Section 4 - Maintenance
90-8M0113856 eng DECEMBER 2015 Page 57
5. The coolant level should be between the "ADD" and "FULL" marks.
6102
6. Add the specified fluid as necessary.
Tube Ref No. Description Where Used Part No.
122
Extended Life Antifreeze/Coolant Closed Cooling System 92-877770K1
Filling
NOTICE
Using propylene glycol antifreeze in the closed cooling system can damage the cooling system or the engine. Fill the closed
cooling system with an ethylene glycol antifreeze solution suitable to the lowest temperature to which the engine will be
exposed.
NOTICE
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.
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.
Alpha Sterndrive Gear Lube
NOTICE
Discharge of oil, coolant, or other engine/drive fluids into the environment is restricted by law. Use caution not to spill oil,
coolant, or other fluids into the environment when using or servicing your boat. Be aware of the local restrictions governing
the disposal or recycling of waste, and contain and dispose of fluids as required.
Checking
IMPORTANT: The gear lube level fluctuates during operation. Check before starting, when the engine is cold.
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