Not sure what your talking about Stump jumper. No enrichment solenoid on Yamahas. Carb motors have butterfly chokes on each carb and injected has a module to increase flow at the injectors while motor is cold.
ï¿½The world will not be destroyed by those who do evil, but by those who watch them without doing anythingï¿½ Remember what He has done and remember that He is not done yet! GOD IS GOOD