sv650 voltage regulator
Hope this information isn't too late for you.
According to the 1999-2001 SV650S manual:
Generator max output: approx. 300W at 5,000 rpm.
Generator no-load voltage (when cold): more than 70V (AC) at 5,000 rpm.
Regulated voltage: 13.5 - 15.0V at 5,000 rpm.
Battery capacity: 12V 36.0 kC (10 Ah)/10HR [I don't know what the kC means].
The circuit diagram is similar to your reg_fiordelmondo.jpg but instead of the 3 scrs having a common output to the comparatore de tensione (Suzuki just labels it an IC), each has a separate connection to it, so the IC has 4 connections where you currently show 2.
Hope this helps.
H