Question about Troy Bilt, Tuffy, Rear - Tine Tiller, 4.0 Tecumseh Engine

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Tecumseh 2 cycle snowblower

My 2 cycle snowblower starts but doesn't stay running. There is good gas in it. I change the inlet needle and seat and still does the same thing. I check all gas lines and they are clean. When I push the primer it sounds like air is coming out of the carbuter. The engine number is HSK850-8310C

Thanks
Joey

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I know this may sound stupid but I've don it my self is the gas on? If it is then my next ? is, does the nut on the bottom of the bowl have an adjustment screw in it? If it does see if it is turned in all the way, if it's turned in than from just bottom out turn it out 1 1/4 turns out that is the fuel flow needle once running that needle may need to be fine tuned,also if it is turned out to far it wont run either cause it will flood out. If that doesn't work it might be something internal with the carb.let me know how you make out and if we need to check into it further.

Posted on Dec 27, 2008

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Many small engine problems such as you described are fuel related. In today's world, most of our gasolines are blended with ethanol and thus gasoline shelf life has been reduced to 4-6 months. It is important that after each season's use you be certain to run the snowblower until all gasoline in the tank and carburetor have been used - effectively running the snowblower out of gas. If you did't do that last season the "old" gasoline in the carburetor has began to gum up and will not let the carburetor mix fuel and air properly. The solution will be to remove, disassemble and clean the carburetor. It is likely the gas tank will also need to be drained, removed, and cleaned. If you are unable to do this you will need to take to a qualified small engine mechanic in your area.

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make sure you cleaned the main jet and low speed jet good and make sure your needle and seat are in good condition some time the seats swell up do to bad gas. there for no gas gets through the seat and make sure your gas is clean w no water, if this isnt a needle and seat carb use regular wire and clean it good.

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First of all check all your fuel lines from your tank to your carb for cracks, with the carb it is common on these to leak past the needle and seat in the carb, I would remove the float and try clean up the needle and seat first, then if that doesnt work you should be able to purchase the needle and seat as a spare part and not have to replace the whole carb...

Most times this problem can be rectified with a quick clean up of the needle and seat as there could be some forign matter or debris under it, be sure to reset the float level/seat turn the carb upside down a check that the float is sitting level or parallell with the carb body...

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