🏷️ Basic Information

Make:

Yamaha

Model:

BR250

Year:

1988

Model Generation:

First Generation (1988-1996, though specific model year details are for 1988)

Chassis Code:

BC1

👋 Introduction

Target Audience:

Professional technicians and experienced DIY enthusiasts seeking detailed repair and maintenance information

Manual Value Proposition:

Provides same in-depth information as professional technician manuals, enabling comprehensive self-service and restoration

Instructional Clarity:

Numbered steps, bold figure references, detailed illustrations, inset diagrams for clarity

Information Organization:

Numbered table of contents for quick information retrieval, combined electrical diagnostics and wiring diagrams

Delivery:

Instant Download

Shipping Cost:

None

📋 Manual Details

Primary Coverage:

Full Service, Repair, Maintenance, Rebuild, Refurbishment, Restoration

Estimated Page Count:

Comprehensive (exact count not provided, but implies extensive detail)

Type:

Full Service Repair Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Engine:

Complete overhaul, diagnostics, tuning, lubrication, cooling system

Fuel System:

Carburetor(s) disassembly, cleaning, adjustment, fuel tank, fuel lines

Ignition System:

CDI, spark plugs, timing, electrical components

Transmission:

Gearbox disassembly, inspection, lubrication, shifting mechanisms

Drivetrain:

Chain, sprockets, rear wheel hub

Brakes:

Front and rear brake systems, hydraulic lines, master cylinder, calipers, brake pads/shoes

Suspension:

Front forks (oil, seals, springs), rear shock absorber, linkage

Steering:

Handlebars, triple clamps, steering stem bearings

Electrical System:

Wiring diagrams, lighting, battery, charging system, switches, sensors

Bodywork:

Frame, body panels, seat, fenders, graphics

Maintenance:

Scheduled maintenance, oil changes, filter replacements, chain lubrication, tire pressure checks

Troubleshooting:

Systematic diagnostics for common and uncommon issues, symptom-based troubleshooting

Repair:

Component-level repair and replacement procedures for all major systems

Rebuilding:

Detailed instructions for rebuilding major components like the engine and transmission

Diagnostics:

Comprehensive diagnostic procedures, including electrical system diagnosis

Depth:

Professional-level detail suitable for technicians and advanced DIY mechanics, covering full rebuilds and complex diagnostics

📊 Manual Specifications

Format:

PDF

Compatibility:

All Windows and Mac versions

Printability:

Fully printable, all pages

Binding Description:

Digital (no physical binding)

Paper Description:

Digital (no physical paper)

Reader Requirement:

Adobe PDF Reader

Extraction Requirement:

WinRAR (for unzipping the downloaded file)

⚙️ Engine Specifications

Engine Type:

Air-cooled, 4-stroke, SOHC, parallel-twin

Engine Displacement:

233 cc (exact displacement may vary slightly by specific sub-model, typically around 233cc for BR250)

Bore X Stroke:

54.0 mm x 50.6 mm (typical for this engine family)

Compression Ratio:

9.2:1 (typical)

Horsepower:

Approx. 20-23 PS (14.7-16.9 kW) @ 8,000 RPM (estimated, specific dyno figures vary)

Torque:

Approx. 1.8-2.0 kg-m (17.7-19.6 Nm) @ 7,000 RPM (estimated)

Carburetor Type:

Dual Mikuni VM24SS or similar

Fuel Type:

Unleaded gasoline, octane rating of 86 or higher recommended

Oil Type:

Yamalube 4 (or equivalent API SE, SF classification) SAE 10W-30, 10W-40, or 20W-40 motorcycle oil

Oil Capacity:

1.8 L (with oil filter change)

🔧 Transmission

Transmission Type:

5-speed constant mesh

Gear Ratios:

1st: 2.750, 2nd: 1.875, 3rd: 1.381, 4th: 1.125, 5th: 0.917 (typical, subject to variation)

Optional Gearbox:

N/A

Clutch Type:

Wet, multi-disc

Final Drive:

O-ring sealed chain, 520 pitch

Transmission Oil:

Yamalube SAE 80 API GL-4 or equivalent

Transmission Oil Capacity:

0.55 L

📐 Dimensions

Overall Length:

2,080 mm

Overall Width:

770 mm

Overall Height:

1,130 mm

Wheelbase:

1,380 mm

Dry Weight:

138 kg

Wet Weight:

151 kg (estimated, with all fluids)

Load Capacity:

Typically 1 rider + moderate luggage. Consult manual for specific limits.

🛡️ Safety Features

Safety Standards:

Designed to meet relevant safety regulations for motorcycles of its era

Braking System:

Front: Hydraulic disc, Rear: Drum brake

Tires Front:

3.00-21 4PR

Tires Rear:

120/90-17 64P

Lighting System:

Halogen headlight, taillight, turn signals

💡 Technology Features

Infotainment Features:

N/A (basic motorcycle instrumentation)

Driver Assistance Systems:

N/A

Connectivity Features:

N/A

Dashboard Features:

Speedometer, Odometer, Tachometer, Indicator lights (turn signals, high beam, neutral, oil pressure)

🔧 Maintenance

Oil Change Interval:

Every 3,000 km or 6 months (recommendation, consult manual for exact)

Air Filter Cleaning:

Every 1,000 km or as needed based on riding conditions

Spark Plug Inspection:

Every 3,000 km, replace as needed

Chain Lubrication And Adjustment:

Every 500 km or as needed

Fork Oil Type:

Yamaha Suspension Oil (or equivalent SAE 10W)

Fork Oil Quantity:

139 ml per fork leg (typical, check manual)

Common Wear Items:

Carburetor internal wear, fork seal leaks, clutch wear, stator failure (common on older bikes)

Electrical Gremlins:

Wiring harness degradation over time, especially at stress points. Ensure proper grounds.

Carburetor Issues:

Can become clogged with age, requiring thorough cleaning and re-jetting if modifications were made.

📚 Vehicle History

Brand Focus:

Yamaha is renowned for its high-performance motorcycles, musical instruments, and marine products, with a strong history in motorsports.

Br250 Lineage:

The BR250 was part of Yamaha's range of versatile dual-sport or 'scrambler' style motorcycles, designed for both on-road and light off-road use. It offered a balance of manageable power and practical features.

Production Period:

1988-1996 (model covered is the 1988 iteration)

Manufacturing Location:

Likely Japan (common for Yamaha motorcycles of this era)

🏆 Awards & Recognition

Industry Awards:

N/A (Specific awards not commonly documented for individual model years of this type of motorcycle)

Reliability Reputation:

Yamaha generally has a strong reputation for reliability, especially for their 4-stroke models of this era, provided regular maintenance is performed.

Regulatory Compliance:

Built to comply with manufacturing and emissions standards of its time.