of the coil spring 22 within the upper housing 28 in alternate embodiments other variations and mechanisms for holding the coil spring 22 in position within the upper housing 28 can be employed as well regardless of whether the coil spring 22 is retained within the upper housing 28 in either of the above described exemplary manners or in another manner the upper housing is fastened to the lower bracket 26 for this purpose as shown in fig3 a a pair of screws 36 can be used depending upon the embodiment additional screws 36 or other fastening and or engaging mechanisms can also or instead be employed to connect the upper housing 28 to the lower bracket 26 additionally mounted upon and supported by the lower bracket 26 are the coil spring 22 particularly insofar as it is retained by the upper housing 28 the link 20 the dust shield 30 and the actuator and the locking nut 32 and 34 respectively the lower bracket 26 in turn is attached to the body of the carburetor 2 by way of a screw 38 with the link 20 being coupled to the choke plate shaft and arm assembly 14 in other embodiments a plurality of the screws and or other fastening engaging mechanisms can be employed also or in addition to the screw 38 for the purpose of attaching the lower bracket 26 and thus all of the other components attached thereto to the carburetor 2 in order for the coil spring 22.