🏷️ Basic Information

Make:

Yamaha

Model:

BR250F

Year:

1987

Product Name:

Yamaha BR250 BR250F 1987 Full Service Repair Manual PDF Download

Chassis Code Prefix:

BR250F

👋 Introduction

Segment:

Dual-purpose motorcycle, often referred to as a 'Dual Sport' or 'Enduro' style bike.

Competitors 1987:

Honda NX250, Kawasaki KLR250, Suzuki DR250S.

Intended Use:

Versatile on-road and off-road capability, commuting, light trail riding, adventure touring.

Target Audience:

Riders seeking a reliable and capable all-around motorcycle for varied terrain and commuting needs.

Manual Value:

Provides comprehensive technical guidance to maintain, repair, and restore the Yamaha BR250F, ensuring longevity and optimal performance.

📋 Manual Details

Primary Coverage:

Full Service Repair

Estimated Page Count:

300-400

Manual Type:

Service Manual / Workshop Manual / Repair Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine:

Complete engine overhaul, disassembly, inspection, assembly, tuning, lubrication system, cooling system (air-cooled), fuel system (carburetor), ignition system, exhaust system.

Transmission:

Gearbox disassembly, inspection, assembly, gear shift mechanism, clutch operation and adjustment.

Drivetrain:

Drive chain adjustment and maintenance, rear hub, sprockets.

Suspension:

Front fork disassembly, inspection, seal replacement, oil levels, rear shock absorber inspection and replacement, swingarm maintenance.

Brakes:

Front and rear brake system maintenance, fluid replacement, bleeding, caliper inspection, brake pad replacement, drum brake adjustment.

Electrical System:

Wiring diagrams, battery maintenance, charging system (stator, regulator/rectifier), lighting system (headlight, taillight, indicators), ignition system troubleshooting, starter motor, horn.

Fuel System:

Carburetor disassembly, cleaning, adjustment, jetting specifications, fuel tank maintenance, fuel lines.

Body And Frame:

Frame inspection, body panel removal and installation, seat, handlebars, controls, footpegs, fenders.

Wheels And Tires:

Tire pressure specifications, wheel bearing maintenance, spoke tension adjustment, rim inspection.

Maintenance:

Regular scheduled maintenance, oil changes, filter replacements, chain lubrication and adjustment, spark plug replacement, air filter cleaning/replacement, brake system checks.

Troubleshooting:

Diagnostic procedures for common problems, electrical system faults, engine performance issues, starting problems, transmission issues.

Repair:

Detailed step-by-step instructions for component disassembly, repair, reassembly, and adjustment for all major vehicle systems.

Rebuild:

Comprehensive guides for engine, carburetor, and suspension component rebuilds.

Specifications And Data:

Torque specifications, tolerances, fluid capacities, wiring diagrams, electrical component data, part numbers (where applicable).

Depth Of Coverage:

Comprehensive: Covers all aspects from basic owner maintenance to advanced mechanical and electrical repair, suitable for professional mechanics and experienced DIY enthusiasts.

📊 Manual Specifications

File Type:

PDF

Print Readability:

High-resolution, clear text and diagrams suitable for printing.

Binding Type:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

Searchable Text:

Likely searchable text within the PDF for quick information retrieval.

⚙️ Engine Specifications

Engine Type:

Four-stroke, single-cylinder, DOHC, 4 valves

Displacement:

249 cc (249.6cc is common for this engine)

Bore X Stroke:

72.0 mm x 61.2 mm (typical for this engine)

Compression Ratio:

9.7:1 (typical)

Cooling System:

Air-cooled

Horsepower Estimated:

Approximately 24-28 hp @ 8000 rpm (varies by market and tuning)

Torque Estimated:

Approximately 20-23 Nm @ 6500 rpm (varies by market and tuning)

Carburetor Type:

Mikuni VM34SS or similar 34mm constant velocity carburetor

Fuel Type:

Unleaded gasoline, octane rating 87 or higher (RON/MON specified in manual)

Ignition Type:

CDI (Capacitor Discharge Ignition)

Oil Type:

Yamalube 4 (or equivalent API SE, SF, SG 10W-40 or 20W-50 motorcycle oil)

Oil Capacity:

Approx. 1.7 - 1.9 Liters (with filter change)

Starter Type:

Electric Start

🔧 Transmission

Transmission Type:

6-speed constant mesh

Clutch Type:

Wet, multi-plate

Gear Ratios:

Specific gear ratios provided in the manual (e.g., 1st: 2.833, 2nd: 1.933, 3rd: 1.478, 4th: 1.200, 5th: 1.045, 6th: 0.917)

Final Drive:

O-ring sealed chain

Transmission Oil Type:

Yamalube 4 (or equivalent API SE, SF, SG 10W-40 or 20W-50 motorcycle oil)

Transmission Oil Capacity:

Approx. 0.9 Liters

📐 Dimensions

Length:

Approx. 2170 mm

Width:

Approx. 830 mm

Height:

Approx. 1175 mm

Wheelbase:

Approx. 1425 mm

Ground Clearance:

Approx. 225 mm

Dry Weight:

Approx. 135 kg

Wet Weight:

Approx. 147 kg

Gross Vehicle Weight Rating:

Not explicitly stated, but rider + passenger + cargo capacity implied.

Fuel Tank Capacity:

Approx. 11 Liters (including reserve)

🛡️ Safety Features

Safety Certifications:

N/A (Motorcycle safety certifications vary by region and are generally not categorized like automotive safety ratings).

Braking System:

Front: Disc brake; Rear: Drum brake.

Lighting:

Halogen headlight, taillight, brake light, turn signals.

Frame Construction:

Steel semi-double cradle frame for stability and durability.

Ergonomics:

Upright riding position for rider comfort and control.

💡 Technology Features

Infotainment Features:

N/A (Focus is on mechanical and electrical function, no infotainment systems).

Driver Assistance Features:

N/A (No electronic driver assistance systems present).

Connectivity Features:

N/A (No connectivity features).

Instrument Panel:

Analog speedometer, tachometer, odometer, trip meter, indicator lights (neutral, oil pressure, turn signals, high beam).

🔧 Maintenance

Oil Change Interval:

Every 3,000-5,000 km or annually (refer to manual for exact intervals based on usage).

Air Filter Cleaning:

Every 1,000-2,000 km or more frequently in dusty conditions.

Spark Plug Replacement:

Every 10,000-15,000 km.

Valve Clearance Check:

Every 5,000-10,000 km (crucial for DOHC engines).

Chain Maintenance:

Lubricate and adjust every 500-1,000 km, inspect for wear.

Brake Fluid Type:

DOT 3 or DOT 4 (refer to manual for specific type and replacement interval).

Coolant Type:

N/A (Air-cooled engine)

Common Wear Items:

Clutch plates, brake pads/shoes, swingarm bushings, fork seals, carburetor diaphragms, charging system components (regulator/rectifier).

Potential Faults:

Carburetor gumming due to infrequent use, electrical connector corrosion, ignition coil failure.

Typical Spark Plug:

NGK CR9E or equivalent (verify with manual).

Typical Oil Filter:

If applicable, would be a cartridge type or internal screen (verify with manual).

📚 Vehicle History

Yamaha Motorcycles:

Yamaha Motor Corporation, established in 1955, is a leading manufacturer of motorcycles, marine products, and other motorized vehicles, known for innovation and performance.

Br250F Lineage:

Part of Yamaha's range of versatile dual-purpose motorcycles, building on smaller displacement enduro and trial bikes. The BR250F likely succeeded earlier models and was part of a generation of 250cc dual-sports.

Production Years Estimate:

Mid-to-late 1980s (specific production range to be confirmed by internal Yamaha data).

Manufacturing Location:

Japan (typical for Yamaha motorcycles of this era).

🏆 Awards & Recognition

Model Specific Awards:

No specific widely publicized awards found for this model, but generally praised for reliability and versatility in its class.

Customer Satisfaction:

Typically high among owners for its durability and practical performance.

Emissions Certification:

Would have met emissions standards of the era applicable to its market of sale.