You will need diaphragm pn 272538S. Two different carb to tank mounting gaskets so date code is needed but it looks like it is probably the 692241. Hopefully you don't the 3 quart or 1 quart fuel tank as they are NLA now. Just that fuel well does rust out making a new to the engine tank necessary.
I have seen a couple carburetors that inhaled so much rust that the carburetor internal passages to clogged solidly which is very hard to clean out.
Need to re-open this query with regards the carb to tank gasket as the engine starts and runs when sprayed or fuel is added directly, and then dies.....
When putting the unit back together, that 692241 gasket disintegrated into pieces and my question:- is it there to form an airtight seal between the tank and carb so that it can "suck up" the fuel? I'm thinking 'no' only because of fluid dynamics where the head/opening of the tube is fully submersed in fuel, therefore no 'air-gap' to impede suction.
As much of an experiment than anything else I created a gasket just so I could "put it back together" but the material is not air or fluid tight.. I'll have another good look at the pickup tube to see if that's also clogged..
Somehow I've managed to remove the jet (#691250) from the carb - does it go back in where I've marked on the image?
My mower carb went well, thanks to the tips above.
Cheers,
TC.
