2008 Suzuki LT-A400/F, LT-F400/F ATV Service Manual, Page 224Get this manual
1J-10 Charging System:
RegulatorRectifier Inspection
Inspect the regulatorrectifier in the following procedures: 1) Turn the ignition switch OFF2) Remove the rear fenderRefer to "Exterior Parts Removal and Installation in Section 9D (Page 9D-3)"3) Disconnect the coupler and remove the regulatorrectifier (1)
B827H21A06005
I827H11A0035-01
4) Measure the voltage between the terminals using the multi-circuit tester as indicated in the following tableIf the voltage is not within the specified value, replace the regulatorrectifier with new oneNOTE If the tester reads 1.4 and below when the tester probes are not connected, replace its batterySpecial tool0990025008 (Multi-circuit tester set) Tester knob indication Diode test)