90s js440 cut out jumping and riding hard

Location
Australia
440 Runs great good power comp is 140 both cylinders has fresh fuel engines stock from what i know. When i take it out it runs great but last two times i took it out i was riding hard and jumping my wake and cut out and wouldnt start for 10 mins then ran fine. 2nd time i roled it on its right and same thing it wouldnt start for 10 mins then ran perfect what could be causing it to cut it im really enjoying riding it but want to fix this issue so its reliable
 
I had this problem. My problem was the stator coils were going bad. Take out the flywheel and check it out possibly. Just my $0.02

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I vote that you are having water ingestion problems.

Do you have the pto coupler cover installed?
Siphon clogged? Not hooked up?

Make sure that your air filter is just a screen(no paper element) it can get saturated with water/fuel and act like a choke....

A dry bilge makes for a happy engine.
 
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