1978 Yamaha DT125 Service and Repair Manual

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Yamaha wrote LIT-11616-DT-17 for the 1978 and 1979 DT125 and DT175, and the machine here is the 1978 DT125, model code DT125E.

Because the two displacements share the book, the text names the model wherever a specification differs, and those differences matter most in the engine and carburettor sections. Read the callouts rather than the general heading.

Scope is the full shop treatment: periodic maintenance and adjustment, engine removal, dismantling and reassembly with inspection limits and clearances, fuel and ignition specifications, front end, brake and rear suspension procedures, torque tables, wiring diagrams and troubleshooting. Confirm the DT125E code on your frame against the fitment before ordering.

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