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How to Winterize a Mercury Outboard: 7 Steps Before Storage
If your outboard is going to sit for several months, parking the boat and waiting for spring isn't the best plan. Fuel can deteriorate, batteries discharge, corrosion continues, and water hiding inside a gearcase becomes especially concerning where freezing temperatures are possible.
Mercury's exact winterization procedure varies by engine, so your owner's manual should always be the final reference for your model. But whether you're storing a Mercury FourStroke, Verado, Pro XS, or an older Merc
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Sep 22nd 2026