Mercury Mariner 4, 5, and 6HP 4-Stroke Factory Service Manual, Page 40Get this manual

Mercury Mariner 4, 5, and 6HP 4-Stroke Factory Service Manual, Page 40

OUTBOARD MOTOR INSTALLATION
Installing Outboard
1Measure the transom height of your boatThe boat bottom should be aligned or be within in(25 mm) above the anti-ventilation plate of the outboard