MerCruiser Axius 350 MAG User Manual page 114

Section 5 - Maintenance
1. If flushing the cooling system with the boat in the water:
a.
b.
c.
2. If flushing the cooling system with the boat out of the water:
a.
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.
Place a block of wood between the propeller blade and the anti‑ventilation plate.
b.
c.
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.
6. Using a suitable adapter, connect the flushing hose from the water source to the water
inlet of the seawater pump.
Without sufficient cooling water, the engine, the water pump, and other components will
overheat and suffer damage. Provide a sufficient supply of water to the water inlets during
operation.
7. With sterndrive in normal operating position, open the water source fully.
8. Place the remote control in neutral idle speed position and start engine.
Operating the engine out of the water at high speeds creates suction, which can collapse
the water supply hose and overheat the engine. Do not operate the engine above 1400
RPM out of the water and without sufficient cooling water supply.
9. Slowly advance throttle until engine reaches 1300 RPM (+/‑100 RPM).
Page 106
Raise sterndrive to trailer position.
Install the appropriate flushing attachment over the water inlet holes in the gear
housing.
Lower sterndrive unit to full down (in) position.
Lower sterndrive to full down (in) position.
Remove propeller.
Install the appropriate flushing attachment over the water inlet holes in the gear
housing.
WARNING
!
6147
NOTICE
NOTICE
90-899883234 JANUARY 2008