Yamaha 115-225 HP Outboards Service Manual, Page 224Get this manual
I 1.1 ELECG
CLEANING, INSPECTION AND REPAIR
M565050
RECTIFIER REGULATOR 1) Check the continuity of the rectifierIf continuity is not as specified, replace the rectifier regulator
Rectifier check
Black Black Green
Green Conti nuity
Red Conti nuity Conti nuity
Disconti nuity