Here's what to do when hauling out and launching. Always follow the instruction book for your engine.
Autumn
Change the engine oil and oil filterevery 250 hours or annually
Replace the fuel filterevery 500 hours or annually
Clean the fuel pump filterevery 500 hours or annually
Change the gearbox oilevery 500 hours or annually
Check the valve clearanceevery 500 hours or annually
Winterise the raw water systemLet the engine draw in antifreeze until it comes out of the exhaust, or drain the system as described in the owner's manual.
Check anodes, belts and hoses
Fully charge the batteries and disconnect the negative terminal
Spring
Drain water from the fuel filterevery 100 hours or annually
Check the battery, cables and connectionsevery 100 hours or annually
Check the reverse gear oil levelevery 100 hours or annually
Check engine mounts for leaks and tightnessevery 500 hours or annually
Check the V-beltevery 500 hours or annually
Fit the impellerReplace it if it is stiff or cracked.