Micah and Michael, you guys obviously know your stuff cos the way I was thinking, when changing the main jets down from 145 to 140, I wasn't sure if I would need to adjust the air fuel or not. Well, looking at when the mains take effect it stands to reason doesn't it.
Anyway, I changed them and definitely needed to adjust the air fuel thumb screws out quite a bit to get Ferdie running sweet. Btw, I have a method of adjusting them individually that works real well. No gauges, just patience adjusting one cylinder, then the other and so on till he's running nice.
Anyway, thanks for your responses guys. Goes to prove that whilst all the various components have their primary responsibility, they still all work together as a unit to give overall good performance across the range.
Btw, Ferdie was running slightly rich last dyno I did, plus I wasn't happy with the fuel economy. It wasn't over the top or anything but after a while we get to know when a little tweaking is in order. I must be pretty close now I'd say but I'm still considering buying an A/F Ratio Gauge cos I work with a good welder who could do a good job with the plug.
Cheers boys and Happy New Year to you all.
Staffo
