Figure 4-29.Manual choke system.
Automatic chokes (fig. 4-32) have replaced the
conventional manual choke. They control the air-fuel
ratio for quick starting at low temperature and also
provide for the proper amount of choking to enrich the
air-fuel mixture for all conditions of engine operation
Figure 4-30.Spring-loaded poppet valve in the choke valve.
Figure 4-31.Off center choke valve.
Figure 4-32.Automatic choke.