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Re: 641 Dying Under Load

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Zack Methvin

05-13-2013 08:23:23

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when you hit a area of more load.. like thick grass. does the gov open the throttle butterfly some or no? Mostly when i'm going uphill

when dieing.. has the throttle lever slipepd down any? no, the throttle rod never moves.

does tugging on choke help any? Yes, i have to run the choke half open to make it run smooth.

will it immediately restart.. or need time before restart? most of the time it will restart

have you checked spark before start and at moment of stall? no, haven't checked the spark yet.

checked fuel flow at/thru carb at stall? no, how would this be accomplished? It bogs only while i'm driving it.

noticed any water or fine debris in sediment bulb? No, the fuel and bowl is always clean.

Thanks for the help.

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05-13-2013 11:06:03

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 Re: 641 Dying Under Load in reply to Zack Methvin, 05-13-2013 08:23:23  
As sound says check spark and make sure it is a good blue/white and will jump a 1/4 inch gap or more. Then check fuel flow by pulling the carb drain plug and let it flow for a few minutes. Catch it so as to look for dirt etc. If choking it helps you might try opening up the main jet a little bit till you find the sweet spot

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05-13-2013 08:50:57

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 Re: 641 Dying Under Load in reply to Zack Methvin, 05-13-2013 08:23:23  
if you have not checked spark.. you are getting ahead of yourself.

check spark.

checking fuel to carb and thru cab is easy. you will need to remove the fuel line to the bowl. heck.. i pull the banjo bolt too to mke sure it is open.

carb bowl has a drain as well.

you might be getting tank vacume as well...

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