2026 Yamaha YZ250 70TH ANNIVERSARY EDITION Service and Repair Manual

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Coded YZ250TSE, the 2026 YZ250 70th Anniversary Edition takes its service information from LIT-11626-39-07, which Yamaha also published for the standard 2026 YZ250. Nothing about the commemorative bodywork alters the procedures.

Owners get the whole two-stroke sequence: measuring bore and piston, decarbonising and timing the power valve, clutch replacement, crank and transmission rebuild inside split cases. Carburetor jetting reference and ignition checks are the factory figures.

Beyond the engine

  • Fork and shock teardown with oil quantity and assembly order
  • Brake, wheel and bearing service
  • Torque tables for frame, swingarm and engine mounts
  • Wiring diagram with fault-tracing charts

One fitment note worth the trouble: find the model code on the frame sticker and confirm YZ250TSE. Combined with the part number above, that tells you the book on your bench is the one Yamaha wrote for your machine.

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