A friend of mine just got his 6500 4wd. He started mowing hay with it and was really impressed with the power that it had. The tractor was running great when he shut it off for the evening. The next morning, he started it up and started going up a hill and all of the sudden it made a puff of blue smoke and lost power. Now its missing and has no power whatsoever. The tractor only has 8 hours on it. Does anybody have any idea what the problem could be? Thanks in advance for any suggestions.