The seat can also be a problem. If you want to fix it, then clean the seat and replace the valve, then check the fuel level in the bowl. Fill the carburetor with fuel and attach a hose as shown. Open the drain screw and observe the fuel level in the hose. 2. Tom's e-mail: contact@souperdoo.com. My friend is getting some work on her 2006 Ninja 250 and was wondering what the normal going rate is for the following, the prices in parantheses are quotes a mechanic gave her: Cleaning carbs: ($150) Adjusting valves: ($90) Removing wheel, mounting tire, balancing, etcc: ($45/wheel) Fork alignment: ($30) Find helpful customer reviews and review ratings for MOTOKU Carburetor for Kawasaki Ninja 250R 1988-2007 at Amazon.com. Read honest and unbiased product reviews from our users. 785 posts · Joined 2007. #2 · Jul 9, 2007. Update: Per the recommendations on Ninja250.org, I drained the carburetor float bowls. The gas had turned a yellowish/amber color, so I figured that it couldn't have hurt. When I tried starting the bike, it turned over for about five seconds and then suddenly hit 7k RPM. Posted March 30, 2021. Sounds lean, really lean. Since you have a new carb check that the air screw is somewhere between 1 and 2 turns out and the needle is middle position as a baseline. I recently rebuilt an old yamaha carb with a generic rebuild kit and it ran worse afterwards. It turned out that the old needle (which I did not swap) was not POSFLAG 2 Sets Carburetor Rebuild Repair Kit for 1988-2002 Kawasaki EX250, Kawasaki EX250F, Kawasaki EX250J, Kawasaki Ninja 250, 250R AHL Motorcycle Carburetor Repair Kit for Kawasaki Ninja 250R EX250J SE 2012/Ninja 250R EX250J 2008-2011/Ninja 250R EX250F 1988-2007/Ninja 500 EX500D 1994-1996/Ninja 500 EX500A 1987-1993 PWK 38mm Carburetor For Keihin Flat Slide Air Striker Carburetorpwk 38mm carburetor 250 250SX 250EXC Dirt Bike Honda ATV TRX250R CR250 ATC250R SUZUKI LT250 by Jondinver (PWK38) April 28, 2022 XLH883 Motorcycle Carburetor Main Jet, 7mm Round Head N424-27 main Injector nozzle, Compatible with Keihin carburetor SPORTSTER 883 CVH (CV40 27421-99C carb leaking gas. so my 250 bayou has been sitting for about 24 hrs and theres gas dripping out of the carb hose that comes out of the bottom of the bowl. it is the hose that is the farthest back, i think (there are 2). when i shake the quad, more gas comes drippin out, almost a stream. i had to back the a/f screw out much farther than normal Taklj.