How To Change a Mercury Outboard Fuel Filter

Replacing the Quicksilver fuel filter on many Mercury outboard motors is an easy job thanks to the quick-disconnect fittings. No tools are required to change this filter, which is featured on late-model four-stroke Mercury outboards from 75 horsepower through Verado models.

The Mercury maintenance schedule calls for changing this low-pressure fuel filter every 100 hours, but it’s a good idea to replace it at the end of the season if you winterize your boat or put it up for long-term storage. The yellow handle on the filter makes it easy to find and retrieve from the lower pan, and it’s good practice to inspect the filter on occasion. If it looks dark it could be filling with contaminants, which is exactly what’s it’s designed to do – keep that crud out of your outboard. Under certain conditions it is possible for a fuel filter to suddenly become clogged, so consider keeping an extra filter on board should it need immediate replacement.

In this how-to video, Scott Glorvigen of Wired2Fish and the Lund Boats Pro Staff demonstrates how to change the fuel filter on a Mercury 150hp FourStroke outboard. For specific instructions on locating and changing the filter on other Mercury outboard models, consult your owners manual.