Mercury MerCruiser Axius 350 MAG, User Manual, Page: 133 / 151

Section 6 - Storage
90-864197084 NOVEMBER 2008 Page 125
Manual Single‑Point Drain System
Boat in the Water
1. Close the seacock (if equipped) or remove and plug the water inlet hose.
2. Rotate the blue handle counterclockwise until it stops (approximately two turns). The red on the handle shaft indicates that
the drain system is open. Do not force the handle as this will create new threads.
3. Immediately remove the blue drain plug from the side of the thermostat housing. This must be removed within 30 seconds to
properly vent the cooling system.
a - Blue handle
b - Blue drain plug location
4. Visually verify that water is draining. If water does not drain, remove the blue drain plug from the distribution housing and
drain manually.
a - Drain location ‑ orange or red
b - Blue drain plug
5. Allow the system to drain for a minimum of five minutes. We recommend leaving the drain system open while transporting
the boat or performing other maintenance.
6. Reinstall the blue drain plug in the thermostat housing.
7. Close the drain system by rotating the blue handle clockwise until it stops and install the blue drain plug, if removed. The
handle is fully seated when no red is visible. Do not overtighten the handle, as this action will create new threads.
8. Open the seacock (if equipped) or unplug and reconnect the water inlet hose before operating the engine.
Boat out of the Water
1. Place the boat on a level surface to ensure complete draining of system.
a
b
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a
b
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