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Whats the proper way of adjusting the pilot fuel/air scews on these duel carbs? I've read where they should be both the same as well as the right should stay a 2 out and adjust the left only. How do you adjust the screw?
 

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I put them at the same level, but I have seen people running them offset by 1/2 turn (right 1/2 turn richer) without any problems.
 

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Master of the Electron
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At low RPM, there's not much difference in flow between the left and right intakes, so equal is fine...

Just assume that something like 1.5 Left / 2.5 Right is equivalent to 2 in both... it averages out.
 

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Can any of you guys recommend a good youtube video to explain everything you are talking about? I search and there is so many and most of them just suck! I am a visual person...thank you.
 

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Need Help!!

I have a full FMF exhaust and a K&N air filter, and a dyno jet jetting kit sitting around for my 2005 raptor 660. If possible, can i get any recommendations to start the jetting for optimized performance please!
 

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Master of the Electron
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If your airbox is open at all:

DJ 146 L / 148 R mains, 25 pilots, DJ needles 1 notch rich of center, fuel screws around 2.5 turns out.

Welcome to the forum!
 

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Is there a jetting chart out there for elevation? I just picked up a 03 660 and have run it around at 5000 ft. It runs great and has all the power that I want. I will be taking it to a riding area that has elevations between 8000 to 10000 feet. The bike is totally stock with stock jets. I just want to make sure I have it jetted right to run at the higher elevations.
 
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