I am trying to understand this machine! Several members have all sorts of ideas. The issues that still bother me are:
*What sort of fuel level pins are available, I have noticed several colours.
*What do the brass shims look like, that Bruce is talking about, that act on the main spring on the diaphragm to adjust the applied force on the poppet valve.
*Is there a modern universal type tool that can test all sorts of problems on small engines for electronic problems?

Thanks dudes for all your help so far! What a fantastic site! rockon