Production Years Covered:
1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990
Vehicle Segment:
Lightweight Motorcycle (likely a dual-sport or trail bike based on model name)
Competitors:
Honda XR series, Kawasaki KLR series, Suzuki DR series (for similar displacement and era)
Manual Benefit:
Enables cost savings on labor by facilitating DIY maintenance and repairs.
Manual Format Advantage:
Digital format allows printing specific sections, avoiding damage to the original manual.
Primary Focus:
Workshop Service and Repair
Target Audience:
Professional Technicians and DIY Mechanics
Estimated Pages:
Hundreds (specific count not provided, but stated as comprehensive)
Type:
Workshop Service Manual / Repair Manual / Factory Service Manual
Alternative Names:
Service Manuals, Workshop Manuals
Engine:
Detailed overhaul, diagnostics, tuning, lubrication, cooling system
Transmission:
Clutch operation, gear shifting mechanisms, lubrication
Electrical:
Wiring diagrams, ignition system, lighting, charging system, starting system, troubleshooting
Fuel System:
Carburetor specifications, adjustment, cleaning, fuel tank, fuel lines
Chassis:
Frame inspection, suspension components, steering system, wheel bearings
Brakes:
Brake system maintenance, bleeding, component inspection
Bodywork And Trim:
Panel removal/installation, seat, fenders, handlebars
Maintenance:
Periodic maintenance charts, lubrication schedules, filter replacement, spark plug service
Repair:
Step-by-step repair instructions for all major components and systems
Overhaul:
Detailed engine and component overhaul procedures
Troubleshooting:
Diagnostic procedures for common and uncommon issues, symptom-based troubleshooting
Wiring Diagrams:
Comprehensive wiring diagrams included for electrical system troubleshooting and repair.
Depth:
Comprehensive, suitable for professional technicians and advanced DIYers
Accuracy:
Original manufacturer data, highly accurate
Diagnostic Tools:
Information on using common tools for diagnosis and repair.
Type:
Internal Combustion, likely 4-stroke single-cylinder (common for this class and era)
Displacement:
Approximately 250cc (based on model name BR250)
Cooling System:
Likely Air-Cooled (common for off-road/dual-sport bikes of this era)
Horsepower:
Estimated 20-25 HP (typical for 250cc class in the 1980s)
Torque:
Not specified, but expected to be torque-biased for low-end grunt.
Carburetor:
Single Carburetor, likely Mikuni VM or similar (specific model not stated, but details are in the manual)
Fuel Type:
Unleaded gasoline
System:
CDI (Capacitor Discharge Ignition) or similar electronic ignition system
Overall Length:
Not specified, but typical for dual-sport bikes of the era.
Seat Height:
Not specified, but designed for off-road usability.
Dry Weight:
Estimated 110-120 kg (typical for 250cc dual-sport).
Fuel Tank Capacity:
Not specified, but likely around 8-12 liters.
Crash Test Results:
N/A for motorcycles of this era.
Brakes:
Front drum brake, Rear drum brake (typical for early 80s models; later models might have disc front).
Lighting:
Headlight, taillight, turn signals (as per regulations of the time).
System:
Basic analogue instrumentation (speedometer, tachometer, odometer, indicator lights).
Features:
N/A for this era of motorcycle.
Features:
N/A for this era of motorcycle.
Oil Change:
Every 3,000-5,000 km or annually (specifics in manual)
Air Filter:
Inspect every 3,000 km, clean/replace as needed
Spark Plug:
Inspect every 6,000 km, replace as needed
Engine Oil Type:
Yamalube 4-stroke motorcycle oil, SAE 10W-30 or 20W-40 (API SE, SF, SG or JASO MA rated) - refer to manual for precise grade.
Transmission Oil Capacity:
Not specified, but typically integrated with engine oil or separate small quantity.
Brake Fluid:
DOT 3 or DOT 4 (if hydraulic disc brakes are equipped, otherwise drum brake fluid)
Carburetor Fouling:
Common issue in older bikes due to fuel degradation or dirt ingress.
Electrical Connections:
Corrosion or loose connections can lead to intermittent electrical issues.
Suspension Seals:
Wear and tear on fork seals can result in oil leaks.