The EFI WR has only on knob at the throttle housing. Here are my findings so far:
One can turn it forward (counter-clockwise when viewed from the side) to raise the idle speed , or back to lower it.
When pulling out that knob firmly, it notches and stays pulled, that is described as cold start "choke" position.
There is a mechanical stop at "max-idle", my idle setting is 34 clicks below that max.idle setting.
At 34 clicks before max. idle I can lightly pull out that knob (w/o it clicking into choke-setting) and idle rises.
When hot (and not in gear) slightly pulling the chock-idle knob as described, gives e-start at first button press, always.
How can one single knob act as coldstart-choke (more air + lots of more fuel)
and a hot-start knob (just more air) at the same time?
Does the CDI know about the knobs position? I didn't find a choke-knob position sensor.
If not and if that knob does NOT affect the throttle's butterfly position, but simply opens an air bypass path,
then raising idle would effectively mean creating a lean mixture!
Can anybody describe in detail what the
- idle adjustment action (turning the knob) and respectively
- choke action (pulling it out)
are doing technically?