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Stump The Technician...Name That Failure,,,

Discussion in 'Mechanic and Repair' started by piston slapper, Dec 3, 2012.

  1. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Your ability to correctly identify an engine failure is the difference between getting paid on a warranty..or eating a ton of parts and labor...

    Name The Engine And The Cause Of Failure...The weakest link..

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  2. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    It appears to be a Kohler piston (your favorite) and something went amuck with the valve keepers and dropped the valve, But it would be easier to guess seeing exactly what you seen as you opened it up..... ;)
     
  3. BigFish

    BigFish LawnSite Silver Member
    Posts: 2,911

    Looks like the valve stem broke at the keeper groove.
     
  4. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Nah...its a 4mix....Stihl
    Yep...valve broke at the keeper...
    That's just where the valve was when I removed the jug...
    What a PITA engine to work on....
     
  5. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Sorry about the poor quality pic...all that talk about digital cameras being cheap now..
    Its been a good one for many years...maybe time to give Santa a hint....
     
  6. BigFish

    BigFish LawnSite Silver Member
    Posts: 2,911

    I was gonna say stihl.......what with the two rings and all!
    I used to work at a Stihl dealer, but never ran into that.

    Your right about the pain to work on. They're way over engineered if ya ask me. It's a freakin' weed wacker for chits sake!!
     
  7. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    Kohler got me taking pictures of broken engines over 10 yrs ago...
    Figured. I'd start a thread to show you guys some of the more unusual failures I've come across..
    Feel free to add your pics...as long as they are lawn eqpt related...
     
  8. grandview (2006)

    grandview (2006) LawnSite Gold Member
    Posts: 3,466

  9. BigFish

    BigFish LawnSite Silver Member
    Posts: 2,911

    An easy one....

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  10. BigFish

    BigFish LawnSite Silver Member
    Posts: 2,911

    A tough one........

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    Bonus question for all you "master tecnicheeions" : Can you tell which plug is the good one?

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