Coil on 29 hp Kaw

Discussion in 'Lawn Mowing' started by scchamblee, Jun 9, 2008.

  1. scchamblee

    scchamblee LawnSite Member
    Messages: 161

    The coil on one of the cylinders on my JD 797 went out last week. Mower is 2 1/2 years old ans 345 hours on it. ($57 part - $3-400 labor)

    Just wondering if anybody else had this problem. I didn't figure a coil would go out so soon.
  2. scchamblee

    scchamblee LawnSite Member
    Messages: 161

    nobody has any input?
  3. lawns Etc

    lawns Etc LawnSite Silver Member
    Messages: 2,277

    I had 2 go on the same mower 3 weeks ago with 110 hrs took 2 weeks to get replacements but thankfully the dealer gave me a loaner From what I hear its very common with those motors
  4. ProStreetCamaro

    ProStreetCamaro LawnSite Platinum Member
    Messages: 4,289

    Yeah its very common on kawi engines. I would save the labor and do it myself.
  5. scchamblee

    scchamblee LawnSite Member
    Messages: 161

    John Deere's brilliant engineers and put it where you have to break down half the mower to get to the coil. But yes had I known for sure that was what it was I would have done it myself. But I was not sure what was wrong just knew one cylinder was not firing. I had to go back to my real job for the rest of the week and needed it running when I got home on Friday so I could cut.
  6. bohiaa

    bohiaa LawnSite Fanatic
    Messages: 5,220

    I never did understand how a coil would go out.....

    I have herd of them failing, Just never seen a dead one.
  7. jkilov

    jkilov LawnSite Bronze Member
    from MS
    Messages: 1,415

    Something to do with poor insulation. It gets fried off if the coil is overheated. Why this happens, I have no idea. Perhaps using wrong spark plug, different resistance causing too much current. Or poor manufacture I just don't know.

    I wish someone smart would explain it to us all.

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