1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 533Get this manual

1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 533

Quality of the image is intentionally reduced!

CORE PLUG REPLACEMENT REMOVA L
INSTA LL ATION

1 Ins ta l! core lu gs (F ig ure 9) with flanged edge outi xi m!m ia me ter th plu is located at outer edge of fl nae on up-t ype plugs