Ok. Your last post helped. I guess you posted while I was posting. Thanks. I get it now, you chop the plug to check how you're burning. Nice.
Last plug I pulled was black and moist. To rich then?
the way you just pulled it, after riding it in all 3 jetting ranges will give you false readings, any of the 3 ranges...pilot/needle/main could be slighty rich or lean, tainting the color
and your pilot and needle will be fine for just a pipe. but the main will need to go bigger, prolly 270/280/290 as mentioned above, and will depend on your local temps and elevation
sea level will require a larger main than 2500' elev.
you must use a new plug, run it wide open into 6th gear, quickly pull the clucth and kill the motor, replace plug and ride back
this allows only the mian jet, while at wide open throttle to color the plugs "smoke ring"
you must cut off the threads, or use a flashlight and magnifying glass to see the "smoke ring"
that tells the tale of what the main jet only is at...rich or lean
you want a nice cardboard color
a little darker is rich and ok
lighter grey/no color is lean, and will fry your piston
and in response here also, to your other post...........
after cutting off the threads to veiw the smoke ring, the plug is garbage
small price to pay to get your jetting correct
