Well, I'm a bit stuck. I have BX2230 with around 300 hours. I have had it for 6 years and never had any issues starting. I left for a week and my wife wanted to mow the lawn. She tried to start the tractor and it would not start. She thought it was the battery but it was actually just in gear. She connected a Li-ion jump starter to the battery which, of course, did not move the tractor into neutral so the tractor did not start. When I got home I tried to start it. After putting it in neutral it cranks just fine but will not start. It just cranks and cranks. A small amount of white smoke comes out of the exhaust but otherwise nothing. I replaced the fuel filter and checked the fuel pump - no issue. The stop solenoid appears to be working fine (flips on when the key is turned off and then de-energizes after a few seconds). Is there anything my wife could have damaged with the li-ion starter? It runs at 14V, which should not be a problem. Maybe just a coincidence that it will not start now? The fuel is new. Any ideas?