2025 Yamaha UMAX 2 EFI Service and Repair Manual

For the 2025 model year Yamaha issued LIT-19616-A3-87, and the UMAX 2 EFI, code YUM2A25, is one of three configurations it covers.

A tighter coverage list than the 2024 book means fewer variations to read past. The procedures still follow factory order: maintenance schedule and specification tables first, then engine and fuel injection, electrical, drive, and chassis.

Notable sections

• Injection fault codes and circuit tests
• Engine overhaul with clearances
• Charging, starting and ignition checks
• Clutch, belt and rear axle service
• Brakes, steering and suspension

Wiring diagrams are complete and torque values are tabulated rather than scattered through the text. Match YUM2A25 to your vehicle identification before relying on a figure, and quote the part number alongside the code when you order parts.