GX 345 carb issues
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    E.J.H's Avatar
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    Unhappy GX 345 carb issues

    My dad has a gx 345. And the other day we were mowing with it and it was just dumping gas on the ground. So i looked and it has a ?? vent hose on the carb that was leaking. any suggestions very much appreciated. im sorry if i did not explain well enough.Click image for larger version. 

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ID:	401650 the little black hose on the right.
    Last edited by E.J.H; 07-01-2017 at 04:42 PM.
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    You may have trash in the needle and seat. When the bowl is full of gas the float should close the needle stopping the flow of gas.I would take the carb off and clean it real good.

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    E.J.H's Avatar
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    I have cleaned the carb once but did not focus on the needle and seat. but that is definitly an option ------- Thanks Keefus!!!!!
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    The float also has an adjustment. It works just like a standard toilet. As the fuel bowl fills up it closes the needle and seat. It's usually adjusted by bending the little metal tab that hooks onto the needle. Also make sure that the little rubber tip is in good shape.
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    Quote Originally Posted by H-D dealer dude View Post
    The float also has an adjustment. It works just like a standard toilet. As the fuel bowl fills up it closes the needle and seat. It's usually adjusted by bending the little metal tab that hooks onto the needle. Also make sure that the little rubber tip is in good shape.
    Yes, but it's also important to know where it closes. If the file bowl has too much or too little fuel in it, that will greatly effect how the engine runs. Usually the float wants to be level with the float bowl mounting surface when held upside down.
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    E.J.H's Avatar
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    The gx 345 ran fine when it was squirting gas but i then took the carb off and cleaned it and it started to surge (just air i presume)
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    Quote Originally Posted by E.J.H View Post
    The gx 345 ran fine when it was squirting gas but i then took the carb off and cleaned it and it started to surge (just air i presume)
    Is that all that you did?
    Touch any of the adjustments?
    Is it still leaking gas?
    Put the linkage back on exactly like it was?
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    JD 10P cart.
    JD JS61 RWD walk behind mower.
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    E.J.H's Avatar
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    leaking some but not near as bad. i did not mess with adjustments. i put it back like it was.
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    1987 John Deere 318 46" deck 54" 2-way blade ---- SOLD
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    Quote Originally Posted by E.J.H View Post
    leaking some but not near as bad. i did not mess with adjustments. i put it back like it was.

    What did the needle and seat look like? Any corrosion? Rubber tip in good shape? If it looked good I'd try adjusting the float a little lower.

    Did you reuse the gaskets? Could you possibly have a vacuum leak? Spray a little carb cleaner on the outside of the carb & intake manifold. See if it changes the engine speed.
    keefus and E.J.H like this.
    2014 X540 with HDAP tires, 54" deck, brush guard, arm rests and cargo bag.
    JD 48" plow with angle from seat kit & heavy duty skid shoes.
    4 suitcase weights and chains.
    JD tow behind spreader.
    JD 42" lawn sweeper.
    JD 10P cart.
    JD JS61 RWD walk behind mower.
    Stihl KM110 power head with pole saw, shaft extension, power scythe, curved shaft edger, 2 straight shaft cutters (string & blade).
    Stihl MS180-CBE 16" saw.
    Stihl SH86C hand held blower vac.

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    E.J.H's Avatar
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    Quote Originally Posted by H-D dealer dude View Post
    The float also has an adjustment. It works just like a standard toilet. As the fuel bowl fills up it closes the needle and seat. It's usually adjusted by bending the little metal tab that hooks onto the needle. Also make sure that the little rubber tip is in good shape.
    There is no metal tab but there is a plastic one. tip is very good. i am not real worried about the surging issue yet. Thanks
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    1987 John Deere 318 46" deck 54" 2-way blade ---- SOLD
    1958 John Deere 420U project
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    Except a man be born again,he can not see the Kingdom of God....

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