Mercury 3.0 MPI ECT Operation & Maintenance Manual page 92

Section 5 - Storage
4. Turn on the bilge pump and supply water to the water inlets. If the boat is out of the water, install the flushing attachment
and open the water source fully to provide maximum water flow.
a
Flushing Device
5. Start the engine and allow it to operate at idle until the obstruction is cleared from the hose or for approximately 1 minute,
whichever occurs first.
6. Check for water draining from the blue drain hose. If after 1 minute of idling, the blue drain hose is still clogged, proceed to
Step 7. If water is draining, shut off the engine and continue with Step 3 of Single Point Drain System.
7. Shut off the engine. Disconnect the water source if connected to a flush device.
8. Attach the female end of the water hose adapter fitting to a water supply.
9. Attach the clogged blue drain hose to the male end of the water hose adapter fitting.
10. Fully open the water supply and allow it to run for 1 minute.
11. Turn off the water supply. Disconnect the water hose adapter from the blue drain hose and the water hose.
12. Push down on the T‑handle to force the blue drain hoses down below their connection points on the block.
13. Check for water draining from the blue drain hose. If the blue drain hose is still clogged, shut off the bilge pump and
reattach the blue drain hoses following the steps below. The unit will need to be serviced by an authorized Mercury
MerCruiser dealer.
a. Pull the T‑handle until the quick connect fittings on the blue drain hoses are within reach.
b. Install the quick connect fittings on the bracket. Pull on the blue drain hoses to ensure they are firmly connected.
c. Push down on the T‑handle until seated.
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7358
Attaches to the water intakes; provides a fresh water connection when flushing the cooling system
or operating the engine.
9192
Hose Adapter Fitting (22-863840)
a - Flushing attachment
91‑44357Q 2
7252
90-8M0113856 DECEMBER 2015
eng