Question about Factory bike Chrono SM 250 Motorcycles

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My sons 50cc quad wont run properly, it has a auto choke and wot run unless i keep my hand over the air hole

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  • Brian May 11, 2010

    when was the last time it was started and ran good if it sat more than 3 months with out being started it gong to need a carb clean before runs good.

  • clive pearson
    clive pearson May 11, 2010

    Hi i am Vortash .. Check for a bad seal at the joint on the carb to cylinder head manifold gasket ( allowing air leak ) check your ,air filter and make sure the petrol filter is clear regards Vortash

  • Murtaza Akberali  Versi
    Murtaza Akberali Versi May 11, 2010

    Do you mean to say that it doesnt run at all unless you block tht hole? (air hole) or does it run unevenly or rather roughly the engine,

    is this air hole where the air filter is fitted?

  • tim winter May 11, 2010

    does it run after it's warmed up ?



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The carb jets are clogged and in need of cleaning,when the jet clog,the engine doesn't provide enough suction to pull the gas through the clog,When you cover the breather hole,you force all of the suction from the piston's decompression stroke to the carb which allows it to **** the gas.

So to make a long story short.The carbs internal parts need cleaning.

Please take time to rate this fixya

Posted on May 15, 2009


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Please rate this solution. Thanks!

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