1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 55Get this manual

1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 55

Quality of the image is intentionally reduced!

OUTBOARD INSTALLATION
1 Connect common ground cable (wire size same as engine battery cables) between negative terminals on starting batteries

aGround cable (same wire size as engin