This comprehensive repair manual provides detailed instructions and technical specifications for maintaining and repairing your 1990-1991 Kawasaki KX125 and KX250 2-stroke motorcycles. Covering all aspects of these machines, from routine maintenance to advanced troubleshooting, this manual is a valuable resource for both novice and experienced mechanics. It includes detailed information on general information, routine maintenance, engine removal and installation, fuel system, lubrication and cooling system, engine specifications, transmission, drive chain & sprockets, steering system, shocks, bodywork, intake & exhaust, electrical system, and advanced troubleshooting. With its comprehensive coverage and clear illustrations, this manual will empower you to tackle any repair with confidence.

The 1990-1991 Kawasaki KX125 and KX250 were iconic 2-stroke motocross machines that left a lasting mark on the racing scene. These motorcycles were renowned for their nimble handling, potent engines, and aggressive styling, making them favorites among both amateur and professional riders. The KX125, boasting a 124cc liquid-cooled 2-stroke engine, was a lightweight and agile competitor in the 125cc class. Its powerful engine, coupled with its responsive handling, allowed riders to carve through tight corners and maintain speed on challenging tracks. The larger KX250, powered by a 249cc 2-stroke engine, offered a more potent punch, making it a formidable opponent in the 250cc class. Both models featured a rigid steel frame, adjustable suspension, and powerful brakes, providing riders with the confidence to push their limits.

The 1990-1991 KX models were notable for their distinctive design, which featured sharp lines and a low-slung profile. The iconic Kawasaki green and black color scheme, complemented by white graphics, further enhanced their aggressive stance. The KX125 and KX250 were also equipped with advanced features for their time, including a hydraulically actuated clutch, a responsive throttle, and a wide-ratio transmission. These elements contributed to their exceptional performance, making them popular choices among competitive riders. The 1990-1991 KX series, with their powerful engines, nimble handling, and stylish design, marked a significant chapter in Kawasaki's off-road motorcycle legacy, leaving an enduring impression on the motocross world.