1984 Yamaha TRI-MOTO 125 Service and Repair Manual

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The 1984 Tri-Moto 125, model code YT125L, is documented in Yamaha part number LIT-11616-YT-02.

That book spans 1982 to 1985. On a machine this old the shared coverage tends to be the useful part rather than a drawback, since components move between years and the year-keyed tables let you identify what you are actually holding.

  • Inspection intervals and adjustment procedures as Yamaha set them
  • Engine and transmission teardown, measurement and reassembly
  • Service limits and torque figures in table form
  • Carburetor and ignition specifications
  • Electrical testing with expected readings
  • Steering, suspension, wheel and brake repair
  • Wiring diagrams and troubleshooting charts

Match YT125L to the code on your frame before you use any of it. The manual is precise about which year a figure belongs to, and following the wrong column on a small two-stroke three-wheeler is an expensive kind of mistake.

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