Mercury - Quicksilver Engine Starter Diesel Starting Series Durable Marine Construction 8M6007438. Overview. There's a particular kind of reassurance that comes from starting a diesel engine that fires immediately and settles into its steady, confident rumble. Anyone who runs a Yanmar knows that sound well - it's the heartbeat of the boat, the moment where a long day's run or a quiet morning departure begins. When your starter is reliable, that moment becomes something you trust instinctively. T