I got the 420 started by towing it and bump starting it. It runs anywere from 2 minutes to 5 minutes fine and then starts missing or choking out like it is running out of gas. I pulled the plug on the bottom of the carb and fuel pours out of it fine. If I am quick with the choke I can keep it running most of the time.
This tractor has run flawlessly for the past 8 years so I am puzzled. Seems like it could be electrical or fuel.
I took the carb apart twice and it looked perfect inside so I am really wondering where to start.
Any advice would be appreciated.