My father has a Husqvarna LTH1542. He had been mowing for about 5 minutes and it just died. We're pretty much lost but have tried a couple things. It will turn over. Changed air and gas filter. Put in new plug and it does fire. We don't know much about the seat sensor but went ahead and tried to "jump" the connections. NO luck there. Put Stabil on tank. Sprayed starter fluid in carb, it will run just for a second. I guess that's about it. Can anyone help? Thank you in advance.