Market Segment:
Entry-level sportbike, lightweight commuter, beginner motorcycle.
Competitors 1990S:
Honda CBR250RR, Yamaha FZR250R, Suzuki GSX-R250.
Vehicle Appeal:
Affordable performance, manageable power, sporty styling, good fuel economy, ease of maintenance.
Manual Benefit:
Empowers owners to perform routine maintenance, diagnose issues, and undertake repairs, saving time and money compared to dealership service. Crucial for preserving the lifespan and performance of the motorcycle.
Vehicle Coverage:
Kawasaki GPX250R (EX250-F, EX250-G, EX250-H, EX250-J, EX250-K, EX250-L, EX250-M)
Page Count:
Estimated 200-300 pages (typical for a supplement covering multiple years)
Manual Type:
Service Repair Manual Supplement
Format:
Digital (PDF) / Print (likely print-on-demand or scanned)
Engine Systems:
Engine overhaul, top-end rebuild (cylinder head, valves, camshafts), bottom-end rebuild (crankshaft, connecting rods, pistons), cooling system (liquid-cooled), lubrication system (oil pump, oil passages).
Fuel System:
Carburetor tuning and rebuilding (typically twin Keihin CVK carburetors), fuel pump operation (if applicable), fuel tank and lines.
Ignition System:
Ignition timing, spark plugs, ignition coils, CDI unit (Capacitor Discharge Ignition).
Transmission System:
Clutch operation and adjustment, gearbox inspection, gear shaft removal and installation, shift drum and fork mechanisms.
Electrical System:
Wiring diagrams, battery maintenance, charging system (stator, regulator/rectifier), lighting circuits, starter motor circuit, instrument panel indicators.
Chassis And Suspension:
Front fork servicing (oil change, seal replacement), rear shock absorber adjustment and replacement, swingarm maintenance, steering head bearing service.
Braking System:
Front and rear brake caliper overhaul, brake pad replacement, brake fluid bleeding, master cylinder inspection.
Bodywork And Fairings:
Fairing removal and installation, seat maintenance, fuel tank removal and installation, accessory mounting.
Routine Maintenance:
Oil changes, filter replacements, chain adjustment and lubrication, spark plug inspection and replacement, air filter cleaning/replacement, coolant level checks, brake fluid checks.
Troubleshooting:
Diagnostic charts for common starting, running, and electrical issues, symptom-based fault finding.
Engine Repair:
Complete engine disassembly and reassembly procedures, piston ring replacement, valve clearance adjustment, timing chain replacement.
Carburetor Rebuild:
Detailed steps for cleaning, re-jetting, and synchronizing twin carburetors.
Suspension Servicing:
Front fork seal and bushing replacement, rear shock linkage lubrication.
Electrical Diagnostics:
Testing stator output, regulator/rectifier function, troubleshooting lighting and starting circuits.
Brake System Maintenance:
Brake pad replacement, caliper piston service, brake line bleeding procedures.
Depth Of Coverage:
Comprehensive coverage for engine, transmission, chassis, electrical, and bodywork repairs. Includes detailed exploded views, torque specifications, and diagnostic procedures suitable for experienced home mechanics and professional technicians.
Engine Type:
Liquid-cooled, four-stroke, DOHC, parallel-twin.
Displacement:
248 cc (approximately, varies slightly by generation/market code)
Bore X Stroke:
55.0 mm x 52.4 mm (typical for early models, check specific sub-model).
Compression Ratio:
11.0:1 (typical)
Horsepower:
Approximately 30-35 HP (varies by year and market restrictions).
Torque:
Approximately 20-23 Nm (varies by year and market restrictions).
Carburetion:
Twin Keihin CVK carburetors (e.g., CVK30 or similar).
Fuel Tank Capacity:
Approximately 13-16 Liters (varies by generation).
Oil Type:
API SE, SF, or SG classification, SAE 10W-40 motorcycle oil recommended. (Consult manual for specific viscosity based on temperature).
Oil Capacity:
Approximately 1.6-1.9 Liters with filter change. (Verify in manual).
Length:
Approximately 2000 mm (varies by generation).
Width:
Approximately 700 mm (varies by generation).
Height:
Approximately 1100 mm (varies by generation).
Dry Weight:
Approximately 140-150 kg (varies by generation).
Wet Weight:
Approximately 155-165 kg (with fluids).
Front Tire Size:
110/70-17 or 100/80-17 (typical, confirm in manual).
Rear Tire Size:
130/70-17 or 120/80-17 (typical, confirm in manual).
Wheel Base:
Approximately 1370-1390 mm (varies by generation).
Oil Change Interval:
Every 3,000-5,000 km or 6 months, whichever comes first. (Consult manual for precise recommendations).
Chain Lubrication Inspection:
Every 500-1,000 km or after riding in wet conditions.
Spark Plug Check:
Every 6,000-10,000 km.
Valve Clearance Check:
Every 12,000-18,000 km.
Coolant Type:
Permanent type anti-freeze coolant, mixture of 50% ethylene glycol and 50% distilled water. (Consult manual for specific Kawasaki coolant).
Brake Fluid:
DOT 3 or DOT 4 brake fluid. (Always use fresh fluid from a sealed container).
Carburetor Issues:
Clogged jets, diaphragm issues due to age and fuel quality, synchronization drift. Often requires thorough cleaning and rebuilding.
Electrical Issues:
Corroded connections, failing regulator/rectifier, worn stator windings over time. Symptoms include poor charging, intermittent electrical faults.
Suspension Wear:
Front fork seals may leak, and rear shock can lose damping effectiveness with age and mileage.
Cam Chain Tensioner:
Some models may exhibit cam chain rattle if the tensioner becomes worn or fails.
Kawasaki Legacy:
Kawasaki Heavy Industries, Ltd. is a renowned Japanese manufacturer with a long history in motorcycles, aerospace, and heavy industry, known for performance and innovation.
Gpz250 To Gpx250:
The GPX250R evolved from earlier models like the GPZ250, inheriting its parallel-twin engine architecture and sportbike styling, with updates focusing on aerodynamics, chassis refinement, and minor engine enhancements over its production run.
Manufacturing Locations:
Primarily Japan. Some models may have been assembled in other regions.
Sales Performance:
Consistently popular as an entry-level sportbike and a reliable commuter, contributing to Kawasaki's strong presence in the 250cc segment globally.
