Ooh, I get to be the first one to make the obligatory reply:
Boat manufacturers don't usually have owner's manuals, the service manual that you want is for the engine. Which of course could be pretty much anything. So we'll need to know what engine and drivetrain you have, and for bonus points, the serial number. As for parts, click the iboats logo at the top of the screen. You get a discount as a forum member