Section 5 - Maintenance
90-864197070 JUNE 2007 Page 65
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.
NOTICE
Air trapped in the closed cooling system can cause the engine to overheat, resulting in
engine damage. Minimize the possibility of trapping air when initially filling the closed
cooling system by positioning the boat so that the front of the engine is higher than the
rear of the engine.
NOTE: Add coolant only when engine is at normal operating temperature.
1. Remove the fill cap from the coolant recovery bottle.
2. Fill to the "FULL" line with the specified coolant.
Tube Ref No. Description Where Used Part No.
122
Extended Life Antifreeze/
Coolant
Closed Cooling System 92-877770K1
3. Install the fill cap onto the coolant recovery bottle.
Changing
Contact your authorized Mercury MerCruiser dealer.
Cleaning The Flame Arrestor
!
WARNING
Fuel is flammable and explosive. Ensure the key switch is off and the lanyard is positioned
so that the engine cannot start. Do not smoke or allow sources of spark or open flame in
the area while servicing. Keep the work area well ventilated and avoid prolonged
exposure to vapors. Always check for leaks before attempting to start the engine and
wipe up any spilled fuel immediately.
1. Remove the engine cover.
2. Disconnect and remove the crankcase ventilation hose from the fitting on the flame
arrestor and valve cover.
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