2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 349Get this manual
2On the 400H1 models, connect the black tester lead to either primary connector; on the 500700 EFI, connect the black tester lead to the coil frame or to the primary connector3The meter reading must be within specificationNOTE: If the meter does not show as specified, replace ignition coil PEAK VOLTAGE (500700 EFIH1 Models)
NOTE: All of the peak voltage tests should be made using the Fluke Model 73 Multimeter with Peak Voltage Reading AdapterIf any other type of tester is used, readings may vary due to internal circuitryNOTE: The battery must be at full charge for these tests
Spark Plug Cap 1Connect the red tester lead to one end of the cap; then connect the black tester lead to the other end of the cap
PrimaryCDI (500650 H1) ECU (EFI Models)
NOTE: The CDIECU is located beneath the seat near the battery