1981 Yamaha IT465 Service and Repair Manual

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Owners of the 1981 IT465, code IT465H, need LIT-11626-02-56. Yamaha wrote that book for the 465 and the IT250 together, the two machines being close enough in construction to share one service reference.

Read IT465H off the frame plate first. The specification pages separate the models wherever their figures differ.

Engine chapters follow the factory sequence from removal through inspection to reassembly, with the service limits that decide whether a bore, piston or bearing is still usable, and the torque values for building it back up. Carburation and ignition timing are specified.

Suspension, brake and wheel procedures are all present, and the electrical section combines the wiring diagram with the tests for the components on it. Diagnosis works from symptoms, which suits a big-bore two-stroke that has had a long and probably undocumented life.

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