Air
Plug
Hose
Plug
Air Tool
Air Compressor
Air Filter
Quick Coupler
Thread seal tape is recommended for all threaded connections.
Recommended Accessories
• 3/8″ Air Hose
• 1/4″ Accessory Kit
• Inline Air Filter
Use of an extension cord is not recommended.