1981 Yamaha CHAPPY Service and Repair Manual

Owners of a 1981 Chappy want Yamaha part number LIT-11616-01-11. The machine's code is LB50PH, and the manual covers the 1979, 1980, 1981 and 1982 model years.

It reads as a shop document. Engine work is laid out in sequence with the wear limits needed to judge each part, the fuel and ignition figures are tabulated, chassis and brake procedures are given step by step, and the wiring diagrams let you trace a circuit instead of guessing at it. Torque specifications appear where fasteners matter.

One check before ordering: confirm LB50PH against the code on your own Chappy, because Yamaha moved the code on almost every year of this run.