Section 4 - Maintenance
90-8M0113986 eng DECEMBER 2015 Page 43
5. Remove the engine coolant drain plug and drain the coolant into a suitable container. Allow the engine coolant system to
drain completely. Dispose of the coolant according to local laws.
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.
Install the water‑separating fuel filter. Refer to Water‑Separating Fuel Filter, Replacing.
10.
Fill the system with the specified coolant. Refer to Checking and Filling the Closed‑Cooling System.
Air Filter
Removal
1. Loosen the clamp and remove the oil separator vent hose.
2. Loosen the clamp and remove the air filter housing from the turbocharger inlet.
Air filter housing on engine
a - Oil separator vent hose clamp
b - Air filter element
c - Air filter housing clamp
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