Specifications

63
CE45
ENGINE COOLANT
1 Check coolant level in coolant recovery bottle. Add specified coolant as required.
NOTE: Coolant recovery system is considered to be functioning properly when coolant level in heat exchanger/
coolant tank remains at bottom edge of its filler neck.
WARNING
Do not remove coolant tank cap when engine is hot. Coolant may discharge violently, causing severe
burns.
2 Periodically, to ensure that coolant recovery system is functioning properly, you should allow engine to cool
and then
slowly and carefully remove coolant tank cap. Coolant level must be to the bottom edge of the tank filler
neck. If coolant is low, add coolant as necessary to bring up to proper level. Refer to “Specifications” for proper
coolant.
3 If coolant level was low:
• Inspect coolant recovery system for leaks.
• Inspect coolant tank cap gaskets for damage and replace if necessary.
• Also, the tank cap maintains pressure on the coolant tank. It may not be holding pressure properly. To have
cap tested, contact your Authorized MerCruiser Dealer.
CAUTION
If the coolant should get extremely low and the engine very hot, let the engine cool for approximately
15 minutes before adding coolant; then, with the engine running, add coolant slowly. Adding cold cool-
ant to a hot engine may crack the cylinder head or crankcase. Never use water alone.