Question about 2000 Yamaha YZF-R6

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Turned knob to let more gas and/or air in now it cuts out bad

I was using the knob on the side of the bike to get it to idle at a lower rpm, now it cuts out bad in 1st gear. What do I have to do to fix this, I tried turning the knob the other way but it did not work.

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Drain the carburetors. There should be a screw on the lower side of each carb float bowl. Remove the screw then replace it after the fuel drains. Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? Drain a cup of gas from the tank. Is there any water or trash in the cup? Dump it, clean it and re-mount it, (not all bikes have a water trap bowl). Install a fresh set of stock NGK spark plugs. Turn the gas back on and wait a minute for the carbs to fill with gas. If the bike doesn't start and run properly then shut off the gas and remove the carburetors from the engine.

FOR EACH
carb > Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the idle screw and the air screw on the outside throat of the carb and spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two adjusters down. Only screw these in until they LIGHTLY seat. Now turn each adjuster one and one half turns outward. Put the rest of the
carb back together, clean the air filter and install the carb. Before putting the slides back in the throat of the carbs, Install an in-line fuel filter. Let the float bowl fill then start the engine. This process should get you back on the road.

Also, sync the carbs such that the slides on the carbs move at the same exact instant when the gas is slowly increased from idle speed.

Please rate this solution. Thanks!

Posted on Apr 28, 2009

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