742B dies after 20 minutes

[Bobcat742]

742B gas. Starts runs great for 20 minutes and dies. After it cools down I can startit and it runs great until it heats up then it spuyters and dies. It has an electric fuel pump which I can hear humming when I turn on the ignition but until it cools down it won't start.
Any suggestions would be greatly appreciated.

 

[Scott Cee]

I'd try mounting the pump elsewhere. They have no fuel return line so they're at higher risk of vapour lock. You could get a return regulator and add one in, but that seems excessive.