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  1. Hydrostatic Drive Tractors
    I am needing a little help with my 89 420. I have searched through 20 pages on here and have found similar problems but no solutions. I bought the 420 this winter with around 800 hours on it. It starts easy and runs great. After about 30 minutes of mowing if I go from forward to reverse to...
  2. Hydrostatic Drive Tractors
    Hi all, I've got a situation that's stumped me, but more importantly, has stumped my uncle who has 50+ years of experience with small engines. Here's the situation: I have a surge in my 316. It has the Onan B43G in it. The engine is fresh. It was originally a generator and never got used...
  3. Hydrostatic Drive Tractors
    I had a surging problem with my 318 after it would run for maybe a half hour the surging would start and would not stop until after I shut it down and let it cool off. I think the problem has been solved with a 20 dollar 12 volt fuel pump I installed on it . I think its a 2 to 4 psi pump. I have...
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