I know that this is a well discused subject, I read alot about this but Im still wondering how to fix the problem. I installed this engine on a Edge 540 under its cowlling.
My OS 91fx is fitted side ways, with a Bisson pitts muffler. I use an APC 14X7 10% fuel and the remote needle valve is made of plastic.
It had no more than a gallon through it. When run just reach it gets over heated and quits. So I run it very very very reach and runs in normal temps. This ofcourse gives me problems with idle running and no power at all plus it takes it 3-4 seconds to pick to full throttle.
Any one who actually fixed this problem?

Thanks for reading this........