Code SR500D belongs to the 1977 machine. Its service data sits in LIT-11616-01-50, the volume Yamaha wrote to cover the SR500 together with the TT500 and XT500 from 1976 through 1981.
Owners of these singles often end up working across the family, and the factory anticipated that. Specifications for all three models are tabulated side by side, so a part of uncertain origin can still be measured against the right figure.
Expect the original workshop material rather than a rewrite: torque values at each fastener, clearance and service limits, disassembly and reassembly in the intended order, complete wiring diagrams, and fault-finding that starts from the symptom. Check the code on your frame plate against SR500D before you order.
Sections are arranged by assembly, so a top-end job stays within a few pages.
