The correct maker point gap setting on the 1972 model, 20 hp Mercury outboard is .020in.
20degrees
28-32 degrees
28-32
Should be 28-32
The older model mercury outboards, with maker points, should have a 0.020" gap setting.
Should be set by dwell 28-32 degrees approx. .017
The points gap on a Merc 40 4hp is .020
the thickness of a paper match stick is real close.
Mercury has a melting point of -39.9
The melting point of mercury is: 38,83 0C.
The freezing point of mercury is -38,8290 0C.The boiling point of mercury is 356,73 0C.The temperature of mercury indoor or outdoor is the temperature of the environment.
Red Cagle went by The Red Thunderbolt of West Point.