tachometer

Discussion in 'Mechanic and Repair' started by mcdansley, Jul 8, 2005.

  1. mcdansley

    mcdansley LawnSite Member
    Posts: 14

    I recently purchased a tachometer for my Kawasaki 6hp 4-cycle engine (FJ180V) for my WB mower. The set-up procedures asks if the spark plug fires:

    a) twice per revolution

    b) once per revolution

    c) every other revolution

    What is the case for this engine?
     
  2. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    A 4-cycle has to be (C)
     
  3. CCWKen

    CCWKen LawnSite Member
    Posts: 113

    Unless you've got a really smart coil setup, it fires every time the magnet passes through the coil iron. In other words, every revolution.

    It doesn't hurt the engine to fire on the exhaust stroke. In fact, it helps burn any remaining fuel.
     
  4. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024


    You are right ! I was thinking about the cycles, Sorry for any confusion.
    It's been a long hard day. :dizzy:
     
  5. mcdansley

    mcdansley LawnSite Member
    Posts: 14

    thanks alot!!!!
     

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