Mercury - Inlet Needle and Seat Assembly Carburetor Series Precision Brass Construction F10265. Overview.. There's a certain comfort that comes from a motor that lights off clean, settles into a steady idle, and responds the moment you nudge the throttle. When you're out on the water, those small moments of reliability mean everything especially when you're miles from the dock with nothing but the hum of your outboard behind you. The Quicksilver F10265 Inlet Needle and Seat Assembly plays a surp