Mercury Mariner 4 and 5HP 4-Stroke Outboards Service Shop Manual 1999, Page 95Get this manual

Mercury Mariner 4 and 5HP 4-Stroke Outboards Service Shop Manual 1999, Page 95

Quality of the image is intentionally reduced!

EMISSIONS
Controlling Emissions
There are two principle methods of reducing emissions from two-stroke-cycle marine engineThe first method is to control the airfuel ratio th at goes into th