I rely pretty heavily on my little B6100 tractor, and so far it hasnt let me down. Its going to need some stuff such as a new clutch, and tires but im concerned that the machine isnt worth the money. It smokes a little heavier than it should when runningm (lots on start up and it cleans up a little as it warms up) and i know the engines been rebuilt once. Overall it runs good, i just dont know the history behind the machines, and need it for snow removal etc... hour meters busted at 7000 hours. I just dont want to put the money into the new parts if the engine doesnt have much life left, and i could get something with a loader. I love the machine, and wouldnt hesitate to put some money into her if shes got some life left. Just looking for suggestions or advice. Thanks