The Ninja 250R (model code EX250J) represents a significant offering in the entry-level sportbike segment, produced between 2008 and 2012. Drawing inspiration from larger Ninja models, it combines sporty aesthetics with accessible performance and user-friendly ergonomics, making it an ideal choice for beginner motorcyclists and those seeking an economical yet enjoyable riding experience. Engineered with a parallel-twin 249cc engine, the Ninja 250R delivers an estimated 30-34 horsepower, supported by a reliable 6-speed transmission and a lightweight chassis. Its design philosophy prioritizes a balance of performance, comfort, and the distinctive sportbike styling, solidifying its reputation as a dependable and fun motorcycle. This comprehensive workshop service manual provides detailed guidance for the maintenance, repair, and troubleshooting of the Ninja 250R from 2008 to 2012. Covering a vast array of systems, including the engine, fuel, ignition, cooling, transmission, brakes, and electrical systems, this manual offers step-by-step instructions, diagnostic procedures, and critical technical specifications. It is an essential resource for owners, mechanics, and technicians, detailing everything from routine oil changes and chain maintenance to in-depth engine rebuilds and electrical fault finding. With approximately 400-600 pages of English content, this manual ensures that users have the necessary information to keep their Ninja 250R in optimal condition. 🏷️ Basic Information Identification Make: Kawasaki Model: Ninja 250R Model Code: EX250J Product Name: Kawasaki 250R Ninja 2008-2012 Workshop Service Manual PDF Download Codes Engine Code Identifier: EX250J 👋 Introduction Market Position Segment: Entry-level sportbike, popular for new riders and budget-conscious enthusiasts. Competitive Analysis Competitors: Honda CBR250R, Yamaha R25, Suzuki GSX250R (though some of these are later models). Key Features Design Philosophy: Sporty styling inspired by larger Ninja models, accessible performance, user-friendly ergonomics. Target Audience: Beginner motorcyclists, commuters, riders seeking an economical and fun sportbike. 📋 Manual Details Coverage Areas Year Coverage: 2008, 2009, 2010, 2011, 2012 Page Count Estimated Page Count: 400-600 Manual Type Type: Workshop Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Complete disassembly, inspection, repair, and reassembly of engine components (cylinder head, pistons, crankshaft, valves, etc.). Fuel System: Carburetor(s) tuning, cleaning, and rebuilding; fuel pump operation; fuel lines; fuel tank inspection and maintenance. Ignition System: Spark plugs, ignition coils, CDI unit, wiring diagrams. Cooling System: Radiator, coolant, water pump, fan operation, hoses. Transmission: Clutch operation, gear shifting mechanism, transmission disassembly and reassembly, lubrication. Frame And Suspension: Front fork disassembly, service, and adjustment; rear shock absorber inspection and replacement; frame integrity checks. Brakes: Front and rear brake caliper service, pad replacement, master cylinder overhaul, hydraulic fluid bleeding, brake line inspection. Electrical System: Battery maintenance, starter motor, alternator, lighting system, horn, wiring diagrams, fuse identification, troubleshooting electrical faults. Wheels And Tires: Tire pressure, tread wear inspection, wheel bearing maintenance, spoke tension adjustment (if applicable). Bodywork And Trim: Fairing removal and installation, seat maintenance, handlebar adjustments. Lubrication System: Oil pump, oil filter, oil passages, oil type specifications. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, spark plug checks, chain adjustment and lubrication, brake fluid flushes. Troubleshooting: Diagnostic procedures for common mechanical and electrical issues, fault finding charts. Repair: Step-by-step instructions for component removal, replacement, and repair. Rebuilds: Detailed procedures for engine and transmission overhauls. Adjustments: Carburetor synchronization, idle speed adjustment, chain slack adjustment, suspension adjustments. Wiring Diagrams: Comprehensive electrical system schematics. Technical Depth Level Of Detail: Comprehensive workshop level, suitable for professional technicians and advanced DIY mechanics. Diagnostic Capabilities: In-depth diagnostic procedures and specifications for identifying and resolving issues. Torque Specifications: Precise torque values for all critical fasteners. Clearances And Tolerances: Specifications for engine component clearances, piston ring gap, bearing tolerances. Special Tools: Identification of special tools required for specific procedures. 📊 Manual Specifications File Format Format: PDF Searchable Text: Likely searchable (depends on scan quality) Print Quality Quality: Digital format, quality dependent on original publication and scan. Binding Type Binding: Not applicable (PDF download) Paper Type Paper Type: Not applicable (PDF download) ⚙️ Engine Specifications Primary Engine Configuration: Inline-twin (parallel-twin) Displacement: 249 cc Bore X Stroke: 55.0 x 52.4 mm Compression Ratio: 11.0:1 Valvetrain: DOHC, 8 valves Performance Horsepower Est: 30-34 hp @ 10,500 rpm Torque Est: 16-18 lb-ft @ 8,000 rpm Fuel System Carburetion: Dual Keihin CVK34 carburetors Fuel Capacity: 18 L (4.8 US gal) 🔧 Transmission Standard Type: 6-speed constant mesh Optional Type: N/A Features Clutch Type: Wet multi-disc Final Drive: Sealed chain 📐 Dimensions Exterior Overall Length: 2009 mm (79.1 in) Overall Width: 750 mm (29.5 in) Overall Height: 1105 mm (43.5 in) Wheelbase: 1370 mm (53.9 in) Ground Clearance: 155 mm (6.1 in) Weights Dry Weight: 152 kg (335.1 lbs) Curb Weight: 169 kg (372.6 lbs) 🛡️ Safety Features Ratings ABS: Optional (available on some models/markets) Active Features Braking System: Dual-piston front caliper with 290mm disc; single-piston rear caliper with 220mm disc. Passive Features Lighting: Halogen headlight, LED taillight. 💡 Technology Features Infotainment Display: Analog...