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Re: NAA Running rough after 1 hour

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02-03-2013 11:10:17

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When was the last time you serviced the air cleaner?? Next check spark when it acts up as in the spark need to jump a 1/4 inch gap or more. Also check the coil and see if it is so hot you can not touch it if it is you may have a bad coil yes I know it is new so what can still be bad

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02-03-2013 11:43:51

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 Re: NAA Running rough after 1 hour in reply to old, 02-03-2013 11:10:17  
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Old, Don't you think it would be the other way around and not enough fuel since I have to close off the choke 1/3? Tells me I have good spark and not enough fuel or too much air? Am I thinking wrong or over thinking this?

Maybe the float set too low in the carburetor? Thinking outside my box.

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02-03-2013 16:37:32

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 Re: NAA Running rough after 1 hour in reply to KrisNMo, 02-03-2013 11:43:51  

Get rid of the pre-bent fuel line, it sounds like it is vapor locking. Get a piece of brake line, and go straight to the carburetor, (no fancy turns or curves)where it can heat up. This should fix your problem, I had the same problem with my 600 series.

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02-03-2013 12:30:01

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 Re: NAA Running rough after 1 hour in reply to KrisNMo, 02-03-2013 11:43:51  
Weak of poor spark will look like a fuel problem and the hour says coil is heating up or some other thing in the ignition system. Or if the air cleaner is empty as in no oil then after a while it may stave for fuel due to lack of restriction that the air cleaner will give

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