Section 5 - Maintenance
Page 106 90-864195070 JUNE 2007
Flushing Device 91‑44357Q 2
Attaches to the water intakes; provides a fresh water
connection when flushing the cooling system or operating the
engine.
Dual Water Pick‑up Flush Gearcase Seal Kit 91‑881150K 1
Blocks off the front water inlet holes on the dual water inlet
gearcases.
STERNDRIVE WATER PICKUPS
There are two types of water pickups available on Mercury MerCruiser sterndrives: dual
water, and side pickups. Dual water pickups require the flushing attachment (44357Q 2)
and the flush seal kit (881150K 1), and side pickups require the flushing attachment
(44357Q 2).
5752
5773
Dual Water Pickup Side Pickup
NOTE: Flushing is needed only for salty, brackish, mineral laden or polluted water
applications. Flushing is recommended after each outing for best results.
NOTICE
Flushing the engine with the boat in the water can cause seawater to flow into the engine,
resulting in engine damage. Close the seacock before flushing the engine. Keep the
seacock closed until starting the engine.
1. On seawater cooled models: Proceed to Step 4. or Step 5.
2.
On Alpha closed cooled models with the sterndrive seawater inlet blocked:
Flushing water will need to be supplied to the sterndrive and to the engine. See
Alternative Water Pickups.
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