Scheduled Maintenance; Engine Oil; Checking - Mercury MerCruiser Diesel Inboard 2.8L Operation & Maintenance Manual

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Scheduled Maintenance

After first 50 hours
Annually
Every 100 hours or annually
(whichever occurs first)
Every 200 hours or annually
(whichever occurs first)
Every 2 years
Every 1000 hours or 5 years
(whichever occurs first)
According to OEM Schedule

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.

Checking

IMPORTANT: Check the engine oil at the intervals specified by the maintenance schedule. It is normal for an engine to use a
small amount of oil during operation. The amount of oil consumed depends upon engine speed. Oil consumption is the highest
at wide open throttle and decreases substantially as engine speed is reduced.
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.
To check the engine oil level during operation, stop the engine and allow five minutes for the oil to drain into the pan.
2.
Remove the dipstick, wipe clean, and reinstall.
90-8M0133679
JUNE 2017
eng
Clean the transmission oil filter and change the transmission oil.
Touch‑up the power package with paint and spray with Corrosion Guard.
Clean the transmission oil filter and change the transmission oil.
Check the steering system and the remote control for loose, missing, or damaged
parts. Lubricate the cables and linkages.
Check the engine alignment.
Torque the engine mounts.
Check the electrical system for loose, damaged, or corroded terminals.
Inspect the cooling system and the exhaust system for damage or leaks. Check
both systems hose clamps for tightness.
Clean the transmission oil filter and change the transmission oil.
Change the engine oil and filter.
Replace the fuel filters.
Replace the air filter.
Inspect the condition and tension of the engine accessory drive belts.
Disassemble and inspect the engine seawater pump and replace worn
components.
Check the seawater pump drive belt.
Clean the seawater section of the closed cooling system. Clean, inspect, and test
the pressure cap. Check the anodes and replace if eroded by 50% or more.
Clean the seawater strainer.
Check the closed cooling fluid level and level of protection.
Check the run history for faults.
Check the engine timing belt.
Replace the engine coolant.
Replace the engine timing belt.
Clean the fuel tank.
Clean the aftercooler core.
Check the engine to propeller shaft alignment.
NOTICE
NOTICE
Section 4 - Maintenance
Page 35

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This manual is also suitable for:

Mercruiser diesel inboard 4.2l

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