2026 Yamaha YZ125X Service and Repair Manual
Yamaha assigned part number LIT-11626-39-09 to the 2026 YZ125X service manual. The bike is model code YZ125XT, and the volume is specific to that year.
Everything in it comes from the factory rather than from observation of the bike after the fact. The maintenance chapter gives intervals and methods, the engine chapters give disassembly and assembly order with torque figures, the inspection steps give what to measure and where the limit lies, and the electrical chapter includes the wiring diagram. Fuel, ignition and suspension specifications sit with the assemblies they belong to.
Two checks before ordering. Read YZ125XT off the frame label to confirm the year and model, and remember the cross-country X and the motocross YZ125 are documented separately, so the part number matters as much as the name.