Fire from muffler! Exmark 36 walk behind

Discussion in 'Mechanic and Repair' started by tonychapman, Oct 12, 2007.

  1. tonychapman

    tonychapman LawnSite Member
    Posts: 7

    I have an Exmark 36 walk behind that has visible fire coming out of the muffler. I took the muffler off and problem is still there. I don't have any clue! Any help is appreciated.
     
  2. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    What engine is on this dragon ? Model numbers......
     
  3. tonychapman

    tonychapman LawnSite Member
    Posts: 7

    15 hp Kohler command Pro 15 - model# cv15t - serial # 3619232011

    thanks
     
  4. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    Sounds like the exhaust valve may not be closing fully, Possibly a small piece of carbon got in the seat area.

    A cylinder leak-down test would show if it is in-fact a valve problem.
     
  5. tonychapman

    tonychapman LawnSite Member
    Posts: 7

    Unfortunately, sounds like something I'm going to have to take to the shop. I appreciate the help.
     

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