Kymco mxer 150 quad my quad keeps cutting out after about 10mins when slowing down mostly but starts straight away again then will cut out after a few mins its had a service and tappets checked and carb cleaned but still happening does anybody have any ideas many thanks

Question edited for clarity.
Question moved to model category.

no spark.

KymcoForum.com https://www.kymcoforum.com > ...
Jan 10, 2015 - Try un-plugging the rectifier, and see if you get spark. It may be shorting the stator to ground. Also try clipping the black, and yellow ...

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No Spark At Spark Plug - KYMCO MXU 150 Service Manual

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KYMCO MXU 150 Manual Online: No Spark At Spark Plug. Inspection/Adjustment ... Check ignition coil with. a CDI unit tester. 1-37. Symptom. Weak or no spark. Not ...

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KYMCO SERVICE MANUAL

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Jun 8, 2005 - No power. Intermittent power. • Dead battery. • Loose battery cable ... LIGHTS/ SWITCHES. 17-6. ATV 150/125. MXU 150: INSPECTION. Disconnect the ...
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Visit the on-line store, know as https://www.heavy-equipmentmanual.com/, they have the repair manuals. I'm sure you will get the solution of your problem.

Because Kymco products are junk.

does it idle up and down at will,,,, and gets worse when hot? (if yes - the valves are too tight!!) maybe a little hard to start...??

The carb may need a professional cleaning!

If you can reach both positions, use a screw clamp to tightne the areas

Thanks Terry

broken throwout clutch springs?

Sounds like something electrical is getting wet. in your shop , or driveway , start quad and run up till it's warm. Then take a spray bottle and spray all electrical connections starting from the bottom and work your way to the top. theres lots of connections on these quads. It's going to take some tome unless you get it to duplicate what it does on the trail. When you find the culprit use Dielectric silicone to water proof the connectors . Good luck . thats about the only way to go about this reapair , it takes patiance and time

Hi Matt only help I can give is look along top & bottom of chain for a tensioner it will be a round rubber wheel. If you cant find a tensioner it will more than likely you need to cut the chain down. If your not sure how to let me know & i'll let you know how. Also DO NOT USE IT while chain is loose as if you do & chain comes off you can crack engine case which then means a new engine

I have seen this problem with a bad coil or cdi.

theres a little green wire that goes to the clutch cut it and ground it out and it will go in to gear i had the same problem