The is a technician-level tool used to communicate with the Engine Control Unit (ECU) on Yamaha outboard engines, personal watercraft (PWC), and jet boats, typically models manufactured before 2011. 1. Where to Download/Get the Software
The post was from a retired factory mechanic in Iwata, Japan, who went by the username "ShizuoSan." The post read: Yamaha Yds 1.33 Diagnostic Software Download