I just got my "new" '04 2120 DVSC. The boat is immaculate! Only has 81 hours on it, but after reading all the fuel filter, and water separator notes, I'm already getting a bit nervous because I'm a pretty lousy mechanic. What would be the best guide to purchase for Yamaha engine (Four stroke Yamaha 150) repairs and maintenance? The boat came with 7/8 full tank of gas. Started up well and ran well, but I haven't changed anything yet. Would like to get one of those Racor water separators. I appreciate your help......Bill