If your Mercury, Mariner, or Force outboard motor is experiencing fuel delivery issues like sputtering, hard starting, or stalling, it might be time to service the manual fuel pump.
 
A cost-effective and reliable solution is to use a Fuel Pump Rebuild Kit, which allows you to restore the fuel pump that runs off crankcase pressure—without replacing the entire assembly.
 
This fuel pump repair kit is compatible with a wide range of 2-stroke outboard engines from 30 HP to 300 HP, covering model years 1976 through 2005. This includes the 2, 3, and 4 cylinders as well as the 2.0, 2.4, 2.5, and 3.0 Liter V6s.
 
Whether you have a lightweight 30 HP Force, a mid-range 90 HP Mariner, or a high-performance 250 HP Mercury outboard, this kit is engineered to bring your fuel system back to optimal function.
 
Designed to meet or exceed OEM standards, this rebuild kit replaces numerous part numbers, including 42990A1, 42990A2, 42990A3, 42990A4, 42990A5, 42990A6, 42990A7, 42990A8, 42990A9, 42990A10, and 42990A11, as well as 21-857005A1.
 
It’s also a direct match for popular aftermarket part numbers such as 18-7817, S18-7817, and 40290. Commonly referred to as the 42990A10 Fuel Pump Repair Kit, it’s suitable for use across various Mercury and Mariner 2-stroke models like the 40 HP, 50 HP, 75 HP, 115 HP, 150 HP, 200 HP, and 225 HP engines. It also supports Force outboards ranging from 30 HP to 300 HP that utilize the diaphragm-style manual fuel pump design.
 
Each kit includes all the components necessary to rebuild your existing pump—diaphragms, gaskets, check valves, and seals—providing everything needed for a thorough, reliable repair.
 
Rebuilding your fuel pump instead of replacing it not only saves money, but also extends the life of your engine and maintains fuel efficiency.
 
Whether you're a seasoned marine technician or a hands-on boater performing your own maintenance, this Fuel Pump Rebuild Kit for Mercury, Mariner, and Force outboards is the trusted choice to restore reliable fuel delivery and ensure dependable performance on the water.
 
Includes one (1) Fuel Pump Rebuild Kit. Select 1) the later Square Style 42990A10 fuel pump repair kit, or 2) earlier Oblong Style 9036A 1 fuel pump repair kit.
 
Contact Mike Hill at +1-714-697-1716 or email mike@buckshotracing77.com for technical support.