For the final year of this series, the 1973 LT3 is served by the same factory book as its predecessors: Yamaha part number LIT-11613-14-01, with the machine identified as model code LT3.
Coverage
Three model years sit in these pages, 1971 through 1973, together with the AT1, AT2, AT3, CT1, CT1C, CT2, CT3 and LT2. That breadth is deliberate. Yamaha documented the shared engine and chassis work once and then flagged the points where an individual model needs different handling, so the LT3 sections read against a common baseline.
Expect the content a dealer technician relied on rather than an owner's handbook: measured clearances, torque specifications, the sequence for taking an assembly apart and putting it back correctly, adjustment settings, wiring diagrams and structured troubleshooting. Verify the LT3 code on your machine before you work to any figure in it.
