The Kawasaki Ninja EX250, also known as the Ninja 250R, specifically the EX250J/JFA models, represents a significant entry in the entry-level sportbike segment from 2008 to 2012. This generation is celebrated for its lightweight chassis, agile handling, and a design that echoes Kawasaki's larger Ninja sportbikes, making it an appealing choice for new riders and those seeking an affordable yet capable machine for commuting and sport riding. Built with proven engineering, the Ninja 250R offers a blend of reliability and accessible performance, featuring a liquid-cooled, parallel-twin engine and a 6-speed transmission, all contributing to its reputation as a well-rounded and user-friendly motorcycle. This comprehensive Service Repair Manual provides detailed guidance for the maintenance, repair, and overhaul of Ninja EX250 models from 2008 through 2012. It covers all essential systems, including the engine, transmission, chassis, brakes, and electrical systems, offering step-by-step procedures for everything from routine maintenance like oil changes and valve adjustments to more complex tasks such as engine rebuilds and electrical diagnostics. Additionally, the manual includes troubleshooting guides for common issues and technical specifications, serving as an indispensable resource for owners, technicians, and mechanics aiming to keep their Ninja 250R in optimal condition. 🏷️ Basic Information Identification Make: Kawasaki Model: Ninja EX250 Model Variant: EX250J/JFA Model Designation: Ninja 250R Codes Vin Designation: JKA type J 👋 Introduction Market Position Segment: Entry-level sportbike, beginner-friendly motorcycle. Target Audience: New riders, commuting, sport riding enthusiasts seeking an affordable and reliable machine. Competitive Analysis Competitors: Honda CBR250R, Suzuki GS500F (older models), Yamaha R3 (later models), Ninja 300 (later models). Key Features Agility: Lightweight chassis and nimble handling. Affordability: Accessible purchase price and low running costs. Reliability: Proven Kawasaki engineering known for durability. 📋 Manual Details Coverage Areas Years Covered: 2008, 2009, 2010, 2011, 2012 Specific Models Covered: EX250J (North America), EX250JFA (specific markets) Page Count Estimated Pages: Approximately 500+ Manual Type Type: Service Repair Manual Language Language: English Format Format: PDF (Portable Document Format) File Format: PDF Print Quality: High resolution, suitable for printing individual pages or the entire manual. Binding Type Binding Type: Not Applicable (Digital Download) Paper Type Paper Type: Not Applicable (Digital Download) 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, disassembly, assembly, lubrication, cooling system, fuel system (carburetor specifications, adjustment), ignition system, exhaust system, emissions controls. Transmission: Gearbox removal and installation, internal components, clutch operation, shift mechanism. Chassis: Frame inspection and repair, front fork overhaul, rear suspension system, steering system. Brakes: Front and rear brake system inspection, service, hydraulic system bleeding, pad replacement, caliper service. Electrical System: Wiring diagrams, charging system (stator, regulator/rectifier), starting system (starter motor, battery), lighting system (headlight, taillight, turn signals), ignition system components, instrument panel, sensors. Fuel System: Carburetor identification, disassembly, cleaning, reassembly, adjustment, fuel tank and lines. Cooling System: Radiator, fan, thermostat, coolant specifications, bleeding procedures. Bodywork And Trim: Fairing removal and installation, seat, tank cover, fenders. Procedures Included Maintenance: Oil changes, filter replacements, spark plug replacement, chain adjustment, brake fluid checks, coolant checks, air filter cleaning/replacement. Troubleshooting: Diagnostic charts for common starting problems, running issues, electrical faults, and performance anomalies. Repair: Detailed step-by-step instructions for component removal, installation, and repair across all systems. Rebuilds: Engine top-end and bottom-end rebuild procedures, carburetor rebuilds. Adjustments: Valve clearance adjustment, idle speed adjustment, carburetor synchronization (if applicable), clutch and throttle cable adjustments. Technical Depth Depth: Comprehensive (from basic maintenance to complete engine teardowns and electrical system diagnostics). ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, DOHC, 8-valve, parallel-twin Displacement: 249 cc (249.8cc) Bore X Stroke: 55.0 x 52.4 mm Compression Ratio: 11.0:1 Cooling System: Liquid-cooled Performance Horsepower: Approx. 30-34 PS (22-25 kW) @ 10,500 rpm (market dependent) Torque: Approx. 20-22 Nm (15-16 lb-ft) @ 8,000 rpm (market dependent) Fuel System Fuel Delivery: Carburetor (Dual Keihin CVK32) Fuel Type: Unleaded gasoline, 91 octane (or higher) recommended Ignition Ignition System: Digital CDI Lubrication Oil Type: SAE 10W-40 API SG or SH Oil Capacity: 1.7 L (1.8 US qt) with filter change 🔧 Transmission Standard Transmission Type: 6-speed constant mesh Clutch: Wet, multiple-disc Final Drive: Sealed chain Features Gear Ratios: Refer to manual for specific ratios. 📐 Dimensions Exterior Length: 2,000 mm (78.7 in) Width: 750 mm (29.5 in) Height: 1,100 mm (43.3 in) Wheelbase: 1,370 mm (53.9 in) Ground Clearance: 155 mm (6.1 in) Seat Height: 775 mm (30.5 in) Weights Dry Weight: Approximately 154 kg (340 lbs) Wet Weight: Approximately 167 kg (368 lbs) Fuel Tank Capacity: 18 L (4.8 US gal) 🛡️ Safety Features Ratings Crash Test Ratings: Not typically rated by consumer safety organizations like NHTSA/IIHS for motorcycles. Active Features Braking System: Front: Single 290mm petal disc with 2-piston caliper. Rear: Single 220mm petal disc with 2-piston caliper. (Some models may have optional ABS, but uncommon for this generation EX250). Lighting: Halogen headlight, LED taillight. Passive Features Frame Construction: High-tensile steel diamond frame. Tires Front:...