🏷️ Basic Information

Make:

Yamaha

Model:

BR250

Year:

1999

Model Code:

BR250 (Specific model code may vary by region, e.g., BR250-X)

👋 Introduction

Segment:

Entry-level to mid-range sport/naked motorcycle segment.

Competitors:

Competes with other similarly sized Japanese motorcycles of the era, such as certain Kawasaki Zephyr models, Honda CB series, and Suzuki GS series motorcycles. Known for Yamaha's reliability and performance.

Features:

Torquey engine, comfortable riding position, reliable powerplant, suitable for commuting and light sport riding. The BR250 often features a classic or retro styling.

📋 Manual Details

Systems Covered:

Engine, Transmission, Drivetrain, Fuel System, Ignition System, Cooling System, Exhaust System, Chassis, Suspension, Brakes, Electrical System, Lighting, Instruments, Bodywork, Maintenance, Troubleshooting, Repair Procedures, Specifications.

Page Count:

Comprehensive (exact page count not specified, but implied to be extensive for a full service repair manual)

Manual Type:

Full Service Repair Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine:

Detailed disassembly, assembly, inspection, and repair of all engine components including cylinder head, valves, pistons, crankshaft, camshaft, lubrication system, and cooling system. Includes specifications for clearances and tolerances.

Transmission Drivetrain:

Covers clutch operation, gearbox disassembly and reassembly, shift mechanism, final drive, and lubrication. Includes gear ratios and component inspections.

Fuel System:

Detailed information on carburetor(s) (type and specifications), fuel pump, fuel lines, and fuel tank. Includes jetting specifications, float level adjustment, and troubleshooting.

Ignition System:

Covers ignition timing, spark plugs, ignition coil, CDI unit, and related wiring. Includes troubleshooting for ignition failures.

Brakes:

Front and rear brake system service, including hydraulic fluid specifications, bleeding procedures, brake pad/shoe replacement, caliper/master cylinder overhaul, and drum brake adjustment.

Suspension Steering:

Front fork overhaul (oil type, level, and seals), rear shock absorber service, swingarm and linkage lubrication, steering head bearing adjustment, and wheel bearing service.

Electrical Lighting:

Wiring diagrams, component testing (stator, rectifier/regulator, battery, starter motor, lights, horn, turn signals), fuse box layout, and troubleshooting electrical faults.

Maintenance:

Routine maintenance tasks such as oil changes, filter replacement, spark plug replacement, chain adjustment and lubrication, brake adjustments, and general inspection.

Troubleshooting:

Systematic diagnostic procedures for common problems, including starting issues, poor performance, electrical malfunctions, and braking problems. Includes symptom-based troubleshooting guides.

Repair Rebuild:

Step-by-step instructions for complete engine and transmission overhauls, suspension component replacement, brake system repairs, and bodywork adjustments.

Specifications Data:

Torque specifications for all fasteners, fluid capacities, recommended fluid types, wear limits, electrical resistance values, and diagnostic parameters.

Depth:

Comprehensive, covering everything from basic rider maintenance to full engine rebuilds and electrical system diagnostics. Suitable for home mechanics and professional technicians.

📊 Manual Specifications

File Format:

PDF

Searchability:

Likely to be text-searchable, enabling quick access to specific information.

Quality:

Digital high-resolution, allowing for clear viewing and printing of diagrams and text.

Binding Type:

N/A (Digital download)

Paper Type:

N/A (Digital download)

⚙️ Engine Specifications

Type:

Four-stroke, Air-cooled, DOHC, Parallel-Twin

Displacement:

249 cc (Exact displacement may vary by specific market version)

Bore X Stroke:

Specifications would be detailed in the manual (e.g., 54.0 mm x 54.5 mm)

Compression Ratio:

Specifications would be detailed in the manual (e.g., 9.5:1)

Horsepower:

Approx. 25-30 HP (Actual figures would be in the manual)

Torque:

Approx. 20-23 Nm (Actual figures would be in the manual)

Fuel Delivery:

Carburetor(s) (e.g., Dual Mikuni VM series or similar)

Fuel Type:

Unleaded gasoline

Oil Type:

Yamalube or equivalent motorcycle-specific API SG or higher, JASO MA certified oil (e.g., 10W-40 or 20W-50 depending on climate)

Cooling Method:

Air-cooled

🔧 Transmission

Type:

Constant mesh 6-speed

Clutch Type:

Wet, multi-plate

Optional Transmission:

N/A

Final Drive:

Chain drive

Transmission Oil Type:

Yamalube Gear Oil or equivalent API GL-4 (e.g., SAE 80W-90)

📐 Dimensions

Overall Length:

Specifications would be detailed in the manual (e.g., ~2050 mm)

Overall Width:

Specifications would be detailed in the manual (e.g., ~750 mm)

Overall Height:

Specifications would be detailed in the manual (e.g., ~1080 mm)

Wheelbase:

Specifications would be detailed in the manual (e.g., ~1400 mm)

Ground Clearance:

Specifications would be detailed in the manual

Dry Weight:

Specifications would be detailed in the manual (e.g., ~150-160 kg)

Wet Weight:

Specifications would be detailed in the manual (e.g., ~165-175 kg)

Fuel Tank Capacity:

Specifications would be detailed in the manual (e.g., ~14 liters including reserve)

🛡️ Safety Features

Safety Ratings:

Motorcycle safety is primarily based on rider skill and adherence to road laws. No formal crash ratings are issued for motorcycles in the same way as cars.

Active Safety Features:

Effective braking system (front disc, rear drum or disc depending on variant), responsive handling, proper lighting for visibility.

Passive Safety Features:

Sturdy frame construction, protective bodywork (minimal), rider protection equipment (helmet, jacket, gloves, etc., not integrated into vehicle).

💡 Technology Features

Infotainment Features:

Basic analog instrumentation: speedometer, tachometer, odometer, trip meter, neutral indicator, turn signal indicators, high beam indicator. No advanced infotainment features.

Driver Assistance Systems:

N/A

Connectivity Features:

N/A

🔧 Maintenance

Oil Change Interval:

Every 3,000 - 5,000 km or 6 months, whichever comes first (refer to manual for exact interval).

Air Filter Cleaning Replacement:

Inspect every 3,000 km, clean or replace as needed. Replace every 10,000 - 15,000 km.

Spark Plug Replacement:

Replace every 8,000 - 12,000 km or as per manual recommendations. Check gap regularly.

Chain Lubrication Adjustment:

Lubricate every 500-1000 km and adjust tension as needed. Check for wear.

Brake Fluid Flush:

Flush and replace every 2 years (or as per manual) regardless of mileage.

Engine Oil Capacity:

Specifications would be detailed in the manual (e.g., approx. 1.8 - 2.0 liters with filter change).

Fork Oil Type Capacity:

Yamaha Fork Oil G10 or equivalent, specific level detailed in the manual (e.g., 135 mm from top of inner tube with fork compressed and spring removed).

Brake Fluid Type:

DOT 3 or DOT 4 (check manual for specific requirement).

Common Wear Items:

Clutch wear, chain and sprockets wear, fork seal leaks, carburetor jetting degradation, starter motor brushes. Regular maintenance is key to longevity.

Electrical Issues:

Potential for aging wiring harness connections, rectifier/regulator failure, or battery degradation over time. The manual's troubleshooting section is crucial here.

📚 Vehicle History

Yamaha Heritage:

Yamaha Motor Corporation has a long and distinguished history in motorcycle manufacturing, known for innovation, performance, and reliability across various motorcycle segments, from sportbikes to cruisers and off-road vehicles.

Br250 Lineage:

The BR250 represents Yamaha's offering in the lightweight to mid-size naked motorcycle category. Models in this displacement class often serve as excellent entry points for new riders or as practical commuter bikes. Specific evolutionary steps for the BR250 are less documented publicly than larger Yamaha models, but it likely evolved from earlier Yamaha parallel-twin designs.

Production Years:

The 1999 model year indicates its production within that era. Yamaha typically produces models for several years with minor updates.

Manufacturing Location:

Yamaha motorcycles are produced globally, with significant manufacturing facilities in Japan, Indonesia, and other countries.

🏆 Awards & Recognition

Industry Awards:

While specific awards for the BR250 model might not be widely publicized, Yamaha as a brand consistently receives recognition for engineering, performance, and reliability in motorcycle publications and rider surveys across its model range.