From: ` on 16 Jul 2010 00:24
What is the correct name for a pilot air screw with a cross drilled
hole in it?
These were used on Mikuni VM carburetors 30 years ago...
AIR, once the screw was turned out about 2.5 ~ 3.0 turns, the cross-
drilled hole by-passed air and made the mixture as lean as the pilot
jet would allow...