'''++@kempma++''' you are not giving us a lot of info. Let us know what you have checked. Thing like do s your engine get fuel, spark, air, and what you have tried. Make sure that you check your timing etc. since that would be my main concern. It might also help if you download the SM from places [https://www.manualslib.com/download/796490/Kawasaki-Mule-610-4-4.html|like this]