Every 200 Hours Or Annually (Whichever Occurs First); Every 500 Hours Or 5 Years (Whichever Occurs First); Every 1000 Hours Or 5 Years (Whichever Occurs First); Every 2000 Hours Or 5 Years (Whichever Occurs First) - Mercury TDI 3.0L Owner's Operation And Maintenance Manual

• Inspect the sterndrive U‑joints and lubricate the splines. Inspect the bellows, the exhaust tube, and check the clamps for
tightness.
• Inspect the gimbal bearing and lubricate the engine coupler every 50 hours if operated at idle for prolonged periods of time.
• Check the continuity circuit for loose or damaged connections. If equipped with MerCathode, test the unit output. See your
authorized dealer.
• Check the electrical system for loose, damaged, or corroded fasteners.
• Driveshaft extension models: Inspect the driveshaft U‑joints, transom end (tailstock) bearings, and engine end (output)
bearings for wear. See your authorized dealer.
• Lubricate the throttle and shift linkage if applicable.

Every 200 Hours or Annually (Whichever Occurs First)

• Visual inspection for leaks.
• Change the engine oil and filter.
• Replace the fuel water separator filter.
• Check the power steering fluid level.
• Check the closed cooling fluid condition and level.
• Inspect the air filter element and clean if necessary.
• Check the condition of the alternator and power steering pump ribbed V‑belt.
• Check the condition of the fuel injection pump belt. See your authorized dealer.
• Clean the seawater filter.
• Inspect the seawater pump and replace the impeller if necessary. See your authorized dealer.
• Inspect the sacrificial anode and replace if necessary.

Every 500 Hours or 5 Years (Whichever Occurs First)

• Replace the turbocharger outlet air temperature sensor.
• Inspect and clean the turbocharger intercooler core as required.

Every 1000 Hours or 5 Years (Whichever Occurs First)

• Clean the fuel tank.
• Inspect and clean, as required, the pipe bundles of the heat exchanger.

Every 2000 Hours or 5 Years (Whichever Occurs First)

Replace the fuel injection pump belt. See your authorized dealer.

Engine Oil

Checking the Engine Oil Level

With the engine running, the crankshaft journals or rod journals may strike and break the dipstick, resulting in damage to
internal engine components. Stop the engine completely before removing or inserting the dipstick.
1. Stop the engine and allow five minutes for the oil to drain into the pan.
90-8M0145546 MAY 2018
eng
NOTICE
Section 4 - Maintenance
Page 43