FUEL FILTER 35-826964T

Function and technical context

The petrol filter acts as a protective barrier in the fuel supply circuit, intercepting solid particles, rust residues and sediments from the tank before they reach the most sensitive parts of the engine. In two-stroke outboard engines with carburetors, fuel contamination directly translates into clogging of the tiny carburetor ducts and deterioration of needles and diffusers; In units with electronic injection, the injectors can become irreversibly clogged by the slightest presence of impurities. Maintaining effective filtration ensures that the air-fuel mixture is formed in the correct proportions, which has a direct impact on throttle response, consumption and the overall reliability of the power unit.

When to replace this part?

A saturated fuel filter usually manifests itself through symptoms such as difficult starting when cold, slow or jerky acceleration, drop in maximum revolutions and erratic or irregular engine operation, especially when sailing with a full load. For outboard motors in regular use, it is recommended to replace the filter every 100-200 hours of operation or, at least, at the beginning of each navigation season, taking into account that fuel stored during the winter can accumulate water and sediments that collapse the filter element more quickly. Changing the filter preventively is the most economical maintenance intervention to avoid a breakdown in the carburetor or injectors that requires a much higher cost repair.

Compatible Mercury Mariner Engines