I have two 1998 XL 760 Yamaha Waverunners. They both need to be manually primed with gas every time I want to run them. They also foul out the Spark plugs very often.
Do I simply need to rebuild the carburetors? Do I need to install new diaphragms?
Also where do you suggest to get parts, and are complete carb rebuild kits available?

Mark, March 2009