1973 Yamaha DT2 Service and Repair Manual

By 1973 the DT2 was still being serviced from LIT-11613-08-01, a factory volume that reaches across three model years and six designations: DT1, DT2, DT3, RT1, RT2 and RT3, for 1971 through 1973.

Your frame code is DT2. That is the reference point for everything in the book, and where the machines in the volume differ the specifications are listed per model rather than averaged.

The engine sections give removal, inspection and reassembly with the measurement limits that tell you what is worn out. Torque figures are specified. Carburation and ignition are set to factory values. Chassis chapters handle suspension, brakes and wheels. The electrical section pairs the wiring diagram with the tests needed to check a coil, switch or generator properly.

Diagnosis at the back works from symptoms, which is where most work on a fifty-year-old two-stroke actually starts.