Market Position:
High-performance sportbike, direct competitor to Yamaha TZR250 and Kawasaki KR-1. Known for its advanced technology and racing pedigree.
Competitive Analysis:
Positioned as a premium 250cc two-stroke sportbike, offering superior handling and engine performance compared to many contemporary four-stroke alternatives. The RGV250 was a dominant force in production racing series.
Key Features:
Lightweight chassis, powerful V-twin 2-stroke engine, advanced suspension systems, race-inspired ergonomics, aggressive styling.
Model Variants:
Includes coverage for various iterations and updates within the 1990-1996 RGV250 model range, such as the VJ22A and VJ23A generations.
Engine:
2-stroke V-twin engine (liquid-cooled), engine assembly, disassembly, tuning, lubrication, cooling system, fuel system (carburetors, reed valves), exhaust system.
Transmission:
6-speed sequential gearbox, clutch system (wet multi-plate), transmission overhaul, gear shifting mechanism.
Chassis:
Frame inspection and repair, suspension (front telescopic forks, rear monoshock), steering system, swingarm.
Brakes:
Front and rear disc brakes, hydraulic system, brake caliper overhaul, master cylinder service, brake bleeding.
Electrical:
Ignition system, lighting system (headlight, taillight, indicators), battery, charging system (alternator), starter motor, wiring diagrams, fuses, switches, sensors.
Bodywork:
Fairing removal and installation, seat, fuel tank, fenders.
Maintenance:
Routine checks, oil changes, filter replacements, chain adjustment, spark plug replacement, carburetor synchronization.
Troubleshooting:
Diagnostic charts for common problems, fault finding based on symptoms (e.g., starting issues, poor running, electrical faults).
Repair:
Complete disassembly and reassembly procedures for all major components, including engine rebuilds, transmission overhauls, and suspension repairs.
Specifications:
Detailed torque specifications for all fasteners, engine clearances, fluid capacities, electrical resistance values.
Depth:
Expert level, covering complete engine rebuilds, gearbox disassembly, electrical system diagnostics, and suspension tuning. Suitable for experienced mechanics and dedicated enthusiasts.
Engine Type:
Liquid-cooled, 2-stroke, V-twin, reed valve induction.
Displacement:
249 cc (247 cc for earlier models)
Bore X Stroke:
54.0 mm x 54.5 mm (typical)
Compression Ratio:
7.2:1 - 7.4:1 (depending on model year)
Horsepower:
Approximately 55-60 hp at 11,000 rpm (varies by market and year due to emissions regulations)
Torque:
Approximately 38-40 Nm at 10,000 rpm
Carburetors:
Dual Mikuni VM28SS (or similar sized carburetors)
Fuel Type:
Unleaded gasoline (minimum 95 RON recommended)
Oil Injection:
Automatic oil injection system (Suzuki's), separate oil tank.
Power Valves:
Suzuki Exhaust Control Valve (SEEC) system for improved powerband and emissions.
Infotainment System:
N/A (Basic motorcycle instrumentation: speedometer, tachometer, odometer, turn signal indicators, high-beam indicator).
Driver Assistance:
N/A (Focus is on rider control and performance).
Engine Management Features:
Suzuki Exhaust Control Valve (SEEC) for optimized power delivery and emissions control, CDI ignition system.
Oil Change Interval:
Every 3,000-5,000 km or annually, whichever comes first. Recommended to use a high-quality 2-stroke motorcycle oil. Consult manual for specific viscosity.
Air Filter Cleaning:
Every 3,000-6,000 km depending on riding conditions. Clean and re-oil (if foam type).
Spark Plug Replacement:
Every 5,000-10,000 km. Specific plug types (e.g., NGK BR9EG) detailed in manual.
Chain Lubrication Adjustment:
Every 500-1,000 km and after washing/rain. Adjust slack as per manual specifications.
Engine Oil Type:
High-quality 2-stroke motorcycle oil, JASO FD or higher. Consult manual for specific brand and viscosity recommendations (e.g., 10W-40 for gearbox oil if applicable).
Coolant Type:
Ethylene glycol-based antifreeze mixed with distilled water (50:50 ratio). Refer to manual for specific coolant specification.
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid. Replace every 2 years.
Fork Oil Type:
Specific suspension fork oil viscosity (e.g., Showa SS-8 or equivalent) and level. Detailed in manual.
Known Issues:
Carburetor jetting sensitivity to altitude and temperature, power valve mechanism maintenance, crank seal leaks (common on older 2-strokes), clutch wear, electrical connector corrosion.
Common Maintenance Tasks:
Regular carburetor cleaning and synchronization, checking and servicing the SEEC power valve system, proper 2-stroke oil and fuel mixture.
Brand Heritage:
Suzuki has a long history of building successful two-stroke motorcycles, particularly in the sportbike and racing categories, building on the legacy of models like the RG500 Gamma.
Model Evolution:
The RGV250 evolved from the earlier RG250 Gamma and featured significant updates across its production run, including chassis improvements, engine refinements (e.g., the VJ23A with its more sophisticated engine management and chassis), and styling changes.
Production Years:
1988-1996 (covering the manual's scope)
Manufacturing Location:
Japan
Racing Heritage:
The RGV250's design was heavily influenced by Suzuki's Grand Prix racing machines, contributing to its competitive performance and enthusiast following.
