Mr. Gasket 95P Electric Fuel Pumps - Manual (Page 2)

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step 4
If you choose to no longer use your mechanical fuel pump, make
sure to disconnect the fuel lines, plug the ports and bypass the
pump from the circuit. If you choose to remove your mechanical
fuel pump, make sure to seal the opening with a metal cover and
gasket. We recommend Mr. Gasket Part No. 1515, 1516, 1517,
9125G or 9126G depending on your application.
PressUre reGULatOr INstaLLatION
step 1
Mount the fuel pressure regulator as close as possible to the
carburetor.
Note: Do not mount the regulator on or near exhaust
manifolds. A bracket is provided for convenient mounting.
step 2
Attach the fuel line from the outlet side of the fuel pump to either
side of the fuel pressure regulator. See Figure 1B above. All fuel
line connections should be leak proof. The fuel return line should
be as large, or larger, than the fuel line between the fuel pump and
the regulator. See Figure 2 for size recommendations.
FUeL PressUre aDJUstMeNt
Depending on requirements, the regulator may need
adjustment. To increase regulator pressure, turn adjustment
screw clockwise; and turning the adjustment screw counter-
clockwise will decrease pressure.
NOTE: Turning the adjustment
screw all the way will cause carburetor flooding. Make sure to use a
fuel pressure gauge when adjusting fuel pressure.
WIrING PrOCeDUre
Wiring the pump to an oil pressure switch will provide
power only when the ignition switch is on and the engine is
running. This will prevent the pump from running if your engine
stalls. Use 14 gauge wire or larger. See Figure 3 or 4. We rec-
ommend Mr. Gasket Part No. 7872.
NOTE: Disconnect the battery
ground cable before wiring the pump.
FIGUre 1B
Mr. Gasket eLeCtrIC FUeL PUMP #105P (INCLUDes reGULatOr)
Mr. Gasket eLeCtrIC FUeL PUMP #130P (DOes NOt INCLUDe reGULatOr)
FIGUre 2
FUeL retUrN LINe sIZe reCOMMeNDatIONs
Fuel Return Line
Length/Distance
GAL. PER HOUR (FREE FLOW)
1 to 99 100 to 129 130 to 199
16’-20’ 1/2” 1/2” 5/8”
11’-15’ 3/8” 1/2” 5/8”
6’-10’ 3/8” 1/2” 1/2”
1’-5’ 3/8” 1/2” 1/2”
3/8” = 6AN 1/2” = 8AN 5/8” = 10AN