Hey guys so after running my tractor for approx.20 minutes the engine stalls and bogs right down and sometimes shuts right off. Other times if I bring the throttle down it will eventually ilde properly and I can keep going. I have noticed when it bogs, my fuel filter is only half full and I have to wait for it to fill back up with diesel and I can restart and keep going. I have a new filter and filter holder on and it is still doing the same thing. I am in winnipeg where it is -30 celsius most of the time in winter. The only time I use it in winter is if I have to clear snow which wasnt that much this year. It first started to act up in late fall and I need to fix the problem. Thanks for the help