2003 Suzuki LT-Z400 Factory Service Manual, Page 249Get this manual
REGULATED VOLTAGE Remove the seat Start the engine, turn tile switch to LIGHT and the dimmer switch to HI and run the engine at 5000 rmin,
Measure the DC between the and terminals using the multi circuit testeL If the voltage is not within ttle specified value, the and regulatorrectifierand 7-10)
When making this charged condition