2020 Yamaha 275SD Service and Repair Manual
Look for FPT1800A-V. That is the model code for the 2020 275SD, and its factory service manual is LIT-18616-03-95.
An unusually broad book
Yamaha kept this manual current from the 2019 model year through 2026, and used it for the 275E and 275SE as well. Nine model names and years are not usually gathered this way; the factory did it because the platform stayed consistent, and the text separates the models where their specifications do.
You get removal and installation in factory sequence, published torque and clearance data, service limits for judging wear, complete wiring diagrams, symptom-based diagnostic procedures, and maintenance intervals by hours and season.
With this much coverage in one volume, the model code does real work. Confirm FPT1800A-V before ordering any part.