2006 Yamaha YZ125(W)/W1 Service Manual

Inside the 2006 Yamaha YZ125 Service Manual

• Covers the 2006 Yamaha YZ125, including YZ125W and YZ125W1 variants
• Original OEM publication P/N 1C3-28199-32, first edition May 2006
• Contains 550 pages of technical specifications, exploded-view diagrams, and maintenance tables
• File link appears in your order confirmation straight away
• OCR text layer lets you jump to a torque spec by keyword
• This 1st edition is the reference used for the 2006 model year launch, documenting all essential chassis and engine setup configurations

Documented Maintenance and Technical Scope

This manual provides a detailed look at the 2006 Yamaha YZ125 motocross machine. The documentation covers general information, maintenance specifications, and regular inspection procedures for both the chassis and the 2-stroke engine. Readers will find structural details including frame construction and engine mounting, along with exploded-view diagrams for disassembly and reassembly tasks.

Specification Highlights and Reference Data

The documentation includes comprehensive maintenance tables with torque values provided in Nm, m-kg, and ft-lb. Engine performance is supported by data on compression ratios, cooling system capacities, and fuel mixture requirements. The factory workshop documentation structure details electrical component testing, including source and pickup coil resistance. Cylinder head bolt torque values are documented at 28 Nm for the 5-stud configuration. Coolant system capacity is specified at 0.56 L. The ignition coil primary winding resistance is documented at 0.24–0.36 ohms. All service data shown here is for reference only — qualified technicians and the original OEM documentation remain the authoritative source for any hands-on work. An official 550-page Yamaha OEM service publication covering the 2006 YZ125, documenting engine, chassis, electrical, and fuel-mixing specifications for the 1C3-series build.