Kawasaki FD620D lacks power

Discussion in 'Mechanic and Repair' started by orc, Jun 6, 2006.

  1. orc

    orc LawnSite Member
    Posts: 2

    I have a John Deere 425 lawn mower with Kawasaki FD620D that has the plastic cam gear replaced with new cam and metal gear, new govern gear and water pump gear. Now it runs good until I start the blades then it bog down some for a few seconds. When I go up a small incline it bog down so much it dies. I also like to know what's the valve-rocker arm clearance.
  2. MowerMedic77

    MowerMedic77 LawnSite Bronze Member
    Posts: 1,164

    Cold .010"
  3. orc

    orc LawnSite Member
    Posts: 2

    Thank You, Mowermedic77. have any idea about lack of power?
  4. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,022

    Did you get the governor adjusted properly ?
    Valve adjustment is below.

    FD620 Valve Adjustment.JPG
  5. TLS

    TLS LawnSite Fanatic
    Posts: 7,937


    Is the valve cover gasket reuseable on the LC Kawi's? Or is there even a gasket? Just some schmootz?

  6. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,022

    They have a rubber 'O' -ring type seal, So if they are in good shape one could put a thin coat of loctite gasket eleminator on them and reuse them. Spray a little carb. & choke cleaner on a rag and remove the oil from the 'O'-ring and head surface before putting the sealer on.

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