The Ninja 250R (EX250J), produced from 2008 to 2012, represents a significant evolution in Kawasaki's popular lightweight sportbike lineage. Building on a heritage of accessible performance, this generation features a striking, aggressive styling, enhanced aerodynamics, and chassis improvements that deliver a dynamic riding experience. Powered by a 249 cc liquid-cooled parallel-twin engine, it offers an approximate 34 horsepower, making it an ideal choice for both new riders entering the sportbike segment and experienced enthusiasts seeking a nimble and reliable machine for commuting or spirited riding. Its reputation is further solidified by Kawasaki's long-standing commitment to engineering quality and reliability, consistently earning praise for its affordability and user-friendly characteristics. This comprehensive English-language service repair manual provides in-depth guidance for the Ninja 250R (EX250J) models. It covers all essential aspects of maintenance, troubleshooting, and repair, including detailed procedures for the engine, fuel system, ignition, cooling, transmission, suspension, braking system, and electrical components. With step-by-step instructions, torque specifications, diagnostic guides, and troubleshooting procedures, this manual is an indispensable resource for DIY enthusiasts and professional technicians alike. It aims to empower users to maintain their vehicle's optimal performance, ensure safety, and carry out repairs efficiently, offering a level of detail that surpasses standard owner's manuals. 🏷️ Basic Information Identification Make: Kawasaki Model: Ninja 250R Generation: EX250J (Second Generation) Model Years Covered: 2008, 2009, 2010, 2011, 2012 Codes Chassis Code: EX250J 👋 Introduction Market Position Target Audience: DIY motorcycle enthusiasts, independent repair shops, and Kawasaki owners seeking detailed maintenance and repair guidance. Value Proposition: Provides comprehensive, manufacturer-level information to empower owners to perform maintenance and repairs, saving time and money. Competitive Analysis Alternative Resources: Owner's manuals (limited scope), online forums (variable accuracy), third-party repair guides (can be less detailed). Key Features Completeness: Offers exhaustive coverage for all mechanical and electrical aspects of the motorcycle. Detail Level: Provides precise specifications, procedures, and diagnostic information crucial for accurate repairs. 📋 Manual Details Coverage Areas Manual Type: Full Service Repair Manual Language: English Format: Digital (likely PDF) Page Count Estimated Page Count: 300-500 pages (typical for a full service manual) 📖 Manual Coverage Systems Covered Engine Mechanics: Complete engine disassembly, inspection, repair, and reassembly for all internal components. Fuel System: Carburetor tuning, cleaning, and rebuilding; fuel pump and filter service; fuel tank inspection and cleaning. Ignition System: Spark plug diagnosis and replacement, ignition coil testing, CDI unit troubleshooting, timing adjustments. Cooling System: Radiator service, coolant flushing and replacement, thermostat operation, fan motor testing, hose inspection. Exhaust System: Muffler and pipe inspection, gasket replacement, catalytic converter diagnostics. Transmission And Drivetrain: Clutch inspection and adjustment, gearbox disassembly and reassembly, chain and sprocket maintenance, final drive ratios. Front Suspension: Fork disassembly, seal replacement, oil changes, spring inspection, steering head bearing service. Rear Suspension: Monoshock inspection and adjustment, linkage system service, swingarm bearing maintenance. Braking System: Front and rear brake pad replacement, caliper service, master cylinder overhaul, brake fluid bleeding and replacement, ABS system (if equipped) diagnostics. Wheel And Tire Service: Tire pressure checks, tire replacement, wheel bearing inspection and replacement, rim runout checks. Electrical System: Battery maintenance and testing, charging system diagnosis (alternator, regulator/rectifier), starter motor troubleshooting, lighting system checks, wiring diagrams. Bodywork And Fairings: Fairing removal and installation, seat maintenance, fuel tank removal, instrument cluster service. Frame And Chassis: Frame inspection for damage, alignment checks. Procedures Included Preventative Maintenance: Detailed schedules for oil changes, filter replacements, chain adjustments, brake checks, and fluid flushes. Troubleshooting Guides: Systematic diagnostic procedures for common and uncommon problems, fault code interpretation (if applicable). Disassembly And Reassembly: Step-by-step instructions with torque specifications for all major components. Component Testing: Methods for testing electrical components, sensors, and mechanical parts. Calibration And Adjustment: Procedures for setting ignition timing, valve clearances, carburetor synchronization, and suspension sag. Technical Depth Diagnostic Capabilities: Advanced diagnostic procedures, including electrical system troubleshooting and component testing using multimeters and specialized tools. Repair Scope: Covers everything from basic maintenance to complete engine and transmission overhauls. Illustrations And Diagrams: Likely includes detailed exploded views, wiring diagrams, and schematic illustrations for clarity. 📊 Manual Specifications File Format File Type: PDF (Portable Document Format) Searchability: Searchable text for quick access to information. Printability: Printable pages for hands-on workshop use. Print Quality Image Resolution: High-resolution images and diagrams suitable for printing. Binding Type Binding Style: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, DOHC, parallel-twin, liquid-cooled Displacement: 249 cc (15.2 cu in) Bore X Stroke: 62.0 x 41.2 mm (2.44 x 1.62 in) Compression Ratio: 11.7:1 Performance Horsepower Est: Approx. 34 HP @ 11,000 RPM (claimed) Torque Est: Approx. 17 lb-ft @ 8,000 RPM (claimed) Fuel System Carburetion: Dual Keihin CVK30 carburetors Fuel Tank Capacity: 18 L (4.8 US gal) 🔧 Transmission Standard Transmission Type: 6-speed, constant mesh Clutch Type: Wet, multiple disc Features Final Drive: Sealed chain 📐 Dimensions Exterior...