Gluing Magnets on Flywheel Kohler CV20

Discussion in 'Mechanic and Repair' started by RayWT, Jul 23, 2009.

  1. RayWT

    RayWT LawnSite Member
    Messages: 1

    I put a new flywheel on this mower 5 yrs ago because the magnets had come loose. They have come loose again. Has anyone had any luck gluing the magnets on instead of purchasing a new flywheel? If so, what adhesive did you use?
  2. topsites

    topsites LawnSite Fanatic
    Messages: 21,653

    Gosh I couldn't say, the odd thing is I have never in 8 years had magnets come
    off any flywheel on any engine of mine (and among others I have 4 Kohlers).

    I might recommend asking your dealer on this one.
  3. Jay19LM

    Jay19LM LawnSite Member
    from Mo
    Messages: 31

    I have done a few. I sand the back of the magnet to clean and remove old adhesive and clean the flywheel good. I use a 2 part epoxy and a small c-clamp. I put a small piece of wood between the magnet and the clamp. Tighten as tight as you can. make sure everything is clean and don't disorientate magnets.
  4. kayeproperties

    kayeproperties LawnSite Member
    Messages: 141

    I have 2 Kohler 25s and both had the magnets come loose. I thought i was in some bad magnetic time zone or something??? Im in Fla and its hott is that possibly the reason they both failed?
  5. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    Over time with the engines getting wet (rain/washing) the flywheel begins to rust under the magnets, After so long with the heat (engine heating/cooling) the rust finally pushes the magnet popping it from the epoxy.

    Why take the chance re-gluing magnets if the stator escaped damage ?

    Most likely wouldn't be so lucky when your glue job fails and wipes the stator out, Then your out a flywheel and stator......

    Have a Briggs sitting here the magnets came loose on, Busted the stator mount post right out of the top of the block.....
  6. driver

    driver LawnSite Member
    Messages: 2

    my magnets came loose also on my kohler engine, checked with three service shops, two I trust very well, they stated that the magnets would not stick again unless you spent a lot of time sanding, polishing, sand blasting, roughing up magnets, JB weld will not hold, I found a shop in Wisconsin, on ebay, Donsoutdoors, I believe, he does spend a lot of time rebuilding these and guarantees his work, will give you money back on a core, and he states he hasn't ever had one come back, kohlers are bad about the magnets coming loose, new ones are expensive, give don a call, look him up on ebay
  7. driver

    driver LawnSite Member
    Messages: 2

    ps, I believe his are 135 refurbished,
  8. Bill Kapaun

    Bill Kapaun LawnSite Senior Member
    Messages: 964

    Did you notice this thread is 8 years old?
  9. fireball756

    fireball756 LawnSite Senior Member
    Messages: 474

    hey, he gets five years between magnets, so a post every eight years seems about right

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