Lower Unit Drain Plug Kit – Fits Mercury/MerCruiser Outboard Engines & Sterndrives family-yamaha-40mlhu A: The most common failure

A: The most common failure signs are a weak or non-existent water stream from the engine's tell-tale outlet

Check for Leaks: Prime the fuel system using the primer bulb and carefully inspect for any leaks around the new connector before starting the engine

the housing gasket

or visible damage like cracks and fraying on the timing belt itself

Install Water Pump Kit: Install all components from the water pump repair kit (435929/5001595) including the new impeller

Lower Unit Drain Plug Kit – Fits Mercury/MerCruiser Outboard Engines & Sterndrives family-yamaha-40mlhu A: The most common failureLower Unit Drain Plug Kit Fits Mercury MerCruiser Outboard Engines & Sterndrives (Replaces 8M0058389, 79953Q04) This lower unit drain fill plug kit is designed for a wide range of Mercury and Mariner outboard engines, as well as MerCruiser sterndrives. It fits most models equipped with 3 8 16 drain and fill screw holes, excluding the Verado series. Compatible sterndrive models include MC 1, Alpha One (Gen I & II), TR, TRS, I, R, and MR. This kit