1982 50/hp loses power after 1o minuets of running

[Bigfish#1]

1982 50/hp ran good this year until two weeks ago. It runs good at top speed for about 10minuets then it loses power and fouls the plugs.
I have replaced the Stator and trigger both were bad, what’s next?

 

[racerone]

Not sure how you could have a bad stater and bad trigger at the same time .---------------Have you checked the water pump / cooling system ??-----------Mixing gas and oil properly at 50:1 ??

 

[fastjeff]

Sounds like gas starvation to me: plugged vent, bad pump, clogged filters, etc.

Jeff