Segment:
Entry-level sportbike, beginner-friendly motorcycle.
Target Audience:
New riders, commuters, budget-conscious enthusiasts seeking a reliable and sporty motorcycle.
Key Competitors:
Honda CBR250R, Yamaha YZF-R25 (later model), Suzuki GS500F (larger displacement but similar role).
Design Philosophy:
Lightweight, agile, aerodynamic fairing design, user-friendly power delivery.
Sales Appeal:
Affordability, fuel efficiency, manageable power, sporty aesthetics.
Engine:
Complete engine disassembly, assembly, diagnosis, tuning, internal components (pistons, rings, valves, camshafts, crankshaft), cooling system, lubrication system.
Fuel System:
Carburetor system (cleaning, adjustment, jetting), fuel tank, fuel pump, fuel lines, fuel filter replacement.
Transmission:
Clutch system (operation, adjustment, replacement), gearbox internal components, gear shifting mechanisms, transmission fluid specifications and replacement.
Drivetrain:
Final drive (chain, sprockets) inspection, adjustment, and replacement; rear wheel hub assembly.
Brakes:
Front and rear brake systems (hydraulic), brake caliper service, brake pad replacement, brake fluid flush and replacement, master cylinder service, brake line inspection.
Suspension:
Front telescopic forks (oil change, seal replacement, spring inspection), rear monoshock absorber service, linkage inspection and lubrication, swingarm service.
Electrical System:
Ignition system (spark plugs, ignition coils, CDI unit), starting system (starter motor, starter solenoid, battery), charging system (alternator/stator, rectifier/regulator), lighting system (headlights, taillights, turn signals), instrumentation, wiring diagrams, troubleshooting electrical faults.
Chassis And Bodywork:
Frame inspection, body panel removal and installation, seat, handlebars, footpegs, fairing components, fuel tank mounting.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, chain lubrication and adjustment, brake adjustments, tire pressure checks, valve clearance checks and adjustment.
Troubleshooting:
Diagnostic procedures for common starting, running, and electrical issues; symptom-based troubleshooting guides.
Repair:
Detailed step-by-step instructions for component removal, repair, overhaul, and reassembly for all major motorcycle systems.
Technical Specifications:
Torque specifications for all fasteners, engine performance data, dimensional data, electrical specifications, fluid capacities.
Depth:
Comprehensive (from basic rider maintenance to complete engine and transmission rebuilds).
Engine Type:
Liquid-cooled, four-stroke, DOHC, parallel-twin
Displacement:
248 cc (15.1 cu in)
Bore X Stroke:
55.0 x 52.4 mm
Compression Ratio:
11.0:1
Valve Train:
4 valves per cylinder
Horsepower Peak:
~30-32 hp @ 10,500 rpm (approximate, varies slightly by year and region)
Torque Peak:
~15-16 lb-ft @ 8,000 rpm (approximate, varies slightly by year and region)
Fuel Delivery:
Carburetor: Keihin CVK34 (dual carburetors)
Fuel Type:
Unleaded gasoline, minimum 87 octane
Cooling Method:
Liquid-cooled
Oil Type:
API SG or SH, JASO MA certified 4-stroke motorcycle oil, SAE 10W-40 recommended (refer to manual for specific viscosity based on temperature).
Ignition System:
Digital CDI (Capacitor Discharge Ignition)
Engine Control:
Mechanical (carburetor based)
Oil Change Interval:
Every 6,000 km (3,700 miles) or 6 months, whichever comes first. (Refer to manual for exact mileage and time).
Chain Lubrication Adjustment:
Every 1,000 km (600 miles) or after washing/rain riding. Check slack regularly.
Valve Clearance Check:
Every 12,000 km (7,500 miles) or 12 months.
Air Filter Cleaning:
Every 6,000 km (3,700 miles) or 6 months. Replace as needed.
Coolant Type:
Kawasaki-specific coolant or equivalent anti-freeze/anti-corrosion mixture (e.g., ethylene glycol based) mixed 50/50 with distilled water. Capacity: Approx. 1.6 L.
Brake Fluid Type:
DOT 4 recommended for hydraulic brake systems.
Common Wear Items:
Brake pads, clutch plates, chain and sprockets, tires, fork seals, spark plugs.
Potential Problems:
Carburetor synchronization issues with mileage, carburetor jetting sensitivity to altitude or modifications, occasional coolant leaks if maintenance is neglected.
Kawasaki Legacy:
Kawasaki Heavy Industries has a long history of producing high-performance motorcycles, including iconic sportbikes and racing machines.
Ninja Lineage:
The Ninja EX250 is part of Kawasaki's renowned Ninja sportbike family, known for delivering performance and style.
Generation Updates:
This generation (2008-2012) received a significant styling update with a more aggressive, modern fairing design, dual headlights, and improved aerodynamics compared to its predecessor.
Manufacturing Location:
Primarily manufactured in Thailand for global markets.