4. Rotate the blue shut‑off handle counterclockwise until it stops. The red on the handle shaft indicates the drain is sufficiently
open to allow the water to drain from the engine.
a - Blue plug
b - Blue shut‑off handle
5. Water should begin to drain out of the distribution housing.
IMPORTANT: If water does not drain from the distribution housing after opening the blue shut‑off handle, remove the blue
plug on the distribution housing.
a - Blue plug
b - Distribution housing water drain
6. Allow the system to drain for a minimum of ten minutes or longer.
7. After the water has drained from the engine, install the blue plugs on the distribution housing and engine block if they were
removed and tighten them securely.
8. Rotate the blue shut‑off handle clockwise until it stops. The handle is fully seated when no red is visible. Do not overtighten
the handle.
Cold Weather or Extended Storage
Reformulated (Oxygenated) Gasolines (U.S.A. Only)
This type of gasoline is required throughout most of the U.S.A. There are two types of oxygenates used in fuels: alcohol
(ethanol) or ether (MTBE or ETBE). Gasoline containing ethanol is especially subject to absorbing atmospheric moisture,
forming gums or solids, or it may separate into a layer of fuel floating on top of a layer of water and alcohol. To reduce the
potential for separation, storage should be in containers that prevent oxidation or water vapors mixing. If ethanol is used in the
gasoline in your area, refer to Fuel Containing Alcohol.
Fuels for your Mercury Marine engine may contain up to 10% of ethanol or ether.
Fuel Containing Alcohol
Fuels containing either methanol (methyl alcohol) or ethanol (ethyl alcohol) may cause certain adverse effects. These adverse
effects are more severe with methanol. Increasing the percentage of alcohol in the fuel can also worsen these adverse effects.
Some of these adverse effects are caused because the alcohol in the gasoline can absorb moisture from the air, resulting in a
separation (phase) of the water/alcohol from the gasoline in the fuel tank.
Section 5 - Storage
90-8M0128973 eng MAY 2017 Page 95
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