1978 P125x
Malossi 166 kit
Spaco 20/20
I want to run this thing to the point where I foul plugs, then I can know when to start dialing the mixture back.
Am a bit confused on the rear screw. I have seen 3 or 1.5 turns out, but what does what? Is turning in the screw giving me a richer or leaner mix?
Also I have a choice between BE3 BE4, and BE5 middle, a 150 or a 160 top, and a 100, 102, and something else a bit bigger - but can't determine - on the bottom.
Seems to want to seize on me at higher speeds, and the plug is a nice chocolate brown, yet dry. Premix 2%
Any help wouldbe greatly appreciated....