Mercury Mariner 4, 5, and 6HP 4-Stroke Factory Service Manual, Page 68Get this manual

Mercury Mariner 4, 5, and 6HP 4-Stroke Factory Service Manual, Page 68

CHARGING SYSTEM
Rectifier (Battery Charging)
Installation
1This rectifier kit provides DC current for battery charging, and must be installed in conjunction with Alternator Kit2Secure rectifier to crankcase cover, as shown