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Discussion Starter #1
Hey guys,

I have an 02 Big Bear 400 that I changed the carburetor and the petcock. I started it and ran for about 5 minutes. It stop so I checked the spark plug and it was black. I changed it and it ran for another 5 minutes then it would not start again. I looked at the spark plug again and it was black so I changed it again and got the same results. Is there something I’m missing what would cause the spark plug to not spark.
 

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Welcome from Colorado.
Too much gas is the problem.
 

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The old carb had the right jettting, the new on maybe not. Why the new carb...and is it o.e.m. or chinese quality? Same jets as the old one?
 

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Discussion Starter #5
Thanks for responding. I had to get a new carb because I broke the spring on the original one taking it off. I bought the new carb off of amazon and it said it was OEM
 

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If its the same part #, try switching the jets.
 
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