🏷️ Basic Information

Make:

Kawasaki

Model:

KMX 125

Model Code:

Likely KMX125-A

Product Name:

Kawasaki KMX 125 1986 1987 1988 1989 1990 Service Repair Manual

Generation:

First Generation (KMX125-A)

Chassis Codes:

KMX125-A1, KMX125-A2, KMX125-A3, KMX125-A4, KMX125-A5 (based on model years)

Engine Codes:

Likely B1 (specific engine code may be detailed within the manual)

👋 Introduction

Segment:

Lightweight Dual-Sport / Enduro Motorcycle

Target Audience:

Enthusiasts, DIY mechanics, professional motorcycle technicians working on this specific model.

Competitors:

Honda CRM125R, Yamaha DT125R, Suzuki TS125R (during its production era).

Vehicle Focus:

Off-road capability, lightweight design, user-friendly maintenance, reliable two-stroke performance.

Manual Advantage:

Comprehensive, detailed, and easy-to-understand guide for repairs and maintenance, empowering owners and technicians.

📋 Manual Details

Vehicle Years:

1986, 1987, 1988, 1989, 1990

Geographic Coverage:

Global (assumed, as no specific regional restrictions mentioned)

Page Count:

199

Manual Type:

Workshop Service Repair Manual

Language:

English

File Format:

PDF

Delivery Method:

Instant Download

Printability:

Yes

Software Requirement:

Adobe Reader

Operating System Compatibility:

Windows, Mac, Linux

📖 Manual Coverage

Engine:

Engine disassembly, assembly, inspection, repair, tuning, lubrication, cooling system, fuel system (carburetor specifics), ignition system (CDI), exhaust system.

Transmission:

Gearbox inspection, repair, clutch operation and adjustment, shift mechanism.

Chassis:

Frame inspection and repair, suspension (forks, shock absorber), steering system, wheels, hubs, spokes, braking system (front and rear drums), chain drive.

Electrical:

Wiring diagram, lighting system, charging system (generator, battery), ignition system components, switches, instrumentation.

Bodywork:

Fairings, fenders, seat, fuel tank, graphics and decals.

Procedures:

Routine maintenance, adjustments, troubleshooting, component removal and installation, disassembly and assembly, rebuilds, diagnostic procedures, electrical system diagnostics.

Special Tools:

Identification and usage of specific Kawasaki service tools.

Depth:

Comprehensive, step-by-step procedures with detailed explanations, including service data, precautions, and factory specifications.

Illustrations:

Pictorial diagrams, exploded diagrams, drawings, and photos to guide repair procedures.

Data:

Service data, specifications, wear limits, tightening torques, and allowable limits for various components.

📊 Manual Specifications

PDF Quality:

High-resolution, printable pages.

Print Recommendation:

Recommended for professional printing for best clarity of diagrams and text.

Binding Type:

Digital (PDF) - No physical binding.

Paper Type:

N/A (Digital format).

Completeness Statement:

100% Complete and Intact, no missing/corrupt pages/sections.

⚙️ Engine Specifications

Engine Type:

2-stroke, liquid-cooled, single-cylinder

Displacement:

124 cc (approximate, specific figures would be in the manual)

Bore X Stroke:

Typically around 56.0 x 50.6 mm (specifics in manual)

Compression Ratio:

Typically in the range of 7.0:1 to 7.5:1 (specifics in manual)

Valvetrain:

Reed valve induction (standard for 2-stroke)

Ignition System:

CDI (Capacitor Discharge Ignition)

Horsepower:

Approximately 17-19 HP at around 8000 RPM (figures can vary by region and specific model year, manual will confirm).

Torque:

Not prominently advertised, but around 1.5-1.7 kg-m at ~7500 RPM (manual will provide specifics).

Carburetor Type:

Mikuni VM series (likely VM28SS or similar, specifics in manual)

Fuel Type:

Unleaded gasoline with 2-stroke oil mixture (pre-mix or oil injection system details in manual).

Oil System:

Likely Automatic Oil Injection (Kawasaki's KIPS system often integrated with engine controls).

🔧 Transmission

Transmission Type:

6-speed constant mesh

Clutch Type:

Wet, multi-disc

Kawasaki Kips:

Kawasaki Integrated Powervalve System (KIPS) for improved powerband and exhaust gas scavenging. Manual details its function and maintenance.

📐 Dimensions

Length:

Approx. 2140 mm (specifics in manual)

Width:

Approx. 805 mm (specifics in manual)

Height:

Approx. 1245 mm (specifics in manual)

Wheelbase:

Approx. 1425 mm (specifics in manual)

Dry Weight:

Approx. 122 kg (specifics in manual)

Wet Weight:

Approx. 130 kg (with fluids, specifics in manual)

Fuel Capacity:

Approx. 10.5 Liters (specifics in manual)

Oil Capacity:

Approx. 0.5 Liters (2-stroke oil reservoir, specifics in manual)

🛡️ Safety Features

Safety Standards:

Complies with applicable safety standards of the era for motorcycles.

Braking System:

Front: Drum brake; Rear: Drum brake. Manual provides adjustment and maintenance for both.

Suspension:

Front: Telescopic fork with adjustable preload; Rear: Monoshock with adjustable preload. Manual covers fork oil levels, seal replacement, and shock absorber servicing.

Lighting:

Headlight, taillight, brake light, turn signals (depending on market). Manual includes wiring and bulb replacement.

💡 Technology Features

Instrumentation:

Analog speedometer, odometer, tachometer (may vary by market). Simple, functional dashboard.

Rider Aids:

Limited to mechanical components; no electronic rider aids.

🔧 Maintenance

Oil Change:

2-stroke oil injection system requires regular monitoring and replenishment. Engine oil for gearbox (if applicable) typically every 3000-5000 km or annually (specifics in manual).

Spark Plug:

Recommended replacement or cleaning every 3,000-5,000 km, depending on usage and plug type (manual will list specific spark plug and gap).

Air Filter:

Cleaning or replacement typically every 3,000-6,000 km or as needed, especially after off-road use (manual specifies type and procedure).

Chain Maintenance:

Regular cleaning, lubrication, and tension adjustment required, typically every 500-1000 km or after wet/dusty riding (manual provides specifications).

Valve Clearance:

Not applicable to 2-stroke engines in the traditional sense; however, KIPS system components may require inspection and adjustment as per manual.

Engine Oil:

API grade TC-W3 or equivalent high-quality 2-stroke oil for oil injection system. Gearbox oil: SAE 80W or 85W API GL-4 (specifics in manual).

Coolant:

Ethylene glycol-based coolant mixed with distilled water (50/50 ratio typically). Manual specifies type and capacity.

Common Problems:

KIPS system malfunction (sticking valves), carburetor jetting issues, clutch wear, fork seal leaks, general wear and tear on a 30+ year old machine. Manual provides diagnostics and repair for these.

Preventative Maintenance:

Adhering to the periodic maintenance schedule outlined in the manual is crucial for longevity and reliability.

📚 Vehicle History

Kawasaki Legacy:

Kawasaki has a long history in motorcycle manufacturing, particularly known for its performance-oriented and innovative models, including their successful off-road and dual-sport lines.

Kmx Lineage:

The KMX series was Kawasaki's answer to the growing demand for lightweight, agile dual-sport motorcycles capable of both on-road commuting and off-road trail riding. It built upon the legacy of earlier Kawasaki dual-sports like the G5 and KH series.

Production Period:

The KMX 125 was produced throughout the 1980s and into the early 1990s, with this manual covering a significant portion of its initial production run.

Manufacturing Location:

Primarily Japan, though specific assembly locations could vary by market.

🏆 Awards & Recognition

Model Recognition:

The Kawasaki KMX 125 was well-regarded in its class for its performance and off-road prowess, though specific awards might be difficult to pinpoint after this many years.

Reliability Rating:

Generally considered reliable when properly maintained, typical of Kawasaki engineering. Manual aids in maintaining this reliability.