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slow moving

  1. Case Colt Ingersoll Tractors
    Hi. I have a 1992 4020 hydrive with a 3 pt hitch. 887 hours on it. engine runs well, but it recently has been slowing down, to where it will no longer climb a slope. I changed the hydraulic fluid and transaxle? oil with rotella 15w40 and 3 qts. 80w90 gear oil. The hitch and deck lift fine...
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