Get your engine, fuel, hull and gear ready for summer on the water If your boat has spent winter in the shed or on the trailer, a bit of prep now is much cheaper than a breakdown on the first long weekend. Here are four jobs worth doing before you launch the boat or fire up the jet ski. 1. Check the engine and fuel Marine engines and fuel systems are prone to corrosion and deposit build-up, especially after months of sitting. Before the first launch: Check the fuel. If it has