Mallory Ignition 4200, 4201 User Manual

INSTALLATION INSTRUCTIONS

FUEL PRESSURE REGULATOR

SERIES 4200/4201

Mallory's 5-Port Return Style Fuel Pressure Regulator is
recommended for high volume applications (250-500
GPH). This regulator is available in two models:

• Series 4200, designed for gasoline applications

• Series 4201, designed for alcohol applications

For best efficiency, the regulator should be mounted as
close as possible to the carburetor.

Both regulators are adjustable from 5 to 18 PSI at a flow
rate of 500 GPH. To adjust pressure, loosen the jam nut
and turn the adjustment screw. Clockwise rotation
increases pressure.

NOTE: Adjusting fuel pressure higher than 7 PSI on
carbureted engines may cause carburetor flooding and
possible fire.

OUTLET TO CARB.

(#10 AN) CAN BE USED AS OUTLET TO CARB.

(#10 AN) INLET FROM PUMP

MOUNTING SCREWS (2)

PRESSURE ADJUSTMENT SCREW

#8 AN (5-PLC'S) CAN BE USED AS

JAM NUT

ATMOSPHERIC COMPENSATION PORT

FORM 1043 (REV. B) 06/08