Yamaha wrote a single service volume for the 190 and 195 series sport boats and kept it current from 2019 all the way through 2026. Its number is LIT-18616-03-87, and a 2020 SX190 with the model code TX1800B-V falls squarely inside it.
The other boats documented in the same book are the AR190, AR190 California, AR195, SX190 California and SX195. A long coverage span like that is normal when a platform carries forward with few changes, and the manual flags the year-to-year differences where they matter.
Content
Engine and jet pump overhaul, hull and deck hardware, fuel system, cooling, steering and the complete electrical schematics, plus the torque tables and troubleshooting charts a technician works through in order. Check TX1800B-V against your own plate before buying so you know the coverage lines up.
