This comprehensive repair manual provides in-depth information for maintaining and repairing your 1990-1991 Kawasaki KX125 and KX250 2-stroke motorcycles. It covers all aspects of these machines, from routine maintenance procedures to complex engine rebuilds.

The manual includes detailed instructions and illustrations for every step of the repair process, making it easy to follow even for novice mechanics. You'll find detailed information on topics such as:

* **General Information:** Learn about the key features and specifications of your Kawasaki KX125 and KX250.
* **Routine Maintenance:** Master essential maintenance tasks, including oil changes, air filter cleaning, and chain adjustments.
* **Engine Removal and Installation:** Get step-by-step guidance on removing and reinstalling the engine, a crucial procedure for major repairs.
* **Fuel System:** Diagnose and resolve issues with fuel lines, carburetors, and fuel pumps.
* **Lubrication and Cooling System:** Understand the vital functions of lubrication and cooling systems and learn how to maintain them effectively.
* **Engine Specifications:** Access detailed specifications for the engine, transmission, and other components.
* **Transmission, Drive Chain & Sprockets:** Learn how to troubleshoot and repair your transmission, drive chain, and sprockets.
* **Steering System:** Understand the workings of your steering system and learn how to adjust and repair it.
* **Shocks:** Find detailed instructions on servicing and adjusting your shock absorbers.
* **Body Work:** Learn how to remove, repair, and reinstall body panels.
* **Intake & Exhaust:** Diagnose and resolve issues with the intake and exhaust systems.
* **Electrical System:** Troubleshoot and repair electrical components, including wiring, ignition systems, and lighting.
* **Advanced Troubleshooting:** Solve complex problems using the manual's comprehensive troubleshooting guides.

This repair manual is your ultimate resource for keeping your Kawasaki KX125 or KX250 in top condition.

The 1990-1991 Kawasaki KX125 and KX250 were highly sought-after motocross motorcycles that embodied the spirit of two-stroke racing during that era. These bikes were renowned for their lightweight, powerful, and agile handling characteristics, making them popular choices for both amateur and professional riders. The 1990 KX125 featured a liquid-cooled, single-cylinder, two-stroke engine with a displacement of 124cc, producing a respectable amount of horsepower for its class. Meanwhile, the KX250 boasted a larger 249cc engine, delivering even more power and torque for aggressive riding. Both bikes were equipped with a six-speed transmission, providing smooth and precise gear changes. The suspension was a key feature, with Kayaba forks and a Uni-Trak rear suspension offering excellent handling and comfort on rough terrain. The KX125 and KX250 featured a lightweight aluminum frame, contributing to their nimble and responsive handling. The sleek and aggressive styling of these bikes, with their vibrant green and black livery, further solidified their iconic status in motocross history.

Both the KX125 and KX250 were known for their performance and reliability, making them popular choices for serious riders. The 125cc model was renowned for its nimble handling and quick acceleration, making it an ideal bike for intermediate and advanced riders who enjoyed technical tracks. The 250cc version, on the other hand, was favored by experienced riders who sought raw power and a more forgiving nature on challenging terrain. These bikes were also relatively easy to maintain, thanks to their simple and robust design. Despite their age, these motorcycles remain highly sought after by collectors and enthusiasts who appreciate their historical significance and performance capabilities. The 1990-1991 Kawasaki KX125 and KX250 represent a golden era of two-stroke motocross, offering a thrilling and engaging riding experience that continues to inspire generations of riders.