Winterizing a Mercury 4 stroke Outboard

[Bduck]

You can't go wrong with all that's mentioned previously. With what is mentioned makes me wonder what do marine shops do for $300, maybe charge you for additional parking space[i]. That's just my thoughts. You can also add battery maintenance to protect it while not in use with an onboard smart charger or battery tender. If boat is stored outside most will remove batteries to store inside. I store my boat in the garage 24/7 which protects my boat year-round. Topping off the tank with fresh fuel (I recommend nonethanol gas) is another preventative measure with a fuel stabilizer for long term. A must see, boats have open fuel tank ventilation unlike your vehicles, YouTube has videos of testing ethanol fuel.  [/i]