<VV> Choke Coil VS Pull Off - was ambient

[Mark Durham]

I didn't include the pull offs because the discussion was temperature
and how it acts on the spring. But thanks for the reminder. Mark
Durham

On Sun, Jan 16, 2011 at 1:29 PM, J R Read <hmlinc at sbcglobal.net> wrote:
> Lonzo has it right.
>
> The coil (when cold (cool?)) allows the choke plate to close.  Normally,
> before turning the key to start position, the operator gently pushes the
> skinny pedal to the floor and gently releases.  This "sets" the choke to
> closed (or nearly so) position and the coil is tightly wound at that time.
> There is an adjustable rod through the head connecting the coil to the carb.
> As the coil warms it expands and allows the pull off to do it's job.
>
> The pull off is controlled by vacuum.  They do go bad and can be tested
> easily by pushing the metal tab on the back in and then covering the plastic
> hose connector with your finger and releasing the metal tab.  If it comes
> back out, the diaphragm inside is NG and the pull off needs to be replaced.
>
> Adjustments are in the LM Chassis manual at 6M-6 and 7.  I did not look up
> the page number in the EM manual, but they are there too.
>
> Picture attached below.
>
> Later, JR
>