black smoke is rich, blue is oil (white for water but we got no h2o).
move the main
jet's needle clip up 2 notches.
remove tank, open top cover, like a dentist pullung a tooth
that plastic clip will come out, watch for tiny washer on needle too.
the washer adjusts the off position of the needle and the e-clip the mid-high range.
if you put around town under 45 or cruize 55-75 which is worse for smoking?