The Ninja 250R, specifically the EX250K Series, represents the second generation of this popular entry-level sportbike, produced from 2007 to 2011. Known for its sharp, aggressive styling and nimble handling, this model is engineered to provide an accessible yet engaging riding experience, making it a favored choice for beginner motorcyclists and those seeking an economical and reliable sportbike for commuting and recreational riding. Its robust inline-twin engine, coupled with a 6-speed transmission and effective braking system, contributes to its reputation for durability and enjoyable performance. This comprehensive workshop service repair manual provides detailed guidance for the maintenance and repair of the Ninja 250R (EX250K Series) for the years 2007 through 2011. It covers all essential systems, including engine mechanicals, fuel and ignition systems, cooling, transmission, chassis, suspension, brakes, and electrical components. The manual offers step-by-step procedures for routine maintenance, troubleshooting common issues, and complete component overhauls, supported by detailed diagrams, illustrations, and critical technical specifications. Its purpose is to empower owners and technicians to effectively maintain, diagnose, and repair the vehicle, ensuring its longevity and optimal performance. 🏷️ Basic Information Identification Make: Kawasaki Model: Ninja 250R Model Designation: EX250K Series Generation Generation Identifier: Second Generation (J-Series Chassis) Codes Chassis Code: EX250K Engine Code Prefix: EX250K 👋 Introduction Market Position Segment: Entry-level sportbike, popular for new riders and commuting. Target Audience: Beginner motorcyclists, budget-conscious riders, those seeking an economical and reliable sportbike. Competitive Analysis Key Competitors: Honda CBR250R, Suzuki GS500F, Yamaha R25 (though R25 came later). Key Features Engine Type: Inline-twin, liquid-cooled, DOHC, 8-valve. Styling: Full fairing, aggressive sportbike aesthetics. Handling: Nimble and predictable, suitable for urban riding and twisty roads. Reliability: Known for its robust and durable powertrain. 📋 Manual Details Coverage Areas Years Covered: 2007, 2008, 2009, 2010, 2011 Regions Covered: Global (standard specifications) Page Count Estimated Page Count: 400-600 pages (typical for a complete workshop manual of this era) Manual Type Manual Type: Complete Workshop Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, disassembly, cylinder head, pistons, crankshaft, connecting rods, valve train, timing chain, lubrication system. Engine Fuel System: Carburetor overhaul (dual Keihin CVK), fuel lines, fuel pump, fuel tank, fuel filter. Ignition System: Ignition coil, spark plugs, CDI unit, wiring, timing checks. Cooling System: Radiator, cooling fan, coolant hoses, thermostat, coolant capacity and type. Transmission And Drivetrain: Clutch operation, gearbox disassembly/assembly, gear selection, final drive chain and sprockets, lubrication. Chassis And Suspension: Frame inspection, front fork (telescopic, cartridge type) disassembly/assembly, rear shock absorber (monoshock) adjustment/replacement, swingarm. Braking System: Front and rear disc brakes, brake caliper overhaul, master cylinder, brake lines, brake fluid type and bleeding procedures, pad replacement. Electrical System: Wiring diagrams, battery, starter motor, alternator, lighting system (headlight, taillight, indicators), horn, fuses, relays, instrument cluster. Bodywork And Trim: Fairing removal/installation, seat, fuel tank cover, fenders, decals, emblems. Procedures Included Routine Maintenance: Oil changes, filter replacement, chain adjustment, brake checks, tire pressure, coolant level checks, spark plug replacement. Troubleshooting: Diagnostic flowcharts, common problems and solutions, symptom-based troubleshooting. Engine Repair: Complete engine rebuild procedures, cylinder head gasket replacement, piston ring replacement, valve adjustments. Transmission Repair: Gearbox internal component replacement, clutch pack servicing. Suspension Overhaul: Front fork seal replacement, rear shock absorber service. Brake System Service: Caliper seal replacement, master cylinder rebuild, brake line replacement. Electrical Diagnostics: Wiring harness inspection, component testing, fault finding for electrical systems. Carburetor Tuning: Idle speed adjustment, mixture screw settings, synchronization procedures. Specifications And Torques: All critical bolt torques, engine clearances, fluid capacities, tire pressures. Technical Depth Depth Of Coverage: Comprehensive (from basic maintenance to full engine and component rebuilds). Diagnostic Capabilities: Advanced diagnostic procedures and troubleshooting charts specific to the model's systems. Diagrams And Illustrations: Detailed exploded views, wiring schematics, and step-by-step procedural illustrations. 📊 Manual Specifications File Format File Format: Portable Document Format (PDF) Searchability: Text-searchable (allows for quick finding of specific terms). Print Quality Print Quality: High-resolution scans suitable for printing (typically 300 DPI or higher). Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Accessibility Device Compatibility: Viewable on computers, tablets, and smartphones with PDF reader software. ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, liquid-cooled, DOHC, parallel-twin Displacement: 249 cc (249 cm³) Bore X Stroke: 55.0 x 52.4 mm Compression Ratio: 11.6:1 Valve Actuation: DOHC, 8 valves (4 per cylinder) Performance Horsepower: Approximately 28-30 PS (19.9-21.5 kW) @ 11,000 rpm (model dependent, may vary by market) Torque: Approximately 18-20 Nm (13.3-14.8 lb-ft) @ 10,000 rpm (model dependent, may vary by market) Fuel System Carburetor Type: Dual Keihin CVK30 semi-downdraft carburetors Fuel Tank Capacity: 18 Liters (4.8 US gal) Lubrication System Oil Type Recommendation: SAE 10W-40 API SG or SH with JASO MA specification (check manual for precise spec). Oil Capacity: 2.0 Liters (2.1 US qt) with filter change. 🔧 Transmission Standard Transmission Type:...