2005 Yamaha YBR125 Service Manual

2005 Yamaha YBR125 Service Manual Content Preview

• Covers 2003–2005 Yamaha YBR125 (JYM125/125-2) motorcycle variants with 123cc air-cooled SOHC engine configuration
• Official OEM publication, Chongqing Jianshe-YAMAHA Motor Co., Ltd. first edition, January 2003
• Contains 78 exploded-view diagrams and 31 technical specification tables
• Downloads to your account within seconds of checkout
• Your order stays downloadable from your account for life
• Indexed PDF search covers every chapter and appendix
• Full-text search finds any part number in seconds
• This first edition serves as the original baseline document for all subsequent JYM125 chassis and engine revisions

Technical Documentation Scope

The 2005 Yamaha YBR125 service manual organizes its technical content through 8 distinct chapters. Early sections define motorcycle identification codes and provide a safety-focused guide to maintenance, including requirements for specialized tools and correct fastener handling. The middle chapters transition into detailed mechanical teardowns, covering engine disassembly, carburetor management, chassis inspections, and electrical system diagnostics. The final section serves as a troubleshooting index to identify faults within the engine, compression, and intake systems.

Specification Highlights

The 2005 Yamaha YBR125 specifications section provides critical data for engine and chassis setup. Standard valve clearance for the intake is listed at 0.08–0.12 mm in the cylinder head specification table. Compression pressure is documented at 1200 KPa (12 kg/cm2) for the YBR125 engine. The factory workshop documentation includes torque settings for over 50 individual components, such as the cylinder head bolts specified at 22±2 Nm. Electrical system data, including A.C. magneto specs and standard bulb wattage for headlight and signal lamps, is integrated into the specification reference. This manual is a definitive 73-page OEM technical document providing essential service data for the YBR125 motorcycle series, documenting engine, chassis, and electrical specifications for the JYM125-2 build.