2006-2009 Suzuki LT-R450 Service Manual, Page 349Get this manual
ELECTRICAL SYSTEM
REGULATED VOLTAGE Remove the battery holder cover Start the engine, turn the ignition switch to LIGHT and the dimmer switch to HI and run the engine at 000 rmin Measure the DC voltage between the c) and battery terminals using the multi-circuit testerIf the voltage is not within the specified value, inspect the generator and regulatorrectifier(c:::::TS-10)
NOTE: When making this test, be sure that the battery is in fully-charged condition
1&11 09900-25008:
Multi-circuit tester set
Battery
Tester knob indication: Voltage (=-=-=) Regulated voltage (Charging output):