1980 Yamaha YZ465 Service and Repair Manual

LIT-11626-01-85 is a two-model book. Yamaha wrote it for the 1980 YZ465, code YZ465G, and included the YZ250 of the same year in its pages.

For a machine of this age the original figures are the point. The engine sections give piston and bore dimensions, clutch and transmission procedures, and the sequence for splitting the cases. Carburetor settings and ignition timing appear as specified when the bike left the factory, which is the baseline a restoration works back to.

Chassis material covers fork and shock service, wheel and brake work, and the torque values for frame and engine fasteners.

Confirm YZ465G against the frame stamping before you commit to any specification. Forty-odd years of repairs and swapped parts mean the code matters more on a bike like this than on anything current, and LIT-11626-01-85 is the number to quote.