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Gas coming out of muffler exhaust

Discussion in 'Mechanic and Repair' started by danfu, Feb 8, 2014.

  1. tenndigger

    tenndigger LawnSite Member
    Posts: 54

    I had this happen on my Hustler mower. The needle and seat in the carb is
    letting too much fuel come into the carb when it is not needed. You can buy a rebuild kit or for a little more purchase a new carb. Lots of these carbs are for sale on ebay.
     
  2. Patriot Services

    Patriot Services LawnSite Fanatic
    Posts: 12,441

    My experiences with stuck needles lead to overfilling the oil and hydro locking the cylinder. I've never had one stick open and the engine still start and if it happened while it was running it stalled out.
    Posted via Mobile Device
     
  3. danfu

    danfu LawnSite Member
    Posts: 57

    All in all it's really been a good experience. I realize I spent a lot of unnecessary effort taking off the cylinder head...but now, having cleaned the carburetor, inside and out, discovering that one of the valves was stuck, I have a good feeling about it all. I think in retrospect, the more one knows about one's lawnmower the better off one is...and I guess most of you guys know your lawnmowers like I know lawn sprinklers...I really appreciate your expertise. Next time before I even lift a wrench...I'll ask.
    Thanks...I'll update this when the engine starts....
     
  4. tenndigger

    tenndigger LawnSite Member
    Posts: 54

    I think alot of our small engine problems can be cured with paying attention to two areas: quality fuel and proper maintenance. I work close to a lake so I have a couple gas stations that I can purchase non-ethanol fuel. Yes I do think the extra price justifies using this fuel esp in small engines. If a piece of equipment wont be used for a while I turn off the fuel supply and run the gas out of the carb. I do remove the fuel bowl on engines sometimes just to see what is in there. When my Hustler was spitting gas out the exhaust I found small gravels in the fuel bowl. I do use Seaform periodically in the gas tank also.
     
  5. nashguy207

    nashguy207 LawnSite Member
    Male, from Nashville,TN
    Posts: 117

    That reminds me of me. Sounds like something i would do. LOL
     
  6. danfu

    danfu LawnSite Member
    Posts: 57

    Okay, I have acquired a gasket for the cylinder head. The only question I have about that is...is it necessary to put a sealant on the gasket? I would think so...but in viewing a YouTube video they just put the gasket right on there with no sealant...sounds hokey to me..but I thought I would ask the guys that actually know...because...well...I trust you guys.
    Thanks.
     
  7. Patriot Services

    Patriot Services LawnSite Fanatic
    Posts: 12,441

    The only head gaskets that get a sealant are the 100% metal type (rare on small engines). The standard composite types do not.
    Posted via Mobile Device
     
  8. danfu

    danfu LawnSite Member
    Posts: 57

    Thank you very much!|
     
  9. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024


    Did you not go to Kohler's site and download the manual ???

    If you haven't you BEST do so......
     
  10. danfu

    danfu LawnSite Member
    Posts: 57

    Yes...I did. It says nothing about applying a sealant... However; it does say - NOTE: When installing cylinder heads, new screws should always be used. - I'm guessing that because putting the right amount of torque on old screws might cause them to break off.
    When they say 'screws' they are talking about what I would call 'bolts'...correct?
     

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