No, its a common issue with the pulsajet - stemming from a age warped mating surface (run a straight edge over the carby mounting surface and you will see issue)

They released a repair kit (with a pin and a tiny teflon washer) to seal the gap - not especially easy to come by unless you want 10 sets.

My home made solution has worked 2x now - cut a thin piece of line trimmer fuel pump diaphragm (one of the clear mylar or blue teflon ones not thick rubber) and install (holding in place with some grease

Works perfectly then

Will post a link when I find it on here

Edit; 91202 is horizontal shaft isn't it - different carby. I was thinking it was a vertical shaft. Only thing I can think of is there were 2 slightly different gasket and diaphragm designs - maybe the wrong ones?

Last edited by Tyler; 08/03/21 03:39 PM.