Carb Diaphragm

[Peter Y]

So I opened up my Carbs today, and surprisingly everything was really clean! (Good for me). So I was trying to put back the carbs together and I ran into a problem at the end where the diaphragm goes in. When I put the whole set up in the diaphragm doesnt go all the way in, so if I try to make it flush with the seat the diaphragm wrinkles. What am I doing wrong?

 

[Jeff0133]

Just make sure it seats well on the outer edge where it sits on the carb. There is a little tab somewhere that should go in its slot.other than that....maybe your diaphragm is toast?

 

[xschris]

Post pics.

 

[Peter Y]

 

[Peter Y]

Also I dont think mine is a Mikuni bs34... it just looks different.

 

[Jeff0133]

If it were me...i'd change those

 

[xschris]

Your fine. Looks like ones that haven't shrunk much. When they are out of the carb do they still have the ripples in them?

 

[Peter Y]

No, the ripples happen because if I don't ripple them , the diaphragm sits too high and above the metal.

 

[xschris]

Does the slide go all the way down? Your diaphragm looks like it's new or has little use.

 

[Peter Y]

This is what it looks like when I don't crumple it

 

[BBS360]

Also I dont think mine is a Mikuni bs34... it just looks different.

Looks like a stock set of '82 carbs.

 

[xschris]

Here is what a set that I have looks like. These are old diaphragms from 1980.

Over time they do shrink. Even to the point where they will not fit into the groove at the top.

 

[DK2600]

Still I would change those - I believe you find you new ones on ebay