1990 Kawasaki KDX 125SR Motorcycle Service Manual (P/N 50071-1223)

• Original Kawasaki Heavy Industries OEM publication (P/N 50071-1223), first edition dated April 30, 1990
• Primary reference data for the 124 mL liquid-cooled production launch
• Covers A1 and B1 variant production series across all international market specifications
• Features 47 exploded-view diagrams, 12 torque specification tables, and two complete electrical routing schematics

Documentation and System Organization

This OEM publication breaks down the 1990 Kawasaki KDX 125SR into core system chapters. You get detailed component views for the engine, chassis, and fuel delivery networks. It maps out the complete liquid-cooled thermal management system alongside the top-end, bottom-end transmission, and final drive. Mechanics will find exact routing diagrams for steering, suspension setups, and frame geometry. The electrical equipment is fully detailed to facilitate accurate diagnostic and reassembly work. Keep in mind that working on motorcycles involves inherent risks; always consult a certified technician before applying these factory specifications to active machinery to ensure proper workshop safety.

Specification Highlights

The reference manual provides precise values for tear-downs and cycle maintenance. For example, the engine data section sets the cylinder head bolt torque strictly at 25 N-m. Coolant system capacity is documented at exactly 1.1 L. Moving to the lower end, the transmission data tables mandate a 59 N-m torque for the primary gear nut. These raw technical parameters allow professionals to verify exact factory assembly clearances.