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INSTALLATION SCHEMATIC OF A HILBORN FUEL INJECTOR

#6 line #6 line

#6 line

VENT

#4 PRIMARY BY-PASS VALVE

#6 line

Solid line is installation with a Secondary By-Pass Valve Dotted line is installation with an optional Hi Speed By-Pass (Cut Off) Valve

FUEL TANK

OUT OUT

#6 line

#8, 10, or 12 line

FUEL FILTER

IN

FUEL PUMP

OUT

SHUT OFF VALVE

#6 line

IN OUT

THROTTLE ARM

METERING VALVE W/ROTOR

"S" SECONDARY BY-PASS VALVE

#6 line

"C" HI-SPEED BY-PASS (CUT-OFF) VALVE

#6 line #3 lines

#3 lines

NOZZLES INSTRUCTIONS:

1. The main line from the pump to the metering valve connects to the fitting at the top of the metering valve. 2. The Secondary By-Pass Valve connects to the brass fitting opposite the throttle arm on the side of the metering valve. There are no jets to change in this valve. 3. The Hi Speed By-Pass (Cut Off) Valve (not on all units) connects to a pump outlet and returns the fuel to the tank. Each change in the main jet size should be accompanied by a change in the spacers as follows: · For every .005 richer on the main by pass jet, add a 1/32" spacer. · For every .005 leaner on the main by pass jet, remove a 1/32" spacer.

NOZZLES SET-UP RECOMMENDATION

FUEL INJECTION ENGR. CO. INC., 22892 GLENWOOD DR., ALISO VIEJO, CA 92656 · PH (949)360-0909 · FAX (949)360-0991 · www.hilborninjection.com #101

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