20 Most Recent Kymco 2007 MXU 250 Questions & Answers


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This forum is about the no start problem.

Make sure the battery is fully charged and the cables tight and the shifter in N.

ATVs | Answered 10 hours ago


It sounds like a vacuum leak. The intake manifold on Polaris ATV's are prone to cracking do mainly from worn rubber bushings on the carb, support mount. They are vibration dampers that wear out leaving only the intake manifold support, thus cracking it.
Further, the rubber boot connecting the air cleaner box to the carb deteriorate and deposit's that material to the inside of your carb., giving you additional problems. Be sure to replace both items and have your carb sonic cleaned at your local small engine repair shop.

ATVs | Answered Yesterday


What about the spark plug wires, perhaps they are done.

ATVs | Answered 2 days ago


perhaps under seat on tag attached to frame

ATVs | Answered on Apr 19, 2019


Sounds like an electrical problem. Make sure that the battery is good and the connections tight. Also check the circuit breakers. If they are weak and over heat they will cut the power and when they cool off, all is well.

ATVs | Answered on Apr 18, 2019


could be as simple as the plug caps or maybe coils are old and crusty by now. you really should get a service manual for it for easier troubleshooting. i do not suggest reliable store. factory is the best

ATVs | Answered on Apr 18, 2019


Could be a weak spark, since a weak spark will break down under load conditions. Pull the spark plug and make sure their is a fat purple spark. It could also be an air leak between the carb and the intake manifold causing a very weak gas to air ratio, running too lean.

ATVs | Answered on Apr 16, 2019


Adjust your idle speed up a bit. There will be a small adjustment screw on the carburetor, turn it clockwise a bit until the idle speed is good. If that does not work you could have a plugged idle circuit passage.

ATVs | Answered on Apr 16, 2019

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