1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 302Get this manual
Quality of the image is intentionally reduced!
SPARK PLUGS
WhllVACUUM GAUGE
III Red-Whi'White
NORMAll CLOSED REVERSE INTERLOCK SWITCH
KEY SWITCfl 87 6J.t1i8A1
TlON(Set! NOln ConMi:t