1990 Kawasaki KDX 125SR Motorcycle Service Manual
Your 1990 KDX 125SR troubleshooting and repair guide. Covers engine, fuel system, cooling, lubrication, transmission, and wheels/tires. 50071-1223
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Sample pages from the 1990 Kawasaki KDX 125SR Motorcycle Service Manual manual
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Kawasaki Models Covered & Key Technical Specifications
Models: Kawasaki KDX 125SR Sub-models / Variants: KDX125-A1, KDX125-B1, U.K. Model, French Model, Greek Model, Italian Model, Norwegian Model, Swiss Model, South African Model, Swedish Model, West German Model Build Years: 1990 Technical Data:
- Engine type: 2-stroke, single cylinder, crankcase reed valve
- Engine displacement: 124 mL
- Cooling system: Liquid-cooled
- Bore and stroke: 56.0 x 50.6 mm
- Compression ratio: 8.0:1
- Transmission: 6-speed, constant mesh, return shift
- Primary reduction system: Gear
- Clutch type: Wet, multi disc
- Fuel tank capacity: 9.0 L
- Spark plug: NGK BR8ES
- Battery: 12 V 3 Ah
Kawasaki Manual Features & Content Preview
1990 Kawasaki KDX 125SR Technical Reference
- Covers 1990 Kawasaki KDX 125SR motorcycles including A1 and B1 variants across international market specifications
- Original OEM publication, first edition dated April 30, 1990
- Contains 47 exploded-view diagrams, 12 torque specification tables, and 2 complete electrical routing schematics
- Delivered as a direct download the moment payment clears
- Permanent availability in your purchase account — no re-buy required
- OCR text layer lets you jump to a torque spec by keyword
- Laid out for standard letter and A4 printing
- This first edition is the primary reference for the 124 mL liquid-cooled KDX 125SR production launch build
Documentation Scope and Organization
The 1990 Kawasaki KDX 125SR service manual provides comprehensive technical guidance for the complete maintenance and overhaul of the 124 mL engine and chassis. It segments the motorcycle into core system chapters, detailing the fuel delivery, liquid-cooled cooling system, engine top-end, bottom-end transmission, and final drive components. Chapters also document the steering, suspension, frame geometry, and electrical equipment, with each section featuring what an OEM service publication covers to facilitate accurate diagnostic and reassembly work.
Specification Highlights
Technical data within the publication includes specific reference values for engine assembly and cycle maintenance. Cylinder head bolt torque is specified at 25 N-m in the engine data section. The coolant system capacity for the KDX 125SR is documented at 1.1 L. Primary gear nut torque is explicitly set at 59 N-m as documented in the transmission data table.
Reference only — always consult a certified technician before performing service on this equipment.
An official 1990 Kawasaki Heavy Industries motorcycle service manual for the KDX 125SR, documenting engine, drivetrain, cooling, and electrical specifications for the A1 and B1 variant production series.
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