Manuals
I have a seadoo 150 Speedster and I have been listening to this and other forums, a lot of different opinions and a fair amount of misinfomation. But I quickly decided to do my own oil changes, got most of the info from this site which is very helpful for the 215 hp supercharged engines. I changed oil at 14hrs but I was checking oil closely for color and level from 10hrs till I got chance to change. With good preparation it took about 30minutes, I had bought a cheap oil pump for marine engines at Walmart for $18 that worked great. I hooked up the exhaust water, warmed up boat for 5min or abouts at idle. Sucked out 3qts of old oil from oil level dipstick, replaced filter, checked orings (all good, but I had them to change of needed), put in the 3qts of Seadoo oil that I ordered on line from Parker Yamaha, and I have the satisfaction of knowing every thing was done correctly( I even rinsed the filter checking for metal-none found) and it was done very cheaply. PS, dispite all you will hear, this does not void warrantee, I know this will get alot of replies to the oposite but they will be wrong, so, Boat is now ready for next 100hrs!!!