This manual covers the KX125 and KX250 motorcycles from the 2003, 2004, and 2005 model years. These 2-stroke, liquid-cooled single-cylinder motorcycles are renowned for their performance heritage in motocross. Key...
This manual covers the KX125 and KX250 motorcycles from the 2003, 2004, and 2005 model years. These 2-stroke, liquid-cooled single-cylinder motorcycles are renowned for their performance heritage in motocross. Key features include advanced engine technology, a perimeter high-tensile steel frame, and adjustable suspension systems designed for optimal handling and rider control. The KX series has a strong legacy in competitive off-road riding, with these models representing a significant period of development in their history.
This comprehensive service manual provides essential technical information for the repair, maintenance, and troubleshooting of your KX125 or KX250. It covers a wide range of systems, including engine, drivetrain, chassis, suspension, and electrical components. Detailed procedures for routine and scheduled maintenance, as well as in-depth repair instructions and diagnostic steps, are included. This manual is an indispensable resource for owners and technicians seeking to maintain the performance and longevity of their motorcycles, offering guidance from basic checks to complex component overhauls.
🏷️ Basic Information
Identification
Make:
Kawasaki
Model:
KX125 & KX250
Product Type:
Motorcycle Repair Manual Download
Vendor:
MyGreenManuals.com
Codes
Engine Type Kx125:
2-Stroke
Engine Type Kx250:
2-Stroke
Generation
Model Years Covered:
2003, 2004, 2005
👋 Introduction
Market Position
Target Audience:
Owners and mechanics of 2003-2005 Kawasaki KX125 and KX250 motorcycles.
Value Proposition:
Provides essential technical information for DIY repairs, maintenance, and troubleshooting, offering cost savings and convenience over physical manuals.
Competitive Analysis
Advantage Over Paper:
Instant download, no shipping costs, portable on devices for on-trail repairs, environmentally friendly, protected against damage/loss.
Key Features
Accessibility:
Immediate access post-payment, usable on smartphones, tablets, and computers.
📋 Manual Details
Coverage Areas
Primary Coverage:
Repair, Maintenance, Troubleshooting
Secondary Coverage:
Parts Lookup, Routine Maintenance
Page Count
Estimated Pages:
Extensive (specific count not provided, typical for full service manuals)
Manual Type
Type:
Service Manual / Repair Manual / Owner's Manual / Parts Catalog (Comprehensive)
Language
Language:
English
Format
Format:
Digital Download (PDF)
📖 Manual Coverage
Systems Covered
Engine:
Engine Removal and Installation, Engine Specifications, Fuel System, Lubrication and Cooling System, Intake & Exhaust
Perimeter, high-tensile steel (typical for this era)
Weights
Dry Weight Kx125 Approx:
93 kg (205 lbs)
Dry Weight Kx250 Approx:
102 kg (225 lbs)
🛡️ Safety Features
Ratings
Safety Focus:
Designed for off-road competition; safety features primarily related to rider control and equipment integrity.
Active Features
Braking System:
Disc brakes front and rear
Suspension Damping:
Adjustable front and rear suspension for optimal handling and stability.
💡 Technology Features
Infotainment
Features:
N/A (Competition motocross bikes of this era typically do not feature infotainment systems).
Driver Assistance
Features:
N/A (Focus is on rider input and mechanical systems).
Connectivity
Features:
N/A
🔧 Maintenance
Service Intervals
Oil Change Frequency:
Variable, dependent on usage (e.g., after specific operating hours or competitive events). Manual provides detailed guidelines.
Air Filter Cleaning:
Frequent cleaning recommended, especially in dusty conditions.
Spark Plug Inspection:
Regular inspection and replacement as needed based on performance.
Fluid Specifications
Engine Oil Type:
Specific 2-stroke pre-mix oil recommended by Kawasaki (e.g., KAWASAKI KENDALL 2-CYCLE OIL or equivalent meeting API TC, JASO FD standards).
Transmission Oil Type:
SAE 10W-40 API GL-4 (or specified equivalent like KAWASAKI GEAR OIL)
Coolant Type:
Permanent type antifreeze (ethylene glycol base) mixed with distilled water in a 50/50 ratio.
Known Issues
Common Wear Items:
Piston rings, clutch plates, chain and sprockets, wheel bearings, fork seals, spark plugs are common wear items requiring periodic replacement.
Engine Tuning Sensitivity:
Two-stroke engines can be sensitive to jetting and ignition timing, requiring precise adjustment for optimal performance and longevity.
📚 Vehicle History
Brand Heritage
Kawasaki Motocross:
Kawasaki has a long and successful history in motocross racing with its KX line, renowned for performance and innovation.
Model Evolution
Kx125 Kx250 Evolution:
These models represent a significant period in the development of 125cc and 250cc two-stroke motocross bikes, featuring advancements in engine technology (like KIPS - Kawasaki Integrated Power Valve System) and chassis design.
Production
Production Era:
2003-2005 models were part of the generation that continued the aggressive performance heritage of the KX series.
🏆 Awards & Recognition
Recognitions
Motocross Contributions:
Kawasaki KX models have consistently been competitive in professional and amateur motocross, often praised for their power delivery and handling.
Ratings
Editorial Reviews Era:
Contemporary reviews from magazines like Dirt Rider and Motocross Action often highlighted the strong performance and sharp handling of these KX models.
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