Out of sheer frustration, I have decided to share my incomplete attempt at analyzing why when I push on my AC Petite's choke knob, it springs back out w/o enabling and effecting a full opening of the choke butterfly.
I am hopeful of the possibility of creating a new cable may solve the physical problem, but am not content to remain ignorant of the dynamics of the involved dysfunction.
Straightening the solid wire core cable for a length of about 6 inches from the carb end, and a full foot from the knob end, as well as the 3" stem on the knob end did provide less resistive actuation, however despite the apparent free motion of the cable in its housing the knob still bounced back out about 1/2" when reconnected to the choke lever. The cable was apparently preferring to flex in its housing, and create a steeper arch in the housing, which also pulled the non restrained choke end of the cable's ferrule off of its carb mount, as the greater circumference thus created would require.
As a temporary partial solution, I have taped the carb end of the housing to the carb, and installed 2 interwoven compression springs concentric to the exposed cable that have the effect of creating an adjustable pushing of the choke valve open. However this doesn't reliably open the choke the last 15 degrees or so, and of course should not be necessary as it is reasonable to presume that things worked correctly when new. This is especially perplexing because the clothes pin style spring concentric to the choke shaft did seem to provide a reasonable amount of choke butterfly opening force, and the cable felt fairly free in its housing. The relatively short length of the choke lever does put some considerable angularity into the choke cable against the inside of its housing as it prescribes its arc of actuation. But then again, this is entirely a stock setup, so it must have been sufficient to work properly as designed.
The only thing that I can come up with is that the inner lining of the cable housing provides too much resistance to the cable sliding through it very near the choke end of the cable where its stock length and required 90 degree change in orientation creates the aforementioned heightening of the housing arc instead of pushing on the choke lever arm.
Anyone else's insights or experiences will be appreciated.
Photos forthcoming in next post.