found some links to some jetting info for our 4 stroke members .....
Jetting Guide: The Yamaha / Keihin FCR Carburetor
ThumperFaq: FCR Jetting
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2 carbs in 1: understanding and adjusting the fuel screw
ThumperFaq: MXA Fuel Screw
******************************************
more fuel screw info:
ThumperFaq: MXA Thumper's Fuel Screw
******************************************
add any helpful links below and i'll add them to this post
Jetting Guide: The Yamaha / Keihin FCR Carburetor
ThumperFaq: FCR Jetting
******************************************
2 carbs in 1: understanding and adjusting the fuel screw
ThumperFaq: MXA Fuel Screw
******************************************
more fuel screw info:
ThumperFaq: MXA Thumper's Fuel Screw
******************************************
add any helpful links below and i'll add them to this post