2026 Yamaha GP1900 HO w/ audio Service and Repair Manual

For the 2026 model year the GP1900 HO w/ audio carries model code GP1900A-CA. Yamaha's service coverage for it comes under LIT-18616-04-37, a single book that also serves the 2024 and 2025 craft and the GP1900 HO without audio.

Inside

• Step-by-step engine and pump service with measurement limits
• Torque specifications, sealants and thread-locking notes
• Troubleshooting charts for starting, running and charging faults
• Complete wiring diagrams

Because one publication spans three years and both audio variants, the text notes where parts or procedures differ between them; read those notes against your own code rather than assuming. Anyone keeping records on a craft still under warranty will also find the maintenance schedule laid out by hours and months, which is the part most owners guess at.