Scheduled Maintenance; Once A Year Or Every 200 Operating Hours (Whichever Occurs First); Maintenance Notice; Every 5 Years Or 500 Hours (Whichever Occurs First) - Mercury TDI 4.2L Manual

Section 4 - Maintenance
• Change the engine oil and filter.
• Check the coolant level and adjust it as necessary.
• Check the seawater pump impeller and replace it as necessary.
• Check the air filter element and clean it as necessary.
• Check and clean the seawater strainer.
• Inspect the anodes and replace them if they are 50% eroded.
• Clean the engine and replace worn or damaged components.
• Flush, drain, and winterize the seawater cooling system, if the climate requires it.
• Fill the fuel tank with fresh fuel.

Scheduled Maintenance

Once a Year or Every 200 Operating Hours (Whichever Occurs First)

• Inspect the power package for leaks and damage.
• Check the charge, connections, and condition of the battery. Charge or replace the battery as necessary.
• Change the engine oil and filter element.
• Drain any water and change the fuel filter.
• Check the power steering hydraulic oil level (if applicable), and adjust it as necessary.
• Inspect the coolant level and adjust it as necessary.
• Inspect the air filter element and clean it as necessary.
• Inspect the accessory drive belts, hoses, and power steering pump, where applicable.
• Inspect the fuel injection pump drive belt condition.
• Inspect and clean the seawater strainer.
• Inspect the seawater pump and change the impeller as necessary.
• Inspect the anodes and replace them if they are 50% eroded.
• Verify that the gauges and the wiring connections are secure.

Maintenance Notice

IMPORTANT: Due to the risk of damaging equipment if they are performed incorrectly, we highly recommended that the
following scheduled maintenance items be performed only by a Mercury Diesel authorized repair facility.

Every 5 Years or 500 Hours (Whichever Occurs First)

In addition to the Once–a–Year or Every 200 Operating Hours interval:
• Clean the intercooler core.

Every 5 Years or 1,000 Operating Hours (Whichever Occurs First)

In addition to the Once–a– Year or Every 200 Operating Hours interval:
• Clean the fuel tank.
• Check the heat exchanger pipe bundles. Remove and clean them as necessary:

Every 5 Years or 2,000 Operating Hours (Whichever Occurs First)

In addition to the Once–a–Year or Every 200 Operating Hours and Every 5 Years or 1,000 Operating Hours intervals:
• Replace the fuel injection pump drive belt.

Engine Oil

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.
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NOTICE
90-8M0114081 DECEMBER 2015
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