Jimer: Some of these all makes seem to give trouble. Not sure quite why. My suspicion, they are tractors not used very much, thus condensation develops inside castings, then the moisture creates rust. I've had tractors around all my life running as many as 5-9 of them at any given time through the the 60s, 70s and 80s. All but 1 or 2 of them were parked for 4-5 months in winter. Still have 3 tractors and 2 of them never move all winter. Bacically when fall comes I check the antifreeze, shut them off and walk away. When I said all my life, dad had 1 when I was born, 2 by the time I was 8 and a 3rd one came along by the time I was 15, and it grew from there. I've never blocked a clutch, and I've never had a stuck clutch. Bear in mind these tractors were used a lot, some as much as 1,000 hours per year. I don't do that many hours with these little offset Farmalls nowadays, but I expect they each see close to 50 hours. I still check the antifreeze and walk away. My advice would be, if your doing less than 50 tractor hours per year block em. Doesn't matter what make, tractors were all designed so heat evaporated condensation, and that requires a few worked to the limit, 8-10 hour days.
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