Honda BF20A-BF25A, BF25D-BF30D Outboard Motors Shop Manual., Page 329Get this manual
16ELECTRICAL EQUIPMENT 1CDI UNIT
3SE THERMAL VALVE HEATER COIL
2POWER COIL
1CDI UNIT
aINSPECTION
Measure the resistance between the CDI unit terminalsCAUTION Be careful not to touch the metallic part of the tester probe with your body, otherwise correct resistance value cannot be obtainedUse only the specified tester shown below to obtain correct resistance valueHioki tester: Model 3030 Read the tester manufacturer's operation instructions carefully before operation with the testerBe sure the tester's battery is fully charged and check the meter before using the testerThe tester needle can sway large and it returns slowly effected by the internal condenserWait until the needle stabilizes before measurement-