The enrichener cable pulls a plunger out of a cavity in the side of the carb uncovering the fuel feed hole that is fed from the float bowl . Air rushing into the carb venturi creates a vacuum at that point and draws fuel from the bowl past the enrichener valve and into the throat of the carb .

Whats the difference between a choke and an Enricher?

An enrichener is operated almost the same way as a choke except there are two differences: When starting a cold engine, the throttle control MUST BE CLOSED for the enrichener to work properly. The enrichener does not have detents. ... Engine speed increases as the enrichener knob is pulled out.

What is an Enricher on motorcycle?

A fuel enricher acts by opening additional venturis in the throttle. Both systems will usually have a spiral plate or ramp that slightly opens the throttle stop at idle setting, to help a cold engine stay running at idle.