1974 Yamaha TRIALS Service and Repair Manual

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Trials is a category rather than a model name, so the code does the identifying here: TY250A, model year 1974. The factory manual is LIT-11624-34-00, written for that year alone.

Yamaha produced several TY models in different capacities, and their manuals are not interchangeable. Checking the code against the part number is the only way to be certain, particularly since surviving machines have often been modified for competition.

Inside

Torque specifications, service and wear limits, disassembly and reassembly in the factory's own order, wiring, and fault-finding.

For a bike built to be crashed, repaired and ridden again, the tolerance tables are what keep a rebuild honest. Confirm TY250A and LIT-11624-34-00 before you order.

Wiring on a machine this spare is brief, but it is drawn complete, which helps when looms have been cut down for competition.

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