2022 Yamaha YZ125X Service and Repair Manual

The YZ125X is its own machine in Yamaha's documentation, and the 2022 model, code YZ125XN, has a service manual of its own: part number LIT-11626-35-18.

That distinction is worth respecting. The cross-country bike is not covered by the motocross YZ125 manual of the same year, so a book bought on displacement alone can be the wrong one. Read the frame label, and if it says YZ125XN this is the volume.

Content follows the factory pattern. Periodic maintenance with intervals and methods, engine disassembly and assembly in sequence, inspection steps with the service limit printed alongside, torque specification tables, carburation and ignition settings, suspension figures, and the wiring diagram for the harness as built. On a bike ridden in rough country, the chassis and suspension chapters see as much use as the engine ones.