🏷️ Basic Information

Make:

Kawasaki

Model:

KX80

Model Code:

KX80-N3

Year:

1990

Generation Designation:

Second Generation KX80

Engine Code:

Not explicitly specified, but implies a 79.7cc 2-stroke single cylinder engine

👋 Introduction

Target Audience:

Mechanics and DIY (Do-It-Yourself) individuals seeking detailed repair information.

Purpose:

To provide data, characteristics, instructions, and methodology for performing repair interventions on the Kawasaki KX80-N3.

Advantage:

Comprehensive, detailed, step-by-step procedures with pictorial diagrams, making it easy to understand for new personnel.

Accessibility:

Instant download, no shipping costs or waiting, available today upon payment.

Completeness:

100% complete and intact, no missing or corrupt pages/sections.

User Friendliness:

Specially prepared for simple explanations, enabling even new personnel to perform satisfactory after-services.

📋 Manual Details

Primary Focus:

Repair and maintenance of the Kawasaki KX80-N3

Scope:

Comprehensive step-by-step procedures, explanations, and pictorial diagrams for all repair interventions.

Total Pages:

252

Type:

Workshop Service Manual / Repair Manual

Language:

English

File Format:

PDF

Delivery Method:

Instant Download

📖 Manual Coverage

Engine:

Detailed information on engine disassembly, assembly, adjustment, and repair, including internal components.

Fuel System:

Carburetor adjustments, cleaning, and servicing procedures.

Ignition System:

Information on ignition timing, components, and troubleshooting.

Cooling System:

Details on liquid cooling system maintenance and repair (if applicable to the N3 model).

Transmission:

Clutch operation, gearbox disassembly, assembly, and adjustment procedures.

Chassis:

Frame, sub-frame, and mounting points inspection and repair.

Suspension:

Front fork (telescopic) and rear suspension (monoshock) disassembly, overhaul, and adjustment.

Brakes:

Front and rear brake system maintenance, bleeding, and component replacement (drum or disc).

Electrical System:

Wiring diagrams, lighting, ignition, and charging system component testing and repair.

Bodywork And Trim:

Fairings, seat, handlebars, and controls removal, installation, and adjustment.

Wheels And Tires:

Wheel bearing inspection, tire replacement, and spoke tensioning.

Maintenance:

Routine maintenance, lubrication, filter changes, and inspections.

Troubleshooting:

Diagnostic procedures for common issues, identifying causes and solutions.

Disassembly And Assembly:

Detailed instructions for taking apart and putting back together all major components and systems.

Adjustment:

Specific procedures for adjusting clutch, throttle, brakes, suspension, and carburetor settings.

Repair:

Guidance on repairing damaged or worn components, including specifications for wear limits.

Installation:

Instructions for installing new or replacement parts and accessories.

Depth:

Comprehensive, covering everything from basic adjustments to complete engine rebuilds and component overhauls.

Detail Level:

Detailed explanations, step-by-step procedures, and pictorial diagrams (illustrations, exploded diagrams, photos) for all service and repair work.

Special Tools:

Reference to specific special service tool numbers and their usage.

Specifications:

Includes service data, tightening torques, wear limits, and factory specifications.

📊 Manual Specifications

File Type:

PDF

Compatibility:

Windows, Mac, Linux OS

Software Requirement:

Adobe Reader

Printability:

Yes, all pages are printable.

Binding:

Digital (PDF Download)

Paper Quality:

Not Applicable (Digital Format)

⚙️ Engine Specifications

Engine Type:

2-stroke, Single Cylinder

Displacement:

79.7 cc

Bore X Stroke:

48.0 x 44.0 mm

Cooling System:

Liquid-cooled (typical for this era KX80).

Compression Ratio:

7.3:1 (Typical for this model)

Ignition:

CDI (Capacitor Discharge Ignition)

Horsepower:

Approximately 20-22 HP (estimated based on the era and class).

Torque:

Not explicitly stated, but generally a torquey low-end for its class.

Carburetor Model:

Typically a Mikuni VM24SS or similar.

Fuel Type:

Unleaded gasoline with 2-stroke oil mixture.

Recommended Fuel Octane:

91-96 AKI (Anti-Knock Index)

Oil Mixture Ratio:

Refer to manual for specific ratio, typically 20:1 or 32:1 with high-quality 2-stroke oil.

🔧 Transmission

Transmission Type:

6-speed constant mesh

Optional Transmissions:

N/A (Standard for the model)

Clutch Type:

Wet, multi-plate

Final Drive:

Chain drive

Transmission Oil Type:

Kawasaki specifies specific gear oil, consult manual for exact specification and capacity.

📐 Dimensions

Length:

Refer to manual for exact dimensions, typically around 1800mm.

Width:

Refer to manual for exact dimensions, typically around 750mm.

Height:

Refer to manual for exact dimensions, typically around 1100mm.

Wheelbase:

Refer to manual for exact dimensions, typically around 1250mm.

Dry Weight:

Approximately 72 kg (158.7 lbs)

Curb Weight:

Not explicitly stated, but slightly higher than dry weight with fluids.

🛡️ Safety Features

Safety Certification:

Not applicable for a competition motocross bike of this era.

Braking System:

Front: Disc brake, Rear: Drum brake (typical configuration).

Frame Construction:

High-tensile steel perimeter frame for rigidity and durability.

💡 Technology Features

Infotainment System:

N/A (This is a dedicated competition motocross bike from 1990; no infotainment features.

Driver Assistance Features:

N/A (This is a competition motocross bike; no driver assistance systems.

Connectivity Features:

N/A (This is a competition motocross bike; no connectivity features.

🔧 Maintenance

Oil Change Interval:

Refer to manual for gearbox oil change intervals, typically after every few race weekends or a set number of riding hours.

Air Filter Cleaning:

Frequent cleaning and oiling recommended, especially after riding in dusty conditions.

Spark Plug Replacement:

Recommended at regular intervals or based on performance; specific interval in manual.

Top End Rebuild:

Crucial for 2-stroke engines, intervals vary based on usage, but typically every 20-40 hours of hard riding.

Gearbox Oil Type:

Kawasaki explicitly states a specific gear oil (e.g., SAE 80 API GL-4 or GL-5). Consult manual for exact specification and capacity.

Coolant Type:

Ethylene glycol-based antifreeze (typically a 50/50 mix with distilled water). Consult manual for specific type and capacity.

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid, depending on system specification. Consult manual.

Carburetor Fouling:

Common in 2-strokes due to fuel/oil mixture; requires regular cleaning and jetting checks.

Clutch Wear:

Can occur with aggressive riding; clutch plate wear is a common maintenance item.

Suspension Seal Leaks:

Front fork seals and rear shock seals can degrade over time, leading to fluid leaks.

Engine Top End Wear:

Piston rings, piston, and cylinder bore wear is expected with usage; regular rebuilds are necessary for optimal performance.

📚 Vehicle History

Kawasaki Motocross Legacy:

Kawasaki has a long and successful history in motocross racing, with the KX line being a dominant force in various displacement classes.

Kx80 Development:

The KX80 was a popular model in Kawasaki's youth motocross lineup, evolving through various chassis and engine updates to remain competitive. The 'N' series typically represents specific chassis and engine configurations for a given model year.

Kx80 N3 Designation:

The 'N3' designation refers to a specific iteration or sub-model of the 1990 KX80, likely indicating minor refinements or specific component changes from previous 'N' models.

Production Period:

The KX80 model was produced through the late 1970s into the 2000s, with various iterations.

🏆 Awards & Recognition

Motocross Performance:

While specific awards for the 1990 KX80-N3 are not detailed here, Kawasaki's KX line has consistently received praise and accolades in motocross publications and competitions throughout its history.

Reputation:

The KX80 was generally regarded as a competitive and capable machine for its class, offering strong performance and handling.