Mercury - Fuel Pump Assembly Fuel System Components Marine-Grade Construction 8M6010286. Overview. There's a certain comfort that comes from running a small outboard that you know inside and out. Those 9.9-15 horsepower Evinrude and Johnson engines have powered countless fishing mornings, family lake days, and quiet evening cruises over the years. But even the most trusted two-stroke needs steady fuel delivery to stay reliable, and when the pump begins to weaken, you feel it immediately. The Qui