Question about Yamaha 2003 Yz450f Yz450 Yz Wr 450 Stator Stater Electric Generator Voltage Pulse Coil
Yz450f running lean. got a 50 pilot jet and airscrew almost all the way and its still a little too lean. shouldn't need any bigger than a 45 pilot jet. replaced intake boots/joint and got a new air/fuel screw
Clockwise is rich & cc is lean which way are you adjusting?
clean the small air port in carb with adjustment screw removed.
Screw should be set 1 1/2 turns fron light seated position.
Posted on Nov 22, 2013
Testimonial: "yes it shouldn't be anymore than two turns out. it only stops backfiring when the screw is about 4 turns out. I took the carb apart and sprayed carb cleaner through all the ports. I should only be running a 46 at the biggest with about two turns out but its not working out"
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Posted on Jan 02, 2017
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