I literally have a spare, brand new, part #6, in my hand as I type (exact same part #).
As the actual choke "flap" and lever are both recessed (each side) in part #6 it should not bind on anything.
The only thing that could be the issue is part #5 installed, facing "inwards", up against the choke flap.
Hi! I've made a short video to show the problem I'm having with this part. Please take a look and tell me if anything looks wrong?
Many thanks!
Pic's are worth a thousand words!! Video, even more!!
Just what I thought.
Flip that metal piece (with the two long bolts)
OVER, then it'll clear. The "concave" should be facing
outwards.
In post #10, (the picture I posted),
place part #5 as it is in the diagram.
As it IS, the air cleaner likely wouldn't bolt up as the nut (on the metal piece) is INWARDS, NOT outwards.
Flip it over and everything will assemble correctly..
***Make sure the carb to block gasket is installed correctly. That gasket is very easy to slip downwards and cause a vacuum leak..**
Please post back before taking off trimming!