Author Topic: 022A choke lever and flap question  (Read 829 times)

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Offline gbal06

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022A choke lever and flap question
« on: July 02, 2021, 02:28:11 PM »
So I rebuilt my carbs and notice that when I adjust the choke it doesn't stay open and "springs" back to approximately 1/4 open. I adjusted the the flap adjusters which does improve the spring back but does not keep the flaps aligned.  For some reason I am brain farting on this, but I do not remember the choke lever "snapping" back and that I could adjust the choke lever to what ever position I wanted.  Any ideas?

Offline Kevnz

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Re: 022A choke lever and flap question
« Reply #1 on: July 02, 2021, 03:33:19 PM »
Did you have the carbs separated? Looks like each choke butterfly has its own spring which tries to close the choke, but the left carb with the choke lever has a little plate on the opposite side of the lever which has an indent and a spring loaded little ball bearing that applies pressure on the plate to hold it in any position. Lost that ball and spring, perhaps?
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Offline Kevnz

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Re: 022A choke lever and flap question
« Reply #2 on: July 02, 2021, 04:01:02 PM »
Pic showing right side of left carb. See the little ball bearing? It seats into a hole in the plate in the choke open position, and applies pressure to the plate in any other position to keep the butterflies at that place.
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Offline gbal06

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Re: 022A choke lever and flap question
« Reply #3 on: July 02, 2021, 04:34:50 PM »
Did you have the carbs separated? Looks like each choke butterfly has its own spring which tries to close the choke, but the left carb with the choke lever has a little plate on the opposite side of the lever which has an indent and a spring loaded little ball bearing that applies pressure on the plate to hold it in any position. Lost that ball and spring, perhaps?

I did have them separated and clean, but I don't remember ever seeing a spring or ball bearing on there. It could be a possibility that I did lose it, but didn't take the choke level apart. Do you have a pic of the ball and spring

Offline gbal06

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Re: 022A choke lever and flap question
« Reply #4 on: July 02, 2021, 04:41:53 PM »
Pic showing right side of left carb. See the little ball bearing? It seats into a hole in the plate in the choke open position, and applies pressure to the plate in any other position to keep the butterflies at that place.

is this the ball bearing you are referring to?

Offline gbal06

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Re: 022A choke lever and flap question
« Reply #5 on: July 02, 2021, 04:42:36 PM »
Here is the choke in action and a picture of the right side of the #1 carb

Offline gbal06

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Re: 022A choke lever and flap question
« Reply #6 on: July 02, 2021, 05:07:54 PM »
looks like the ball bearing is there but I don't know if the spring behind the bearing isn't strong enough, the plate that the bearing engages into is bent or if I need to tighten the nut down on the plate that the bearing engages into.


Offline Kevnz

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Re: 022A choke lever and flap question
« Reply #7 on: July 02, 2021, 06:12:37 PM »
Yeah, that's the right area. Hard to tell from the pic whether there's a spring behind the ball applying pressure or not. Try pressing it in with a small screwdriver and see if there's any tension. Either way, I suspect that's where you need to be looking. Carb bits appear to have been painted; any chance paint is gumming something up?
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Offline gbal06

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Re: 022A choke lever and flap question
« Reply #8 on: July 03, 2021, 09:56:55 AM »
Yeah, that's the right area. Hard to tell from the pic whether there's a spring behind the ball applying pressure or not. Try pressing it in with a small screwdriver and see if there's any tension. Either way, I suspect that's where you need to be looking. Carb bits appear to have been painted; any chance paint is gumming something up?

 I think the pain may have gummed up the hole of the plate so the ball doesn't fully engage into the plate.  I am going to try and clean the hole a bit with out taking it apart.  If anyone has any good ideas please let me know!

Offline Kevnz

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Re: 022A choke lever and flap question
« Reply #9 on: July 03, 2021, 02:25:27 PM »
Should be able to do it with a drill bit. Just close the choke a bit to expose the hole. BTW, you can check whether the spring is applying pressure by poking a small jeweller's screwdriver through the hole with the choke in the open position. That will tell whether that's your issue.
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Offline gbal06

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Re: 022A choke lever and flap question
« Reply #10 on: July 04, 2021, 08:12:55 AM »
Should be able to do it with a drill bit. Just close the choke a bit to expose the hole. BTW, you can check whether the spring is applying pressure by poking a small jeweller's screwdriver through the hole with the choke in the open position. That will tell whether that's your issue.

LOl that is exactly what I was planning to do tomorrow.  Does the ball spring usually go bad?

Offline gbal06

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Re: 022A choke lever and flap question
« Reply #11 on: July 05, 2021, 01:37:01 PM »
As ashamed as I am the only thing that needed to be done was to tighten the nut that was holding the plate on.  :( well now I know

Offline Kevnz

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Re: 022A choke lever and flap question
« Reply #12 on: July 05, 2021, 01:54:30 PM »
At least you fixed it and manned up, to boot. Good stuff! Cheap fix too. ;)
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Offline gbal06

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Re: 022A choke lever and flap question
« Reply #13 on: July 05, 2021, 02:10:18 PM »
True. And I am glad it wasn’t anything worse