Section 5 - Maintenance
90-8M0069751 eng APRIL 2012 Page 81
4. Move the fuel lines so they do not obstruct access to the engine coolant drain plug.
Port side of engine
a - Throttle cable bracket
b - 14–pin electrical connector
c - Water–separating fuel filter
d - Fuel cooler with fuel lines moved to provide access
e - General location of engine coolant drain plug
f - Engine control module
5. Remove the engine coolant drain plug and drain the coolant into a suitable container.
NOTE: Allow the engine coolant system to drain completely.
NOTE: Dispose of old coolant properly.
Port side of block with
water–separating fuel
filter removed for access
a - Engine coolant drain
plug
6. Ensure that the coolant has drained completely.
7. If required, clean the closed cooling system. See your local Mercury Diesel authorized repair facility.
8. Install and tighten the engine coolant drain plug.
9.
Reinstall the water–separating fuel filter. Refer to Water–Separating Fuel Filter, Replacing.
10.
Fill the system with the specified coolant. Refer to Filling the Closed Cooling System.
Filling the Closed Cooling System
1. Remove the pressure cap.
QSD 2.0L (engine cover removed)
a - Pressure cap
b - Coolant expansion tank
c - Coolant fill neck
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