Almost everything needed attention on this tractor and I mean everything. Only things I have left is to do is overhaul the engine, remote valve and power brake valve. There were things wrong on this tractor that must have taken a previous operator years to mess up. It does run and operate well now and when it is done should be a good tractor. I removed the replacement Stanley muffler and put the oval muffler from a 970 on it. It sounds much better and quieter, the difference is amazing, this muffler will stay on. The air filter I removed set a new record for me as being in service the most years. Even if it was a couple years old when installed we are still looking at way over 30 years, not good. Rod.