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Briggs 126t02-0521-b1 only runs with hand over intake on carb? Lots of suction .

On. A craftmen 24" snow blower , only 2 years old ,stays running with thumb over intake on carb ?

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Dirty carburetor . If it has a fuel cup on the bottom of carburetor take it off and clean it out real good Take fuel jet out and blow it out. If you don't have a compressor take a real fine wire and insert into the little hole in the jet and clean any dirt out. That is a good place to start cleaning. Quite often that is all you need.Be careful you don't loose any small parts and make sure the float is in place when you put back together. If the gasket is not seated right it will leak as well. If it has been sitting for a while dump the fuel tank and put clean fresh gas in it as well.

Posted on Dec 22, 2016


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A brand new snow blower ?? Who made it, single or two stage, 2 cycle or 4 cycle, Tecumseh or Briggs or China engine ??

Without knowing it's pretty hard to tell you if it's adjustable. Have you tried reading the manual ?? Did you try asking a dealer ??

Most newer machines do not have any adjustability as to fuel mixture. It's strictly an emissions issue. Many are so lean they won't run properly without being full warmed up before taking the choke off and some will still need a little choke to keep from surging. If you look on youtube you can see many cases of it. If you bought it new you can take it back and have them replace the carb and hope it's better. If you have some skills and are willing to buy miniature drill bits (I did) you can take the carb apart and gently drill out the brass main jet to get some more fuel in there. This is also a procedure you can find on youtube.

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Last year I purchased a Troy Bilt snow blower . I used it one time after using it I drained the gas out of it. Just recently I got it out and was checking it out because they were talking about snow so it...

I am curious why this repair was not covered under the warranty? This snow blower has a 2 year warranty from the manufacture.

Two things for you.
First, there has always been the "what came first, the chicken or the egg" issue over leaving fuel or draining the fuel from you snow blower. Half the experts say drain it, and the other half say leave it in.
Secondly, all of the current Cub Cadet, Craftsman, Troy-Bilt, Yard Machine, and Yardman snow blowers with the Powermore engine need to be treated differently than the old Techumseh or Briggs side-valve that you were used to.
The issue with your Powermore engine is actually today's ethanol fuel. If you leave the ethanol blends in your tank without a fuel stabilizer the alcohol separates from the gas. This alcohol then rises to the top of the tank and gets into the fuel lines. The fuel lines actually will soften. (I've seen the primer bulb actually melt on a few units)
If you drain the tank and run it dry the remaining fuel will "varnish" and/or dry out the carb.
I know a service manager that repairs a lot of these Powermore motors. Instead of replacing the carb, his techs actually take the carb off, soak it overnight in carb cleaner and then reinstall it. This is so common that he keeps a few clean carbs on the shelf and then just switches them out when a customer has a problem.
So how do you keep from getting those high repair bills? First, use fuel stabilizer ALL THE TIME! Mix Sta-Bil, Sea Foam, or Craftsman Fuel Stabilizer according to the directions on the bottle. Secondly, try not to use ethanol blended fuel. Especially try to fill the tank the last time you use it in the spring with non blended fuel. Third, When you put your snowblower away, fill it with stabilized fuel, start the motor and run it until warm. Then "fog" the carb with SeaFoam spray until it loads up and quits running. Put it away for the season. (If you don't know how to fog go to SeaFoam's website and read about doing this with the spray)
It will start next fall.
Feel free to ask me any other questions about your snow blower. Don't forget to rate this answer and you are welcome to leave a comment about it.

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