Mercury 2.8 Diesel Operation & Maintenance Manual page 73

Flushing Device
Dual Water Pick‑up Flush Gearcase Seal Kit
4. Connect a flushing hose from a water tap to the flushing attachment.
IMPORTANT: Engines with the sterndrive water inlet blocked off at the gimbal housing and using a through‑hull or
through‑transom water inlet need a supply of cooling water available to both the sterndrive and to the engine during
operation.
5.
If your power package uses a through‑hull or through‑transom pickup, connect a second flushing hose from a water
tap to the seawater inlet hose connected to the seawater pump inlet using an appropriate adapter.
6. Partially open the water source to about 1/2 maximum. Do not use full water pressure.
90-8M0113987 DECEMBER 2015
eng
Attaches to the water intakes; provides a fresh water connection when flushing the cooling system
or operating the engine.
9192
Blocks off the front water inlet holes on the dual water inlet gearcases.
9194
a -
b -
a
b
12374
d
a
91‑44357Q 2
91‑881150K 1
Typical
Flushing attachment
Hose
2.8 shown, 4.2 similar
c
a - Adapter
b - Flushing hose
c - Water tap
d - Seawater inlet hose
b
23450
Section 4 - Maintenance
Page 65