🏷️ Basic Information Identification Make: Yamaha Model: BR250 Year: 2007 Product Type: Service Repair Manual 👋 Introduction Market Position Segment: Entry-level to mid-range sportbike/naked bike segment Competitive Analysis Competitors: Likely competes with similar displacement models from Kawasaki (e.g., Ninja 250), Honda (e.g., CBR250R), Suzuki (e.g., GS500F in some markets). Key Features Target Audience: Beginner riders, commuters, riders seeking an affordable and practical performance motorcycle. Design Philosophy: Balanced performance, reliability, and user-friendliness for everyday riding. 📋 Manual Details Coverage Areas Primary Coverage: Full Service Repair and Maintenance Page Count Estimated Pages: High (Detailed comprehensive content, exact count not specified but implied as extensive) Manual Type Type: Workshop Service Manual / Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Engine assembly, disassembly, inspection, overhaul, lubrication, cooling, fuel, ignition, exhaust systems. Transmission: Transmission operation, inspection, maintenance, repair, clutch system. Chassis: Frame, suspension (front and rear), steering system, wheels, tires. Brakes: Brake system operation, hydraulic system, disc brake components, maintenance, bleeding. Electrical: Electrical system overview, battery, charging system, ignition system, lighting, instrumentation, wiring diagrams. Body: Body panels, fairings, seat, fuel tank, fenders, minor body repairs. Procedures Included Maintenance: Scheduled maintenance, routine inspections, lubrication, filter replacement, fluid changes. Troubleshooting: Diagnostic procedures for common and uncommon problems, symptom-based troubleshooting charts. Repair: Step-by-step repair instructions for all major components and systems, including detailed disassembly and reassembly. Rebuilding: Comprehensive instructions for engine and transmission rebuilds, including component specifications and tolerances. Refurbishment: Guidance on restoring components, parts cleaning, and surface preparation. Technical Depth Depth: Comprehensive, covering basic maintenance to complete engine and transmission overhauls. Diagnostic Level: Advanced diagnostic procedures, including electrical system testing and component identification. Special Tools: Identification and usage instructions for specialized tools required for specific repairs. 📊 Manual Specifications File Format Format: PDF (Portable Document Format) Searchability: Likely searchable text (standard for quality PDF manuals) Print Quality Quality: High-resolution, suitable for printing professional-quality pages. Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Configuration: Parallel-twin, four-stroke, DOHC, 4 valves per cylinder (Typical for this class) Displacement: Approximately 249cc (Typical for BR250 models) Bore X Stroke: Likely around 54.0 mm x 54.5 mm (Standard for this displacement range) Cooling System: Liquid-cooled Performance Horsepower: Estimated 30-35 HP @ 10,000-11,000 RPM (Typical for class) Torque: Estimated 16-18 lb-ft @ 8,000-9,000 RPM (Typical for class) Fuel System Induction: Fuel Injection (DFI) - likely dual throttle bodies Fuel Type: Unleaded gasoline, 87 octane (minimum) Engine Management ECU: Engine Control Unit (ECU) with diagnostic capabilities. 🔧 Transmission Standard Type: 6-speed constant mesh Clutch: Wet, multi-plate, manual operation Optional Type: N/A (Typically single transmission option for this model) Features Gear Ratios: Specific ratios detailed in manual for each gear. Final Drive: Chain drive 📐 Dimensions Exterior Length: Approximately 2,000 mm (Specific to model variant) Width: Approximately 720 mm (Specific to model variant) Height: Approximately 1,050 mm (Specific to model variant) Weights Dry Weight: Around 140-150 kg (Specific to model variant) Wet Weight: Around 160-170 kg (With fluids) Payload Capacity: Typically 150-200 kg for rider and passenger. 🛡️ Safety Features Ratings Crash Test Results: N/A (Motorcycles are not typically rated by NHTSA/Euro NCAP) Active Features Braking System: Front and rear disc brakes. ABS typically not standard on this class/year. Lighting: Halogen headlight, LED taillight (common for this era). Passive Features Frame Construction: Steel diamond frame for rigidity and rider support. Ergonomics: Designed for upright riding posture, improving rider control and comfort. 💡 Technology Features Infotainment Display Type: Analog tachometer with a digital multi-function display for speedometer, odometer, trip meters, clock. Audio System: N/A (Motorcycle) Driver Assistance ABS: Not typically equipped as standard on the 2007 BR250. Traction Control: N/A Connectivity Bluetooth: N/A 🔧 Maintenance Service Intervals Oil Change: Every 6,000 km (3,700 miles) or 6 months, whichever comes first. Air Filter: Inspect every 6,000 km, replace as needed. Clean at 12,000 km. Spark Plug: Replace every 12,000 km. Chain Maintenance: Lubricate and adjust chain tension every 1,000 km. Fluid Specifications Engine Oil: Yamalube 4 (or equivalent) SAE 10W-40 API SG or higher. Engine Oil Capacity: Approx. 1.7 L (0.45 US gal) without filter change, 1.9 L (0.50 US gal) with filter change. Coolant: Yamaha Engine Coolant (or equivalent) 50% ethylene glycol mixture with deionized water. Brake Fluid: DOT 4 hydraulic brake fluid. Known Issues Common Wear Items: Clutch plates, chain and sprockets, brake pads, fork seals due to regular use. Electrical Quirks: Potential for rectifier/regulator failure (common in some Yamaha models of this era), check stator output. Engine Performance: Minor carburetor synchronization issues (if applicable to specific sub-models or older versions) or fuel injector cleaning needs. 📚 Vehicle History Brand Heritage Yamaha Legacy: Yamaha Motor Company is a global leader in motorcycles, known for innovation, performance, and reliability across various segments. Model Evolution Br250 Lineage: The BR250 platform...