Segment:
Lightweight/Mid-size Sportbike
Target Audience:
Riders seeking a stylish, agile, and reliable motorcycle for everyday use and spirited riding
Key Competitors:
Honda CB400SS, Kawasaki Zephyr 400, Suzuki GS500E (though the SRV250 has a distinct aesthetic)
Design Philosophy:
Neo-classical styling with modern performance characteristics
Engine Configuration:
V-twin, air-cooled
Drivability:
Known for its smooth power delivery and manageable performance
Engine Overhaul:
Complete engine disassembly, inspection, repair, and reassembly procedures
Fuel System:
Carburetor tuning, cleaning, and overhaul; fuel pump and lines
Ignition System:
Spark plug service, ignition timing, CDI unit diagnostics
Cooling System:
Radiator, fan, thermostat, coolant flush and fill procedures
Transmission And Clutch:
Gearbox inspection, repair, clutch plate replacement, and adjustment
Frame And Suspension:
Fork overhaul, shock absorber service, chassis alignment checks
Brake System:
Front and rear brake caliper service, fluid replacement, pad replacement, and bleeding procedures
Electrical System:
Wiring diagrams, lighting, battery, charging system, starter motor, and troubleshooting
Bodywork And Fairings:
Panel removal, installation, and minor repair guidance
Wheels And Tires:
Tire pressure checks, wheel bearing service, spoke tensioning
Routine Maintenance:
Oil changes, filter replacements, chain adjustment, lubrication schedules
Troubleshooting Guides:
System-specific diagnostic flowcharts and common issue resolution
Component Overhaul:
Detailed steps for disassembling and rebuilding major motorcycle components
Torque Specifications:
Critical torque values for all fasteners and engine components
Special Tool Requirements:
Identification and usage of specialized tools for specific repair procedures
Diagnostic Level:
Comprehensive diagnostics for all electrical and mechanical systems
Rebuild Scope:
Full engine, transmission, and suspension rebuild capabilities
Diagram Detail:
Hundreds of detailed photos and exploded diagrams
User Level:
Suitable for professional mechanics and advanced DIY enthusiasts
Engine Type:
4-stroke, V-twin, SOHC, 4-valve per cylinder
Displacement:
249 cc (249cc)
Bore X Stroke:
49.0 x 66.0 mm (typical for SRV250 variants)
Compression Ratio:
9.7:1 (typical)
Cooling System:
Air-cooled
Horsepower:
Approx. 26-30 HP at 9000 RPM (speculative, varies by market and tune)
Torque:
Approx. 20-22 Nm at 7000 RPM (speculative, varies by market and tune)
Carburetion:
Twin Carburetors (e.g., Mikuni VM24 or similar)
Fuel Capacity:
Approx. 14 Liters (varies slightly by sub-model)
Brakes Front:
Disc brake (caliper type varies by sub-model, typically single piston)
Brakes Rear:
Disc brake (caliper type varies by sub-model, typically single piston)
Lighting:
Halogen headlight, taillight, and turn signals
Engine Oil Change:
Every 3,000-5,000 km or 6 months
Spark Plug Service:
Inspect every 5,000 km, replace as needed
Chain Lubrication Adjustment:
Every 500-1,000 km, or after washing/rain
Brake Fluid Flush:
Every 2 years or as specified in manual
Engine Oil Type:
Yamaha recommends Yamalube or equivalent SAE 10W-40 or 10W-50 API SG or higher motorcycle oil
Engine Oil Capacity:
Approx. 1.8 - 2.0 Liters (with filter change)
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid
Coolant Type:
Permanent type antifreeze coolant (ethylene glycol based) mixed with distilled water (50:50 ratio)
Carburetor Sync:
Carburetors may require periodic synchronization for smooth running, especially at idle and low RPMs.
Cam Chain Tensioner:
Some older models may develop a noisy cam chain tensioner, requiring adjustment or replacement.
Electrical Connections:
Corrosion on electrical connectors, particularly in high-humidity areas, can lead to intermittent electrical issues.
Exhaust System Corrosion:
Stock exhaust systems can be prone to rust and corrosion over time, especially if regularly exposed to moisture.
