BXT1900F-AP is the hull code on a 2024 SX250, and LIT-18616-04-41 is the Yamaha service manual written for it.
Coverage runs 2024 through 2026 and includes the 252S, 252SD, 252SE, 252XE and AR250. These boats sit on shared architecture, so the factory documented the group rather than the individual model.
Inside, each system is taken in turn with its specifications and torque values at the front, followed by removal, inspection and installation steps in the order Yamaha intends. Wiring diagrams are complete enough to trace a circuit without guessing, and the diagnosis sections are organised by the symptom rather than by the part that might be at fault.
Confirm BXT1900F-AP against your hull identification plate before ordering, and check it once more against the application list when you open the book.
