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WHAT NEXT ?

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Bike - 2000 WR 400 - stock except for air box snorkle removed and baffle removed. The bike runs good but has a flat spot off idle and will even stall if the throttle is chopped really hard. What do you guys think we should start with - adjusting fuel screw - if so, how many turns out? Or is the P-38 the answer. Any other ideas?? NEED HELP - thanks DAN

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P38 is NOT the answer.

Correct jetting is.

You should disconnect your air cut valve, then proceed to tweak on your pilot (fuel) screw.

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Whats a AIR CUT VALVE? Where is it and how do I disconnect it? Is the stock jetting the way to go? If not what? Thanks Dan

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