1980 Yamaha LC50 Service and Repair Manual

Code LC50G, part number LIT-11616-02-11. That is the 1980 LC50 and its factory service manual, published for the single model year.

Verify the code on the frame plate; with it matched, every figure in the book applies to your machine directly.

The manual gives engine work in the order a technician performs it, with the inspection limits used to judge whether parts are still within specification and the torque values for reassembly. Carburettor and ignition settings are factory figures. Chassis coverage takes in suspension, brakes, wheels and controls.

Electrical service is built around the wiring diagram, with the test readings needed to check components rather than replace them speculatively. Diagnosis is arranged by symptom at the end.

For a small Yamaha of this period, this book is usually the most complete technical record still available.