The 2026 FX Limited SVHO with audio is coded FX1800A-C, and Yamaha documents it in service manual LIT-18616-04-16.
That volume spans 2022 to 2026 and covers nine related FX craft, from the Cruiser HO through the SVHO variants in standard and audio-equipped form. It is the single reference Yamaha maintained for the generation rather than a separate book per trim.
Work you can do with it includes rebuilding the jet pump to factory clearance, servicing the supercharged engine with correct torque at every fastener, tracing the electrical system including the audio wiring through complete schematics, and diagnosing a running fault using the factory charts instead of by substitution.
One caution worth repeating: several codes inside this book differ from FX1800A-C by a single character. Read the plate on your own craft before ordering so the specifications you rely on are actually yours.
