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• Inspect the tube stack and replace if damaged.
• Reassemble and refit, checking the end cap "O" rings are in good condition.
• Ensure the end caps are fitted in the correct orientation. If they are not in the correct
orientation, overheating will occur which will not be covered under the warranty.
• Refill the engine with coolant as described earlier.
17. Winterisation of Seawater Cooling System
• To prevent frost damage to the seawater cooling circuit components due to water
freezing, ensure all seawater or raw water is drained from the system.
• Alternatively, run neat antifreeze through the seawater pump inlet to protect the
system.
• Ensure that the antifreeze is drained before starting the engine during the next season.
This is to ensure that it does not get into the marine environment. Dispose of the
antifreeze correctly.
RDG603A81 – Issue 2
Page 51 of 93
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