The break is right at the spin weld. If you were only at 6,500 I suspect a bad weld. There's enough carbon to indicate a rich to normal burn. A defective valve is possible. Or the valve hung and got tagged.
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2008 Eagle Milano 150- 9,679 miles
2009 Honda Rebel 250- 10,434 miles
2009 CF Moto Fashion- 16,023 miles
2009 MC-114 50cc Cub Clone- 4,317 miles
twowheeler.yolasite.com/
That's 30,049 China Scootin miles and Counting.
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