1971 Yamaha CT3 Service and Repair Manual

The 1971 CT3 carries the code CT3, and Yamaha's service manual for it is LIT-11613-14-01.

Written for 1971 through 1973, the volume also covers the AT1, AT2, AT3, CT1, CT1C, CT2, LT2 and LT3. That grouping is deliberate: the machines share their fundamental layout, so Yamaha produced one reference and marked the places where a model needs its own figure or its own step.

Chapters run through periodic maintenance, engine and transmission overhaul with the inspection limits needed to judge wear, carburettor and ignition specifications, torque values, wiring diagrams and troubleshooting. For anyone working through a fifty-year-old two-stroke, the value lies in those numbers, because the parts on the bench are rarely all original. Check the CT3 code first.