T9.9ELHP question with video

[Incantation]

YouTube - VID-20101003-00003.3GP

two questions..

as you can see in the video, when i open the throttle, the motor chokes. if i keep turning the throttle it will die. this leads me to believe it's running rich. i checked the plugs and fuel filter and they are ok.. anyone have any idea what's wrong? you can hear it hiss as the throttle is opened..

also, if i open it very slowly or bounce it a bit.. it will sometime get past the choke rpm and operate smoothly.. and above that choke rpm range it operates perfectly..

lastly, what is the mechanism that moves at 0:09 seconds?

any help would be appreciated. i am comfortable working with motors but outboards and carb'd motors aren't really in my range of experience.

thank you
inc

[boats.net]

Probably needs carb removed and cleaned.

[Incantation]

Ok I"l do that.. Thaks. Any idea what that mechanism is mocing?

[aluxury1]

Its the timing advance at start

Most of the motors have a timing advance to help starting, so you areprobly watching the timing advance retreat.