1981 Yamaha TT250 Service and Repair Manual

The 1981 TT250 is code TT250H, and its service documentation is Yamaha part number LIT-11616-01-92. That single book was written to serve 1980, 1981 and 1982 together.

Why the part number matters

Manuals for bikes of this era circulate in many reprints and rewrites of varying quality. Checking the number tells you the procedures came from Yamaha rather than from someone's recollection of them, which is the difference between a torque figure you can trust and one you cannot.

Inside are the engine and chassis procedures in factory sequence, inspection and wear limits, carburettor and ignition specifications, and the original wiring diagrams. Fault-finding is organised by symptom.

Confirm the frame code reads TT250H before you order, since the three covered years are distinguished in the text by exactly that.