idle mixture screw 200 txrr

[gill]

what's starting idle mixture screw setting for a 1993 yamaha 200 txrr

[rodbolt]

1 1\4 port and 3\4 stbd.
plus or minus one eighth turn.
if the carbs are done correctly and the motor is mechanically correct it works every time.
the actual air fuel mix is determined by the pilot air jet and pilot fuel jet the screw just lets more or less of this mixture into the intake.