New Tec 3.5 internal threaded shaft size?

[aprophet2]

Anyone know what size bolt fits the internal threads inside the shaft of my new Tecumseh powersport 3.5 engine? I don't seem to have anything that fits in my spare bolts and don't know what to grab at the hardware store. THanks!

 

[jrzmac]

if it's to hold on a clutch, this is what I had to use: 3/8"-24 x 1-1/2"