lovely tractor nice sound of those air cooled engines we still run agrostar models great tractors alot better than the agrotrons .just keep the engine blow down closest to the cab as dirt gathers in the fins along the engine and can cause number six pot to go you will know when it goes as when you start it there will be a serious bang at the start and when the tractor comes under perssure it will make the same noise once its kept blowen down it will be ok you can drive it like that for weeks but it will only do more harm .best of luck with it