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Post by Dave J on Aug 9, 2018 20:14:25 GMT
Just relpaced the float and needle on on a 90cc Primavera circa 1970 for a non technical friend. Fresh fuel - starts fine if you open throttle more than halfway then won't run below half throttle..any ideas?
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Post by tzsteve on Aug 9, 2018 20:42:05 GMT
sounds like it might be rich.
try moving the air screw. 1/2 turn in and 1/2 turn out see if it runs any better.
if the engine wants to rev itself to death before it dies it could be to weak check for kinks in the fuel line then check for blocked jets
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