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Mallory Fuel Series 110 and 140

Electric Fuel Pump

PN 29259, PN 29256, PN 29209

Parts Included in this kit:

1 - Electric Fuel Pump 

1 - Bag, Fuel Pump Hardware

1 - Fuse Holder 

4 - Bolt, Steel 5/16" 

1 - Ring Terminal

4 - Washer, Steel 5/16" Flat

Read all instructions carefully before beginning installation.

GENERAL INFORMATION

The Mallory Fuel 110 Series Electric Fuel Pump is a high volume fuel pump designed for high performance street 

and marine applications. The operating fuel pressure is factory set at 7 PSI. Normally, a fuel pressure regulator is 

not necessary. We recommend a 5/16" or larger fuel line with this fuel system.
The Mallory Fuel 140 Electric Fuel Pump is a high volume high pressure fuel pump designed for high performance 

street, racing and marine applications. The operating fuel pressure is factory set at 12 PSI. This pump must be 

used with a fuel pressure regulator to prevent carburetor flooding. We recommend a 3/8" or larger fuel line with 

this fuel system.
The Mallory Fuel Series 140 Part Nos. 4142 and 4142A come with a 3 Port Return Style Regulator. These fuel 

systems must have a fuel return line installed between the fuel pressure regulator's fuel return port and the fuel 

tank. We recommend a 3/8" or larger fuel return line.
When installing the fuel pump fittings, use a thread sealant compound (you can find this at a hardware store) on 

the fitting threads. Do not use Teflon tape. Teflon tape can get into the Gerotor and lock the pump. Also, do not 

overtighten the fittings. This could damage the fuel chamber.
Be sure to install a suitable fuel filter (minimum 40 micron filtration) between the fuel tank and the fuel pump. The 

Mallory COMP FILTER® Series Part No. 3140 is recommended. This prevents debris from becoming wedged in 
the fuel pump's Gerotor and locking it.

 

SPECIFICATIONS

 

Operating pressure:  Mallory Fuel 110 Series factory set at 

 

Inlet/outlet thread sizes:  3/8" NPT 

 

Oil pressure switch rating:  7.5 AMP

 

Over current protection:  7.5 AMP fuse

 

Gasoline fuel applications:  Part Nos. 4110, 4110M, 4140, 4140M, 4141, 4142 and 4150

 

Alcohol/Methanol fuel applications:  Part Nos. 4110A, 4141A, 4142A and 4150A 

The Mallory Fuel 110 Series Part No. 4110M and the Mallory Fuel 140 Series Part No. 4140M have been tested 

to UL 1130 AND SAE J1171 specifications and meet U.S. Coast Guard, American Boat and Yacht Council, 
Inc. and the Nation Fire Protection Association for Motor Craft NFPA No. 302 requirements for marine usage.

SERVICE PARTS:

  Part No. 3146  A Brush Kit
  Part No. 3165  Seal/Repair Kit, Gasoline (may be used to convert alcohol/metha- nol fuel pumps to gasoline)
  Part No. 3166  Seal/Repair Kit, Alcohol/Methanol (may be used to convert gaso- line fuel pumps to alcohol/

methanol)

 

NOTE:

 DO NOT RUN THIS PUMP WITHOUT FUEL (EXCEPT FOR BRIEF PERIODS WHILE PRIMING).

4 - Nut, 5/16" Flat

1 - Fuse, 7.5 AMP

A fuel pressure regulator is included with COMP 

PUMP® 140 Series Electric Fuel Pump Kit

Part Nos. 4140, 4140M, 4141, 4141A, 4142 and 4142A.

This product is covered under one or more of the following U.S. 

Patents:5,007,806; 4,998,557; 5,111,793; 5,123,436; 5,186,147

Summary of Contents for Mallory Fuel 110 Series

Page 1: ...o not use Teflon tape Teflon tape can get into the Gerotor and lock the pump Also do not overtighten the fittings This could damage the fuel chamber Be sure to install a suitable fuel filter minimum 40 micron filtration between the fuel tank and the fuel pump The Mallory COMP FILTER Series Part No 3140 is recommended This prevents debris from becoming wedged in the fuel pump s Gerotor and locking ...

Page 2: ...o the frame or battery Refer to Figure 4 when connecting the pump to the ignition switch ON terminal MAINTENANCE PUMP DISASSEMBLY If your pump fails to produce adequate pressure it may require cleaning Follow the steps below to disassemble and clean your Mallory Electric Fuel Pump Refer to Figure 5 while performing the following steps Step 1 Remove the pump from the vehicle and clean pump exterior...

Page 3: ... E R F O R M A N C E C O M 9 1 5 8 5 5 7 1 2 3 F A X 9 1 5 8 5 7 3 3 4 4 Step 6 Clean the Gerotor and install it in the pump housing Inspect the O ring and gasket Replace them if necessary Place the gasket and port plate on the fuel chamber Install ...

Page 4: ... 5 7 1 2 3 F A X 9 1 5 8 5 7 3 3 4 4 FUSE 15 AMP VEHICLE BATTERY FUEL PUMP FIGURE 3 87 NO 87 A NC 85 NOT USED 86 30 C IGNITION SWITCH GROUND RED RED BLACK BLACK 3 8 NPT OUTLET 3 8 NPT INLET BOTTOM BYPASS ADJUSTMENT BYPASS PLUG AND JAM NUT GROUND TO CHASSIS OR NEGATIVE SIDE OF BATTERY ...

Page 5: ...INSTALLATION INSTRUCTIONS 5 M S D W W W M S D P E R F O R M A N C E C O M 9 1 5 8 5 5 7 1 2 3 F A X 9 1 5 8 5 7 3 3 4 4 FIGURE 4 ...

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Page 8: ...covered by warranty For more information call MSD at 915 855 7123 MSD technicians are available from 7 00 a m to 5 00 p m Monday Friday mountain time M S D W W W M S D P E R F O R M A N C E C O M 9 1 5 8 5 7 5 2 0 0 F A X 9 1 5 8 5 7 3 3 4 4 2015 MSD LLC FRM 33313 Created 06 15 TECH NOTES ______________________________________________________________________________________________________________...

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