1972 Carb Choke Valve Flat Help

[geekydestro]

I am rebuilding the carbs on a 1972 CB750. I am having an issue assembling the choke valve/flaps to the choke rod lever. All examples of assembly are for the butterfly style, and mine is the spring loaded door/flap with a lever that is housed inside the slot the choke valve goes into. I can't seem to get them in place. WheBasically the lever fits in a slider on the valve and somehow has to be slipped into a slot to attach to the rod.

Any ideas?

[TOOLS1]

Those parts are not usually removed when cleaning. Putting them back together is like doing one of those funky little puzzles. You know the one with the two bent nails you link together, or the horseshoes with the little ring you remove from between them. You must get the lever into a certain position, so that as the slide goes up into position the lever will twist into the slot.
TOOLS

[geekydestro]

The issue was that the choke valve was missing the spring and the small door on one of them. I ordered one off of ebay, so i had to pull the old one. I didn't think it was going to be so tricky putting it back in.

[TOOLS1]

I think it would have been easier to have just replaced the carb body. But they can be put back together. Shiny has done it on several carbs. He takes them out to powdercoat them.
TOOLS

[geekydestro]

Thanks Tools, I reached out to shiny for advice.

[TOOLS1]

geekydestro wrote

Thanks Tools, I reached out to shiny for advice.

OH NO!
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[shinyribs]

Sheesh...it's been awhile since I've done one.

There's nothing to fasten the lever to the choke valve. The little nub on the lever just rides in the slot in the valve. Once you put the bolt in there it holds the lever in place firmly enough that it won't disengage from the slot.

Hope this helps. If not, holler back, and I will get some pics.

[geekydestro]

Thanks, for checking. I can't seem to fit them correctly without the lever and slot falling apart while trying to put them in the carb body.

Is there any trick to keeping them assembled while trying to insert them into the carb body?

[geekydestro]

I figured out hot to do this fairly easy.

Need a light that can stand on its own, you need two hands.
A dental/ any small pick to move the lever around


• Shine light in the opening of the carb body so it lights up the internal area.

• Insert the choke flap/valve in the carb body

• Insert choke valve lever into housing slot from top, and back it into the wide slot that connects to the  
  choke rod.

• With the light shining from the other side of the carb body, look through the carb body, you can see the  
   choke flap slot that the lever is supposed to slide into. Use the PICK to adjust the lever to fit the slot. It is  
   pretty easy if you shine the light to light up the internals of the carb body.

• I also used the pick to gently line up the hole with the choke rod so it can slide in easily, without  
  disassembling from the slot to the flap inside the carb.

* TIP, insert the choke rod first and place the rubber spacer all the way to where it would fit before the lever and choke valve are inserted. Then pull it back out up to the spacer. This will put the rubber spacer into the proper position before inserting the chock valve. Otherwise you will knock the lever and chock valve apart trying to push the choke rod and spacer into position with the other parts connected.

[shinyribs]

That sounds about right. Now, walk away from it for a year and a half and see if you can recite that from memory. lol

Thanks for the detailed info. Im sure it will come in handy for someone someday.