This document introduces the storage preparation of Outboard Motors, including fuel system, water system and electrical system.
This document outlines procedures to prepare a Mercury 4-6HP four-stroke outboard motor for seasonal or prolonged storage. The primary goals are to protect the unit from rust, corrosion, and damage caused by freezing water.
The guide provides specific instructions for treating the fuel system with stabilizers to prevent varnish formation, lubricating internal engine components like cylinders and gearcases, and proper positioning of the outboard during storage to prevent oil drainage or freeze damage.
Prolonged storage is defined as two months or longer.
No, never start or operate the outboard without water circulating through all cooling water intake holes to prevent damage.
It is advisable to drain as much of the remaining gasoline as possible from the fuel tank, remote fuel line, and engine fuel system.