1979 Yamaha CHAPPY Service and Repair Manual

From 1979 the Chappy ran on a different service book, LIT-11616-01-11, written to cover the 1979 through 1982 model years. The 1979 machine is coded LB50PF.

Four model years in one volume means the chapters are arranged by system with the year-to-year differences flagged where they matter. That is helpful on a machine this old, where parts have often been swapped between years and the manual is what settles what belongs.

The content is Yamaha's own workshop material: periodic maintenance, engine dismantling and reassembly with inspection limits, carburettor and ignition specifications, chassis and brake procedures, torque figures, wiring diagrams and troubleshooting. Confirm the LB50PF code on your Chappy against the fitment before ordering.