Mark,
This is what I found for the 2015 regulations for the “Junior EVO” carb…. Please correct me if I’m reading this wrong. It looks as though that I can change the “Idle Jet” and “Inner Jet”. I think. LOL
Idle jets stamped 30, 35, 40, 45, 50, 55 and 60 only are legal to be used. It is not mandatory that idle jet and idle emulsion tube show the same size.
Plug gauge 0,65 mm may not enter the bore of the idle jet 60 (use jet gauge set Rotax part no. 281 920).
Idle emulsion tube:
Idle emulsion tube stamped 30, 35, 40, 45, 50, 55 and 60 are legal to
be used.
It is not mandatory that idle emulsion tube and idle jet show the same
size.
Plug gauge 0,65 mm may not enter the bore (use jet gauge set Rotax
part no. 281 920).”
