Topic: 750chokesticks

[johnyvilla]

Ive had my K6s airbox off for the second time now, due to one or two choke valves staying closed. The linkage bolt that runs through the carb, and moves the slide up and down, has some spacers and a wee nut. If I loosen this nut and move the linkage I can persuade the valve back on track with the rest of his brothers. Once tightened the whole thing works well but overtightend and the action is stiff. Now, it should be noted that this linkage was disassembled, sat a while, and with the aid of photographs reassembled. I used 4 new nuts as the originals were rusted. I'm sure pics would help but my old lady has the camera. has anyone run into something like this?

[736cc]

I recall its not ez to persuade the butterfly into place and attached to the linkage after its been disconnected. You hafta juggle the carbs and stick a skinny screwdriver  in there. Are you sure its connected?

[johnyvilla]

Yea they are connected and function. I just don't understand what keeps the nut from loosening. It loosens before my eyes.

[Clyde]

I have just finished rebuilding 2 sets of 750 carbs for a K0 and a K1.
The nut you are referring to I presume is the one that holds the choke lever in the carb body?? This nut should have a spring washer and a normal washer underneath it which then hold a nylon insert in the carb body.
Originally Honda punched the end of the lever shaft splaying it out and this stopped the nut from unscrewing. When the nut is removed this is effectively removed from the end of the shaft and hence the nut will unscrew.
The best means of preventing this is to re punch the end of the shaft with a centre punch to prevent it unscrewing. It does not need a lot of force to do this.
Alternatively you could try some loctite, but I have not done this.
Does this make sense or answer the question?
Clyde

[johnyvilla]

Yea that makes sense. The end of the bolt is no longer splayed for some reason. Ill try the locktight, thanks