Carb adjustment help

[Race3119]

2007 k9 with 117 S and S. Every now and then when taking off from a dead stop it has a little stumble. Occasionally when riding, if you roll out of the throttle then get back in it..there is a hesitation. Any ideas on what needs adjusting on the carb?

 

[Mr. Wright]

Dropbox

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[Mikeinjersey]

2007 k9 with 117 S and S. Every now and then when taking off from a dead stop it has a little stumble. Occasionally when riding, if you roll out of the throttle then get back in it..there is a hesitation. Any ideas on what needs adjusting on the carb?

Welcome from NJ,
Your problem is more likely a dirty carburetor rather than an adjustment. Think of it as a supply and demand issue. The carb is probably not giving enough fuel when it's required during acceleration . The pump and/or jets could be a little clogged. Drop the bowl, being careful not to loose the ejector nozzle o-ring, and clean it out along with the jets. Reassemble remembering to put the o-ring back and see what happens. Hopefully it will run well. While your in there document the jet sizes in case you ever need that info in the future.
There is a small rubber cap worth checking on the top of the carb that can crack and give you a vacuum leak which can cause issues as well.
If it doesn't improve these are the adjustment procedures from S&S

 

[Race3119]

Thanks for the help

 

[SCC007]

There are some good videos on YouTube by s&s for setting the carb back to stock and then tuning it. I recommend that if you don't have history with with the bike.

 

[Race3119]

Yeah, I'm not sure how its currently setup

 

[gordon]

I would look at the acceleration pump it is a little rubber bellows and methanol in the gas eats them up