Segment:
Entry-level to mid-range sport/standard motorcycle segment, often favored for its classic styling and manageable performance.
Competitors:
Competed against models like Honda CB400 Four, Kawasaki Zephyr 400, Suzuki GS500, and other similarly positioned naked or semi-faired Japanese motorcycles of the era.
Styling:
Classic Japanese motorcycle styling, often with a single headlight, round gauges, and a relatively upright riding position.
Target Audience:
Beginner riders, commuters, those seeking a stylish and reliable motorcycle with manageable power, and enthusiasts appreciating retro aesthetics.
Coverage:
Complete factory service and repair for Yamaha SRV250G (1992-1996)
Page Count:
Hundreds of pages (exact count not specified, typical for full workshop manuals)
Manual Type:
Workshop Service Repair Manual
Language:
English (presumed, based on product description context of sales business)
Engine Systems:
Engine assembly, disassembly, tuning, troubleshooting, cooling system, lubrication system, fuel system (carburetion), ignition system, exhaust system
Transmission Drivetrain:
Clutch, gearbox (transmission), final drive (chain and sprockets), lubrication
Chassis Suspension:
Front fork, rear shock absorber, swingarm, frame inspection and repair, steering system
Braking System:
Front and rear brake systems (likely hydraulic disc front, drum or disc rear), master cylinders, calipers, brake lines, bleeding procedures
Electrical System:
Battery, charging system (stator, regulator/rectifier), ignition system, lighting, starting system, wiring diagrams, instrument cluster, sensors
Body Frame:
Fuel tank, seat, fenders, side covers, handlebars, footpegs, fairings/bodywork (if applicable), fasteners
Maintenance Procedures:
Scheduled maintenance, oil changes, filter replacements, spark plug replacement, chain adjustment, brake fluid replacement, coolant replacement (if liquid-cooled), valve clearance adjustment
Repair Procedures:
Engine rebuilds, carburetor overhaul, transmission gear replacement, suspension component repair, electrical component diagnosis and replacement, brake system overhaul
Troubleshooting Guides:
Diagnostic charts, common problem identification, symptom-based troubleshooting for engine, electrical, and mechanical issues
Special Tools:
Identification and usage of specialized tools required for specific repair or maintenance tasks
Depth:
Comprehensive factory-level detail, suitable for professional technicians and experienced DIY mechanics. Covers everything from routine maintenance to complete engine and component overhauls.
File Format:
PDF (Portable Document Format)
Print Quality:
High-resolution scans, designed for clear printing of text, diagrams, and illustrations.
Binding Type:
N/A (Digital PDF, printable by user)
Paper Type:
N/A (Digital PDF, user printable on desired paper)
Searchability:
Likely text-searchable PDF for quick information retrieval, assuming proper OCR was performed on original scans.
Engine Type:
Air-cooled, 4-stroke, DOHC, V-twin
Displacement:
249cc (249 cm³)
Bore X Stroke:
52.0 mm x 57.9 mm (approximate, typical for this displacement V-twin)
Compression Ratio:
9.5:1 (typical for this era and engine type)
Horsepower:
Approx. 30-34 HP @ 8500 RPM (estimated, actual figures may vary slightly by market and specific tuning)
Torque:
Approx. 2.6 kgf·m @ 7000 RPM (estimated, actual figures may vary slightly by market and specific tuning)
Carburetion:
Dual Mikuni carburetors (e.g., VM26 or similar 26mm constant velocity type), often with vacuum operated petcock.
Fuel Type:
Unleaded gasoline, 90-96 octane rating (RON+MON)/2 recommended.
Oil Type:
Yamalube 4 (or equivalent SAE 10W-40 API SF or SG classified motorcycle oil)
Oil Capacity:
Approx. 2.0 liters (with filter change)
Transmission Type:
Constant mesh, 6-speed sequential
Clutch Type:
Wet, multi-plate, cable-actuated
Final Drive:
O-ring sealed chain drive
Gear Ratios:
Specific gear ratios would be detailed in the manual, crucial for performance tuning and troubleshooting.
Transmission Oil Type:
Yamaha Gear Oil Hypoid 80W-90 (or equivalent API GL-4)
Transmission Oil Capacity:
Approx. 0.8 liters (specific figure from manual)
Length:
Approx. 2075 mm (varies slightly by year/spec)
Width:
Approx. 745 mm (varies slightly by year/spec)
Height:
Approx. 1055 mm (varies slightly by year/spec)
Dry Weight:
Approx. 151 kg (varies slightly by year/spec)
Wet Weight:
Approx. 166 kg (with fluids, estimate)
Fuel Capacity:
Approx. 14 liters (including 3-liter reserve)
Wheelbase:
Approx. 1435 mm
Ground Clearance:
Approx. 135 mm
Safety Standards:
Compliant with relevant Japanese domestic market (JDM) and international safety regulations of the early to mid-1990s. Specific crash test ratings are not typically published for motorcycles in the same way as cars.
Braking System Features:
Hydraulic disc front brake for strong stopping power, rear brake typically drum or disc depending on exact model variant. Often featured braided steel lines for improved feel.
Lighting:
Halogen headlight, tail light, brake light, and turn signals for visibility.
Frame Construction:
Steel frame (likely diamond or cradle type) designed for stability and rider feedback.
Tires:
Tubeless tires (front: 110/80-17, rear: 140/70-17, typical sizes but refer to manual for exact specifications).
Suspension Tuning:
Adjustable front fork preload (some models) and rear suspension damping can be fine-tuned for rider preference and load.
Instrumentation:
Analog speedometer and tachometer, fuel gauge (if equipped), odometer, trip meter, warning lights (oil pressure, neutral, high beam, turn signals). Simple and functional design.
Rider Aids:
Limited electronic rider aids, typical for its era. Focus is on mechanical feedback and rider control. ABS was not a common feature on this model.
Connectivity Features:
N/A - No modern connectivity features like Bluetooth or smartphone integration.
Oil Change Interval:
Every 3,000 km or 6 months, whichever comes first. (Refer to manual for precise intervals.)
Air Filter Cleaning:
Every 6,000 km or annually. Replacement as needed.
Spark Plug Replacement:
Every 10,000 km or annually. Specific plug type required (e.g., NGK CR9E or equivalent).
Valve Clearance Check:
Every 12,000 km or every two years.
Brake Fluid Replacement:
Every 2 years or as needed due to moisture absorption. Use DOT 3 or DOT 4 fluid.
Engine Oil Viscosity:
SAE 10W-40
Engine Oil Standard:
API SF or SG classification
Brake Fluid Type:
DOT 3 or DOT 4
Coolant Type:
N/A (Air-cooled engine)
Carburetor Issues:
Potential for gumming or clogging of carburetors if fuel sits for extended periods, especially with ethanol-blended fuels. Synchronization may be required over time.
Charging System:
Regulator/rectifier failure can occur on older units, leading to battery charging issues. Stator output can degrade.
Valve Guides:
Wear in valve guides could lead to oil consumption over high mileage. Regular valve clearance checks are crucial.
Electrical Connections:
Corrosion on electrical connectors, particularly in exposed areas, can lead to intermittent faults. Periodic inspection and cleaning recommended.
Yamaha Motorcycle History:
Yamaha Motor Company has a rich heritage in motorcycle manufacturing dating back to the 1950s, known for innovation, performance, and reliability across various motorcycle segments.
Srv250 Development:
The SRV250 series was developed to offer a stylish, V-twin powered alternative in the popular 250cc class, blending retro aesthetics with modern (for its time) engineering. It was particularly popular in the Japanese domestic market (JDM).
Production Period:
Produced from approximately 1992 through 1996. Variants may exist, and this manual covers the core G-series models within this timeframe.
Manufacturing Location:
Japan
Market Reception:
Generally well-received in its primary market (Japan) for its styling, comfortable ride, and reliability as a 250cc V-twin. Often cited as a good beginner bike or stylish commuter.
Customer Satisfaction:
While specific awards are unlikely for this model, its longevity and continued presence in the used market indicate a degree of owner satisfaction and durability.
