Honda BF50 (5HP) BF5A Outboard Motors Shop Manual., Page 89Get this manual
IVDISASSEMBLY AND SERVICE 1ELECTRICAL EQUIPMENT
aINSPECTION
REGULATORRECTIFIER (SD, LD, SC types optional part)
Measure the resistance between each terminalReplace the regulatorlrectifier if the measurement is out of the specification listed in the table belowUse the tester belowSANWA: SP-10D kQ range KOWATH-5H 100 range