1985 Yamaha TRI-MOTO 125 Service and Repair Manual

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Last year of the Tri-Moto 125, and the same reference still applies. LIT-11616-YT-02 runs from 1982 to 1985, and the 1985 machine wears model code YT125N.

Working on the final season of a model has its own quirks: late changes do not always appear in earlier literature. Here they do, because Yamaha kept updating this one volume rather than starting a new one, so the tables show the 1985 values alongside the earlier ones.

The service content is what a dealer bay ran on. Maintenance schedules with the adjustments written out. Engine and gearbox overhaul with clearances, wear limits and tightening sequences. Carburetion and ignition specifications. Electrical testing. Chassis repair covering steering, suspension, wheels and brakes. Wiring diagrams and troubleshooting tables.

Confirm YT125N on the frame, note the part number, and follow the printed order of operations instead of improvising a sequence.

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