Ineed diagrams for the vaccume pump in the fuel system,

Greg, August 2008

Have a look at "Briggsbits.co.uk" for spare parts and exploded parts diagrams.

Badger, September 2008

I have tried to "fix" diaphragms, but it never works. Best to buy a new one. I am assuming this is the vacuum diaphragm in the carb. Depending on the carb, the diaphragm may set on the gas tank, or on the side of the carb. I am using 3.5 and 5 hp engines as reference. I have just overhauled a 16 hp. Yours may be different. I also assumed that the fuel is NOT gravity feed.

Robert Brown, August 2008