2007-2009 Suzuki LTZ90 factory service manual, Page 200Get this manual
ELECTRICAL SYSTEM
GENERATOR NO-LOAD PERFORMANCE Remove the left footrest mudguard( 5-5) Disconnect the regulatorrectifier coupler Start the engine and keep it running at 800 rmin Using the multi-circuit the voltage between WR wire and groundIf the tester reads under the specified value, replace the generator coil with new one09900-25008: Multi-circuit tester set Tester knob indication: Voltage () Generator no-load performance: 20 and more at 800 rmin (When engine is cold)
WR Br RW WR BW