🏷️ Basic Information Identification Make: Kawasaki Model: KX250 Years Covered: 1990, 1991 Codes Engine Type: 2-Stroke 👋 Introduction Market Position Target Audience: Owners and Technicians of 1990-1991 Kawasaki KX125 and KX250 Motorcycles Competitive Analysis Provider Advantage: Instant digital access, cost-effective alternative to physical manuals, environmental friendly. Key Features Key Features: Comprehensive coverage of repair and maintenance for specific model years, accessible via digital download. 📋 Manual Details Coverage Areas Primary Coverage: Repair, Maintenance, Troubleshooting Additional Coverage: Engine Specifications, Parts Look-up (Implied by Product Description) Page Count Page Count: Not Specified (Digital Download) Manual Type Manual Type: Service Manual / Workshop Manual / Repair Manual Language Language: English Format Format: PDF Download Accessibility: Printable on demand, viewable on multiple devices (smartphones, tablets, computers) 📖 Manual Coverage Systems Covered Engine: Engine Removal/Installation, Engine Specs, Fuel System, Lubrication/Cooling, Intake/Exhaust Drivetrain: Transmission, Drive Chain & Sprockets Chassis: Steering System, Shocks, Body Work Electrical: Electrical System Suspension: Front forks (USD - Upside Down), Rear shock absorber (Uni-Trak system) Procedures Included Maintenance: Routine Maintenance, Fluid Changes, Lubrication Repair: Engine Rebuilds, Component Repair, Troubleshooting Troubleshooting: Advanced Troubleshooting, Problem Diagnosis Engine Rebuild: Top-end (piston, rings, cylinder), Bottom-end (crankshaft, bearings) Carburetor Rebuild: Disassembly, cleaning, reassembly, jetting adjustments Power Valve Adjustment: Crucial for 2-stroke performance, manual will cover inspection and adjustment Technical Depth Depth: Comprehensive (from routine maintenance to advanced diagnostics and rebuilds) Wiring Diagrams: Included (for the electrical system) Torque Specifications: Detailed torque values for all critical fasteners Clearances: Engine component clearances, suspension linkage, bearing play 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: Printable (user dependent) Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Access Download Type: Instant Download after Payment Support Support Policy: Lifetime Protection Policy (if lost or damaged) ⚙️ Engine Specifications Primary Engine Kx125 Engine Type: Liquid-cooled, 2-stroke, single-cylinder Kx250 Engine Type: Liquid-cooled, 2-stroke, single-cylinder Performance Kx125 Bore X Stroke: 54.0 x 54.5 mm (Typical for this era, manual would confirm) Kx250 Bore X Stroke: 66.0 x 72.0 mm (Typical for this era, manual would confirm) Kx125 Displacement: 124 cc (Typical for this era, manual would confirm) Kx250 Displacement: 249 cc (Typical for this era, manual would confirm) Fuel System Fuel Delivery: Carburetor (Specific model and size would be detailed in manual) Fuel Type: Unleaded gasoline with 2-stroke oil mix (Ratio specified in manual) Lubrication Lubrication System: Premix or Automatic Injection (Manual will specify) Cooling Cooling System: Liquid-cooled 🔧 Transmission Standard Transmission Type: 6-speed manual Features Clutch Type: Wet, multi-disc Final Drive: Chain drive 📐 Dimensions Weights Kx125 Dry Weight: Approx. 92 kg (203 lbs) (Exact specification in manual) Kx250 Dry Weight: Approx. 101 kg (223 lbs) (Exact specification in manual) 💡 Technology Features Infotainment Infotainment System: N/A (Pure performance motocross bikes of this era) Driver Assistance Driver Assistance Features: N/A Connectivity Connectivity Features: N/A 🔧 Maintenance Service Intervals Engine Oil Change: Refer to manual for specific hours/miles Air Filter Cleaning: Frequent cleaning recommended, especially in dusty conditions (Refer to manual) Fluid Specifications Transmission Oil Type: Specific gear oil (e.g., SAE 80 or 10W-30, manual will detail) Coolant Type: Specific mixture of antifreeze and distilled water (Manual will specify ratio) Known Issues Common Kx Issues Era: Clutch wear, carburetor jetting sensitivity, power valve maintenance, suspension seal leaks (Manual will provide detailed troubleshooting for these and more). Spark Plug Recommendation Spark Plug: Refer to manual for specific plug type and heat range (e.g., NGK BR9EG or equivalent) Tire Pressure Tire Pressure Front: Refer to manual (typically 18-20 psi for motocross) Tire Pressure Rear: Refer to manual (typically 12-15 psi for motocross) 📚 Vehicle History Brand Heritage Kawasaki Motocross History: Kawasaki has a long and successful history in motocross racing with the KX line. Model Evolution Kx125 Kx250 1990 1991: These models represent a significant evolution in Kawasaki's 125cc and 250cc motocross offerings, featuring advancements in suspension, engine performance, and chassis design for improved racing capabilities. Production Production Period: 1990-1991