The enrichment valve only works at low throttle settings.

If your bike runs better with it on.....you have a carb problem and not enough fuel flow at low throttle settings.

A choke uses a flap to reduce the amount of air supplied while still using the fixed amount of fuel, thereby richening the mixture for cold operation.  Our bike has an enricher which gains a similar outcome but in a different manor, it adds fuel to a fixed amount of air.  I would venture to say that if your bike is running optimally with the enricher being used that your carb is very lean on the low throttle as Dave pointed out.

What mods have you done to her?  

[quote author=764D47516C4D5147220 link=1381181266/0#3 date=1381199981]A choke uses a flap to reduce the amount of air supplied while still using the fixed amount of fuel, thereby richening the mixture for cold operation.  Our bike has an enricher which gains a similar outcome but in a different manor, it adds fuel to a fixed amount of air.  I would venture to say that if your bike is running optimally with the enricher being used that your carb is very lean on the low throttle as Dave pointed out.


No mods, but not the original owner. So this bike does not use the normal style choke. The choke pull is actually operating the enricher, which also operates on its own on deceleration.