I have a l3940 that died on me. I was pulling a cultivator and the tractor just lost power and died. I changed the fuel filter, checked all the Fuze and they where fine. When I turn the key there is a click like the fuel pump is working and priming. I tried turning it over with fuel lines off and it is pumping fuel. I blew air through the fuel line to see if it was restricted and it flowed better then when i took it off the filter. So whats my next step? Will the tractor try and turn over if a safety switch is bad?