Is a shut off on the gas line the only solution

infinitymike Posted By infinitymike, Jun 10, 2013 at 10:40 PM

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  1. infinitymike

    infinitymike
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    I have a Toro 16hp riding lawnmower.
    I am getting gasoline in the oil.
    I pulled the carb and cleaned it out thinking the float wasn't seating right.
    But that didn't fix it.
    I put an inline shut off valve.
    But since I suffer from CRS, when I went to cut the lawn this weekend I found I didn't shut it off.<>
    I checked the oil and yep it was full of gas.
    When I drained it, it filled a 2 liter soda bottle.!!!
    What else can I do?
     
  2. NH_Wood

    NH_Wood
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    Perhaps the needle and seat should be replaced in the carb - float might be fine, but needle/seat might be damaged. Cheers!
     
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  3. bogydave

    bogydave
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    +1
     
  4. MasterMech

    MasterMech
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    Bingo.
     
  5. infinitymike

    infinitymike
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    At the risk of sounding stupid. Whoops to late!
    Does the needle just unscrew? Or is it part of the casting?
     
  6. gzecc

    gzecc
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    The needle is free and balanced by the (float) level of fuel in the carb bowls. It opens and closes on to the seat to allow fuel to fill or shut it off.
     
  7. NH_Wood

    NH_Wood
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    Advance to about 5:45 on this vid and watch the rest (it's part of a two part vid on rebuilding a similar carb as your Toro - might be worth watching the whole 2 part series). Cheers!

     
  8. Highbeam

    Highbeam
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    Common issue. You've got crap or a flaw in the interface between needle and seat. The needle often has a rubber sealing surface.

    A fuel shutoff works though.
     
  9. infinitymike

    infinitymike
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    Thanks for the insight.

    I'll report back
     
  10. infinitymike

    infinitymike
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    New needle, new seat, same problem.:confused:

    Maybe the casting the seat sits against is warped or deformed?
    Its a 2002 is it time for a new carb??
     
  11. kopeck

    kopeck
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    What kind of float does it have?

    If a new needle doesn't do it and the seat looks OK you could have a bad float or it could be not adjusted correctly. A new carb would be last resort.

    K
     
  12. MasterMech

    MasterMech
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    I am assuming this is a Briggs 16HP single cylinder on the Toro?

    Shake the float, can you feel/hear fuel sloshing around inside?

    Make sure the fuel line isn't rotting away inside and dropping debris into the carb. Generally if I'm rebuilding/replacing a carb, it gets a new line and filter as well.
     
  13. smokinj

    smokinj
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    My cub is doing this. I have a carb rebuild kit on the way.
     
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