1980 Yamaha CHAPPY Service and Repair Manual

Code LB50PG identifies the 1980 Chappy. Its factory service manual is LIT-11616-01-11, which Yamaha wrote for the 1979 to 1982 machines as a group.

What the book gives you

• Maintenance intervals and adjustment values
• Engine teardown, inspection limits and assembly order
• Carburettor and ignition specifications
• Torque figures and wiring diagrams
• Troubleshooting arranged by symptom

Four years of production sit in these pages, so where 1980 differs from 1979 or from the later machines the text says which one it is describing. Check the LB50PG code stamped on your machine and read the sections that name it.

The tone throughout is that of a dealer service document. It states a value, tells you how to measure it, and moves on, which is the reason this literature is still worth having on a bench forty years later.