1976 Yamaha RD125 Service and Repair Manual

The model code to match here is RD125C. That is the 1976 designation, and it appears throughout the specification columns of LIT-11616-10-12, the Yamaha part number carried by this manual.

One book was written for two model years and two displacements. Alongside the 1976 RD125C you will find the 1975 machines and the RD200 covered in the same chapters, which is normal for the period and means the procedures are shared while the figures are split out per code.

Content runs the way a factory manual does: periodic maintenance intervals first, then engine removal, top end, crankshaft and gearbox, then the chassis. Carburettor tuning, ignition timing, clutch adjustment, brake service limits and the electrical schematic all sit where a technician would expect them.

If the previous owner left no paperwork, the frame stamping and the RD125C code are the two things worth confirming before you start ordering parts against these pages.