Change oil, filter, and seals

Change water separating fuel filter  

Inspect throttle and shift cables

Fill power trim fluid

Change gear lube for lower gear casing

Inspect and grease propeller and prop shaft splines

Apply corrosion protection spray to powerhead

Battery test

Inspect ignition and electrical system incl wires

Inspect and adjust top cowling latch if needed

Check for water, fuel, oil & gear lube leaks

Check trailer tires and re-torque lug nuts