Harbor Freight Tools 90168 - Manual (Page 9)

SKU 90168 For technical questions, please call 1-800-444-3353. Page 9
factory preset level, the Safety Valve
will automatically pop open to prevent
over pressurization in the Tank (14).
To operate the Safety Valve manually,
pull the ring on the Safety Valve to
relieve air pressure in the Tank.
tank Pressure gauge (2):
3. The Tank
Pressure Gauge measures the air
pressure stored in the Tank (14), and
is not adjustable by the operator.
tool Pressure gauge (2a):
4. The Tool
Pressure Gauge measures the air
pressure being supplied to the tool
being used.
tool Pressure Regulator (6):
5. The
Tool Pressure Regulator allows you to
adjust the air pressure (0 to 120 PSI)
being supplied to the tool being used.
Turn the Tool Pressure Regulator
clockwise to increase the air pressure
to the tool, and counterclockwise to
decrease the air pressure.