Mercury - Starter Motor Assembly Multi-Series Outboards Steel & Marine-Grade Components 892339T01. Overview. Every boater knows that feeling when you twist the key and the engine answers instantly. It is a small moment, but it sets the tone for the entire day on the water. A trustworthy starter motor does more than turn the engine over-it gives you that quiet confidence that your trip is beginning exactly the way it should. This Mercury Marine part brings that familiar, steady reliability, the k