A 1979 TT500 carries the code TT500F. Its service reference is LIT-11616-01-50, the volume Yamaha wrote to cover the TT500, SR500 and XT500 across the 1976 to 1981 model years.
Machines of this vintage rarely stay original. Components migrate between years and between the three models, and that is precisely where a combined reference earns its place: whatever is actually bolted to your bike, its specification is likely in the same book.
The procedures are the factory's, in the factory's order. Engine work, wear limits, torque figures, fuel and ignition settings, suspension and brake service, and the wiring drawn as the bike was built.
Confirm LIT-11616-01-50 and the TT500F code stamped on the frame, then you can rely on what you read.
