A 2025 SX220 is coded HLT1050B-AAP, and its factory service manual carries part number LIT-18616-04-29.
Yamaha wrote the book to span 2023 through 2026 and to serve the 222S, 222SD, 222SE, 222XD, 222XE and AR220 as well. Anyone running a mixed fleet of these boats works from one reference rather than several.
How it is organised
Sections follow the boat's systems. Each begins with specifications and tightening torques, then walks through removal, inspection, measurement and installation. Electrical chapters carry full wiring diagrams and the tests that go with them. Troubleshooting is written from the symptom backwards, which is the direction a real fault presents itself.
Confirm the code HLT1050B-AAP on your hull plate. With that and the part number verified, the specifications you follow are the right ones.
