Section 5 - Maintenance
Page 108 90-864195070 JUNE 2007
ALTERNATIVE WATER PICKUPS
IMPORTANT: Two water sources are needed for this procedure.
NOTE: Flushing is needed only for salty, brackish, mineral laden or polluted water
applications. Flushing is recommended after each outing for best results.
IMPORTANT: Engines with the sterndrive water inlet blocked off at the gimbal housing and
using a through‑hull water inlet need a supply of cooling water available to both the
sterndrive and to the engine during operation.
1. If flushing the cooling system with the boat in the water:
a. Raise sterndrive to trailer position.
b. Install the appropriate flushing attachment over the water inlet holes in the gear
housing.
c. Lower sterndrive unit to full down (in) position.
2. If flushing the cooling system with the boat out of the water:
a. Lower sterndrive to full down (in) position.
!
WARNING
Rotating propellers can cause serious injury or death. Never operate the boat out of the
water with a propeller installed. Before installing or removing a propeller, place the drive
unit in neutral and engage the lanyard stop switch to prevent the engine from starting.
b. Remove propeller.
c. Install the appropriate flushing attachment over the water inlet holes in the gear
housing.
3. Connect hose between flushing attachment and water source.
4. Close the seacock, if equipped, to prevent water from siphoning into the engine or boat.
5. Remove the seawater inlet hose from the seawater pump and plug the hose to prevent
water from siphoning into the engine or boat.
6147
6. Using a suitable adapter, connect the flushing hose from the water source to the water
inlet of the seawater pump.
NOTICE
Failure to provide sufficient cooling water will damage the water pump and cause the
engine to overheat. Provide a sufficient supply of water at the water inlets during
operation.
7. With sterndrive in normal operating position, open the water source fully.
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