3. Remove the wire from the sterndrive and retain for periodic water inlet checks.
a - Dual water pickup water inlets
b - Side pickup water inlets
Flushing and Draining the Seawater System
1. Close the seacock.
2. Open and clean the seawater filter.
3. Fill the seawater filter with fresh water and operate the engine at idle.
IMPORTANT: Keep the seawater filter filled with fresh water while the engine is running.
4. Operate the engine until the water draining from the engine runs clear to ensure that all sludge and salt residues are
flushed away.
5. Switch off the engine.
6. Replace the cover on the seawater filter.
7. Attach a suitable hose to the seawater‑cooling system drain screw.
Heat exchanger drain screws
a - Closed‑cooling system drain screw
b - Seawater‑cooling system drain screw
8. Open the drain screw and allow the water to drain into a suitable container.
9. When the draining is complete, remove the hose and close the drain screw.
10. Be certain to open the seacock prior to boat operation.
Section 4 - Maintenance
Page 62 90-8M0145546 eng MAY 2018
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