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Is a shut off on the gas line the only solution

Post in 'The Gear' started by infinitymike, Jun 10, 2013.

  1. infinitymike

    infinitymike Minister of Fire

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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?

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  2. NH_Wood

    NH_Wood Minister of Fire

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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!
    smokinj likes this.
  3. bogydave

    bogydave Minister of Fire

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    +1
  4. MasterMech

    MasterMech Guest

    Bingo.
  5. infinitymike

    infinitymike Minister of Fire

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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 Minister of Fire

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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 Minister of Fire

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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 Minister of Fire

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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 Minister of Fire

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    Thanks for the insight.

    I'll report back
  10. infinitymike

    infinitymike Minister of Fire

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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 Minister of Fire

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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 Guest

    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 Minister of Fire

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

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