While I was on a roll with this engine I decided to give these automatic carby's some attention.
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I found grumpy's thread very useful:
https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=22526

As I have never checked for warping or preloaded the diaphragm. That is why I have 4 sitting here, I have one engine here that runs great, but just would not start with auto choke or Vacujet carby. (I ended up putting a Pulsajet with a fuel primer on it).

So I have serviced them all now, I ended up with 2 good ones and have to get some diaphragms for the other 2.

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Last edited by mark electric; 13/11/12 10:50 AM.

Happy is he who penetrates the mystery of things.