1993 Mercruiser 3.0 500 hour maitenance

truline

Cadet
Joined
May 29, 2010
Messages
24
Wondering what all is entailed im a 500 hour maitenance. I'm at 470 hours right now and will surely hit 500 by the end of the season, perfect timing, so I will due my annual maitenance this winter and ask is there anything else besides a tune up and water pump replacement on the out drive?
 
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