🏷️ Basic Information Identification Make: Yamaha Model: BR250 Year: 2004 Codes Chassis Code: BD7 👋 Introduction Market Position Category: Sportbike / Naked Bike Target Audience: Owners and independent repair shops seeking in-depth maintenance and repair information. Competitive Analysis Comparison: Competes with similar displacement naked bikes and entry-level sportbikes from Japanese manufacturers. Key Features Vehicle Appeal: Agile handling, accessible performance, and characteristic Yamaha reliability. Manual Value Proposition: Enables DIY maintenance and repairs, saving on labor costs and ensuring proper upkeep of the vehicle. 📋 Manual Details Coverage Areas Diagnostic Procedures: Comprehensive troubleshooting guides, fault code interpretation, diagnostic connector locations. Mechanical Repairs: Engine overhaul, transmission disassembly/assembly, suspension and steering component replacement, brake system service. Electrical Systems: Wiring diagrams, component testing, charging system diagnostics, ignition system troubleshooting. Page Count Estimated Pages: 500+ Manual Type Type: Full Service & Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Cylinder head, valves, camshafts, pistons, connecting rods, crankshaft, lubrication system, cooling system, fuel injection system. Engine Electrical: Ignition system, starter motor, alternator, battery, ECU, sensors (crankshaft position, camshaft position, throttle position, oxygen), wiring harness. Transmission Drivetrain: Gearbox overhaul, clutch system, drive shafts, differential, final drive. Brakes: Brake system diagnostics, front and rear brake caliper service, master cylinder overhaul, brake fluid replacement, ABS system (if applicable). Suspension Steering: Front fork assembly, rear shock absorber, steering head bearings, linkage components, wheel bearing service. Fuel System: Fuel tank, fuel pump, fuel filter, fuel injectors, fuel pressure regulator. Exhaust System: Exhaust manifold, catalytic converter, muffler, lambda sensor replacement. Electrical Components: Lighting system, horn, indicators, battery charging system, instrumentation. Procedures Included Maintenance Tasks: Oil changes, filter replacements, spark plug service, air filter cleaning/replacement, chain adjustment, lubrication points. Rebuild Procedures: Complete engine rebuild, transmission overhaul, carburetor/fuel injection cleaning and adjustment, suspension damper rebuilding. Troubleshooting: Step-by-step diagnostic procedures for common and uncommon issues, electrical fault finding charts. Technical Specifications: Torque values for all fasteners, engine clearances, electrical system voltages, fluid capacities. Special Tools: Identification of required special tools for specific repair procedures. Technical Depth Depth: Comprehensive from basic maintenance to full engine and transmission rebuilds, including electrical diagnostics. Detail Level: Detailed, step-by-step instructions with accompanying diagrams and illustrations. 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text for quick information retrieval. Print Quality Quality: High-resolution, suitable for printing. Binding Type Binding: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Liquid-cooled, four-stroke, DOHC, parallel-twin Displacement: 249 cc Bore X Stroke: 54.0 mm x 54.5 mm Compression Ratio: 12.0:1 Carburetion: Mikuni BSR32 x 2 (or similar EFI in some markets/later iterations) Performance Horsepower: Approx. 30-32 HP (at crankshaft) Torque: Approx. 22-24 Nm (at crankshaft) Fuel System Fuel Delivery: Fuel Injection (if applicable, check specific market variant for carburetion) Fuel Type: Unleaded gasoline Lubrication System Oil Type: Yamalube 4-stroke motorcycle oil, SAE 10W-40 or 20W-50 (refer to manual for exact specification) Cooling System Coolant Type: Yamaha-recommended antifreeze coolant mixture (50/50 ethylene glycol) 🔧 Transmission Standard Transmission Type: Constant mesh, 6-speed Clutch Type: Wet, multiple disc Optional Optional Features: N/A (standard configuration) Features Gear Ratios: Refer to manual for specific gear ratios (e.g., 1st: 2.833, 2nd: 1.944, 3rd: 1.500, 4th: 1.238, 5th: 1.045, 6th: 0.913) Final Drive: Chain drive Transmission Fluid Type: Yamalube Gear Oil (or equivalent motorcycle-specific gear oil) 📐 Dimensions Exterior Length: Approx. 2060 mm Width: Approx. 750 mm Height: Approx. 1065 mm Wheelbase: Approx. 1400 mm Weights Dry Weight: Approx. 141 kg Wet Weight: Approx. 154 kg (fully fueled) Fuel Tank Capacity: 14 Liters Seat Height: Approx. 780 mm 🛡️ Safety Features Ratings Crash Test Results: N/A (Motorcycle safety is assessed differently than cars, focus is on design and rider aids). Active Features Braking System: Hydraulic disc brakes front and rear. Suspension Stability: Well-balanced chassis and suspension for predictable handling. Passive Features Lighting: Halogen headlight, LED taillight. 💡 Technology Features Infotainment Display: Analog tachometer, digital speedometer, odometer, trip meters, fuel gauge, clock. Driver Assistance ABS: ABS was generally an optional feature or not available on this specific model year in most markets; verify vehicle specification. Connectivity Connectivity Features: N/A (Basic instrumentation, no modern connectivity features). 🔧 Maintenance Service Intervals Oil Change: Every 4,000 km or 4 months, whichever comes first (refer to manual for exact interval and conditions). Air Filter: Inspect every 4,000 km, clean/replace as needed. Spark Plugs: Replace every 12,000 km or as per manual specification (e.g., NGK CR9E or equivalent). Chain Maintenance: Lubricate and adjust chain every 1,000 km or after washing/rain. Fluid Specifications Engine Oil Capacity: Approx. 1.8 Liters (without filter change), 2.0 Liters (with filter change). Coolant Capacity: Approx. 1.3 Liters. Brake Fluid: DOT 4 Known Issues Common Wear Items: Clutch wear, chain and sprockets wear, brake pad wear, fork seal leaks, steering head bearing adjustment/replacement. Electrical Gremlins: Occasional issues with...