Gee - oil keeps going up so...
ref: kawasak sxr 800 2 cyn 2 stoke
A 2 stroke stock pwc max rpm 6500 - i ride say 4000 - 5500 all day long... seriouly hours and hours, 4 - 5, following wake boats.. I know some who have yamaha's and do a few tricks on thier not stock skis.. but they only last...