Mercury Mariner Outboards: Fuel Pump Rebuild & Repair Help
Mercury Mariner Forum Topic: Fuel Pumps
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Mercury Mariner Forum Topics
Fuel Pump Rebuild Kit for Mercury Mariner Outboard
A fuel pump rebuild kit is needed every so often with outboard motors. The inner rubber diaphragm can develop cracks or pin holes that effect proper fuel flow, and inner check valves and springs can break causing complete pump failure. Older motors can have pre-ethanol components that should be upgraded to new ethanol resistant materials.