LA 105 restart issue

[hogrider49]

My LA 105 starts easily and runs well. However, if I turn it off, it will not restart until such time that it cools down again. Any suggestions?

 

[dougand3]

What's the engine model? Near spark plug or valve cover.
Fuel tank vent clogged? Open cap and see if changes.
Coil fails when hot? Check spark when hot.
Valves out of adjustment? Check clearance.