no i dont know i am still diagnosing the issue i bought the tractor for the attachments that came with it reallly with no intentions of keeping it. it has been sitting in a machine shed for 15 years.the owner said it got hot and parked it. a friend of mine had the thing running in about a 1 hr. and it seems that other than bad blowby the thing is sweet. there is no white smoke from the exhaust.no bubbles in the radiator level on coolant stays the same and oil level doesnt change. i have never worked on tractors before but i do kinda like working on this one. any way i guess my curiosity has gotten the better of my again so here we go.thanks for the info i will probably have a ton more questions as this project gets underway best reguards