Engine Code:
Likely P531 (common for YBR125 in this era, specific code not provided)
Production Years Covered:
2005, 2006, 2007, 2008, 2009, 2010
Target Audience:
Professional motorcycle technicians, DIY mechanics, and owners seeking in-depth knowledge for maintenance and repair.
Value Proposition:
Provides factory-level repair and maintenance information, enabling cost savings on labor by empowering owners to perform tasks themselves.
Manual Authority:
Written by manufacturers (Yamaha), offering the most accurate and complete information available.
Accessibility:
Instant download provides immediate access without shipping delays or costs.
Usability:
Designed for ease of use with clear instructions and detailed diagrams.
Primary Systems:
Engine, Fuel System, Ignition System, Lubrication System, Cooling System, Transmission, Clutch, Chassis, Suspension (Front & Rear), Braking System (Front & Rear), Electrical System, Lighting System, Instruments, Frame, Bodywork, Wheels & Tires
Maintenance Procedures:
Periodic maintenance charts, oil changes, filter replacements, spark plug service, chain adjustment, brake fluid flush, coolant checks, tire pressure checks, lubrication points
Repair Procedures:
Engine overhaul (cylinder, piston, valve train, crankshaft), transmission repair, clutch replacement, carburetor cleaning/rebuilding, suspension fork overhaul, brake caliper service, electrical component troubleshooting and replacement, body panel repair/replacement
Troubleshooting:
Step-by-step diagnostic procedures for common and uncommon issues, symptom-based troubleshooting guides
Depth Of Coverage:
Comprehensive, covering routine maintenance to complete engine and component rebuilds. Suitable for professional technicians and advanced DIY mechanics.
Diagnostic Information:
Includes detailed diagnostic procedures and troubleshooting flowcharts for electrical and mechanical systems.
Wiring Diagrams:
Comprehensive electrical wiring diagrams included, aiding in electrical system diagnostics and repairs.
Printable:
Yes, full printable
Zoom Functionality:
Yes, zoom in/out capability
Searchability:
Likely searchable text content within the PDF
Page Quality:
High-resolution, allowing for clear viewing of diagrams and text.
Delivery Method:
Instant Download (no physical product)
Digital Format Advantage:
Print only necessary pages, avoiding damage to the original manual in messy workshop environments.
Engine Type:
Four-stroke, SOHC, air-cooled
Displacement:
124 cc (Cubic Centimeters)
Bore X Stroke:
54.0 mm x 54.5 mm (typical for YBR125)
Compression Ratio:
9.6:1 (typical for YBR125)
Horsepower:
Approx. 10-11 PS (Pferdestärke) at around 7,500 RPM (specific to model/market, manual will confirm)
Torque:
Approx. 9.6-10 Nm at around 6,000 RPM (specific to model/market, manual will confirm)
Fuel Delivery:
Carburetor (specific model such as VM20 or similar, confirmed in manual)
Fuel Type:
Unleaded gasoline
Ignition Type:
CDI (Capacitor Discharge Ignition)
Overall Length:
Approx. 2005 mm (typical for YBR125)
Overall Width:
Approx. 745 mm (typical for YBR125)
Overall Height:
Approx. 1045 mm (typical for YBR125)
Wet Weight:
Approx. 120-126 kg (depending on specific variant and fluids, manual will confirm exact)
Fuel Tank Capacity:
Approx. 13 liters (manual will confirm exact)
Safety Features General:
Designed to meet relevant motorcycle safety standards for its era. Manual provides detailed safety precautions for servicing.
Braking System:
Front: Disc brake; Rear: Drum brake (specifications for bore, pad material, fluid type detailed in manual)
Lighting:
Headlight, taillight, brake light, turn signals (bulbs types and troubleshooting in manual)
Instrument Cluster:
Analog speedometer, tachometer (on some variants), fuel gauge, odometer, trip meter, indicator lights (manual details function and troubleshooting)
ABS:
No Anti-lock Braking System (ABS) typically featured on this model.
Charging System:
12V electrical system powered by a stator and managed by a rectifier/regulator, supporting lights and ignition.
Oil Change Interval:
Typically every 3,000-6,000 km or 6-12 months, as specified in the manual.
Air Filter Cleaning:
Recommended at intervals of 4,000-8,000 km, depending on operating conditions.
Spark Plug Replacement:
Typically every 10,000-12,000 km, manual will specify type and gap.
Engine Oil Type:
Yamalube 4 (or equivalent API SE, SF, SG, SH, SJ, SL or JASO MA specification) SAE 10W-40 or 20W-40 (manual to confirm exact viscosity and API/JASO rating)
Engine Oil Capacity:
Approx. 1.0 - 1.2 liters without filter change, 1.2 - 1.4 liters with filter change (manual to confirm exact)
Brake Fluid Type:
DOT 3 or DOT 4 (manual to confirm specific type)
Coolant Type:
Ethylene glycol based coolant, pre-mixed 50/50 with deionized water (manual to confirm exact type and ratio)
Common Wear Items:
Clutch plates, brake pads/shoes, chain and sprockets, tires, spark plug, air filter.
Carburetor Issues:
Clogging due to fuel deposits, requiring cleaning and adjustment, especially if the motorcycle sits for extended periods.
Electrical Issues:
Corroded connections, faulty stator or rectifier/regulator are potential points of failure over time, all detailed in the manual.
Manufacturer History:
Yamaha Motor Company is renowned for its long history of producing reliable and innovative motorcycles across various segments.
Ybr125 Introduction:
The YBR125 was introduced as an accessible and economical commuter motorcycle, popular in many global markets for its reliability and low running costs.
Manufacturing Locations:
Primarily manufactured in various Yamaha plants, including those in Asia (e.g., India, Indonesia) for global distribution.
