Fuel Pump 67D-24410-03 PAF4-04090000

Function and Technical Context

The fuel pump is the component responsible for transferring fuel from the tank to the carburetor in small-displacement outboard engines, ensuring a constant and stable flow rate so that the air-fuel mixture is correct at each operating regime. It operates within the fuel supply system and its proper functioning is essential to maintain idle speed, progressive acceleration, and maximum engine power. When this pump fails, the engine may experience fuel cutoffs, difficult starting, or power loss, even coming to a stop during navigation. This unit is compatible with Yamaha F4, Suzuki DF4, DF5, and DF6 engines (from 2002), as well as certain Johnson and Evinrude models, establishing itself as a replacement part with broad application in low-power four-stroke outboard engines.

When to Replace This Part?

The most common symptoms of a deteriorated fuel pump in outboard engines are difficult cold starting, irregular or jerky acceleration, unstable idle, and sudden engine cutoffs during navigation, especially at full load. It is recommended to inspect the fuel pump at each seasonal maintenance, paying special attention to the condition of the internal diaphragms and check valves, which are the parts most susceptible to degradation due to ethanol present in modern gasoline. Replacing it preventively at the first sign of failure avoids being stranded and facing a more costly breakdown in the carburetor or ignition system.

Compatible Johnson/Evinrude Engines

Equivalent Manufacturer References