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-   -   2004 Johnson 4 stroke outboard motor (https://www.askmehelpdesk.com/showthread.php?t=573339)

  • Apr 28, 2011, 03:33 PM
    lawrencecharles
    2004 Johnson 4 stroke outboard motor
    How do you change the spark plugs?
  • Apr 28, 2011, 03:37 PM
    Stratmando

    Most Unscrew, and Screw back in.
    Buy your Replacement set, This will determine which Plug Wrench you'll need.
    If you don't feel you can remove and replace, at least you will have the parts and All Mechanics, and many people can install for you.
  • Apr 29, 2011, 10:45 AM
    lawrencecharles
    The spark plug has a cover or cap over the top of the spark plug,I don't have any idea how to take it off without causing damage. Motor is a 2004 40 hp 4 stroke Johnson.
  • Apr 29, 2011, 04:03 PM
    Stratmando

    If you like this motor and are going to be working on it. I would Buy the Shop Manual, It will save Time and Money.
  • Apr 30, 2011, 05:31 AM
    lawrencecharles
    Thank you for your help. Larry

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