1981 Yamaha G1 (CARB 2-STROKE) Service and Repair Manual

The 1981 carbureted G1 appears in Yamaha's records as model code G1-A2, documented in the shop manual issued under part number LIT-11616-G1-AE.

Three model years and seven variants share this book, which is how the factory handled the early G1. Carbureted cars from the G1-A through the G1-A2 and the electric G1-E and G1-E2 are all inside, so the chassis work common to them is described once and the drivetrain sections split where they must.

For the two-stroke car the useful material is the engine section: carburettor settings, ignition timing and checks, piston and cylinder service limits, and the clutch and belt drive. Around that sit brake, axle and steering procedures with tightening torques, the maintenance intervals Yamaha set, and the complete wiring diagram for tracing a starting or charging complaint back to its cause.