I have a 3 year-old Crownline bowrider, with a 5.0L MPI 260 HP Mercruiser/alpha.
At 20 hours of use on the motor during the first season, I had the following recommended service performed on it($375)
1) lube, oil and filter
2) outdrive fluid changed
3) belts/hoses adjusted
4) u-joints lubed
5)...