SPARK PLUG GAP

Discussion in 'Boating' started by catman-j, Apr 14, 2009.

  1. catman-j

    catman-j New Member

    Messages:
    1,020
    State:
    Eastern Nebr
    I need to know the gap for my boat motor spark plugs. The owner's manual doesn't say, neither does the motor. It's a 92' mercury 8hp. Any ideas? PM me please.
     
  2. fish13

    fish13 New Member

    Messages:
    17
    State:
    missouri
    I would call a local shop that works on older boats. They will have all the specs. that you need from their old tec manuals. Good luck and good fishin
     

  3. catfishcatcher

    catfishcatcher New Member

    Messages:
    493
    State:
    indiana
    Most generally the plugs come pre-gapped. Other than that I would call the local marina and ask them. Generally they will give you info over the phone for free.
     
  4. blackwaterkatz

    blackwaterkatz Active Member

    Messages:
    3,659
    State:
    Andrews, SC
    .030" - .032" will work for you. I don't have a manual, but that should be a good number.