Three Years Or 300 Hours; Five Years Or 500 Hours; Engine Oil; Checking - Mercury 8.2L MAG/H.O./SeaCore Sterndrive Operation And Maintenance Manual

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Section 4 - Maintenance
Check the battery condition and connections—dealer item
Touch up any paint nicks and spray the power package with Corrosion Guard
Change the engine oil and filter
Change the sterndrive gear oil
Check the closed cooling fluid level and concentration for freeze protection, if equipped
Replace the water‑separating fuel filter
Clean the crankcase vent—8.2L only
Clean the IAC muffler—8.2L only
Clean the flame arrestor—8.2L only
Inspect the condition of the accessory drive belt—dealer item
Tighten the connection of the gimbal ring to the steering shaft—dealer item
Check the steering system for loose components—dealer item
Check the remote control system for loose components—dealer item
Check the MerCathode module operation for proper protection and check the continuity circuit—dealer item
Replace the PCV valve
Jackshaft models—check U‑joints and tailstock bearings—dealer item
Spray the power package with Corrosion Guard
Inspect anodes, if equipped

Three Years or 300 Hours

Inspect the spark plugs and spark plug wires
Clean the flame arrestor and crankcase vent hoses
Check the engine mount fasteners for tightness and tighten to the specified torque—dealer item
Check the electrical system for loose, damaged, or corroded fasteners—dealer item
Check the exhaust and cooling system hose clamps for tightness. Inspect for damage or leaks—dealer item.
Inspect and clean seawater side of closed cooling system, if equipped—dealer item
Clean, inspect, and test the closed cooling pressure cap, if equipped—dealer item
Inspect seawater pump. Replace worn components—dealer item.
Inspect the exhaust system. If the power package is equipped with water shutters, verify they are not missing or damaged
—dealer item.
Check the engine alignment—dealer item
Inspect the gimbal housing bellows and verify clamp tightness—dealer item
Inspect the gimbal bearing for roughness—dealer item
Lubricate the engine coupler—dealer item
Replace the vent valve on each exhaust elbow, port and starboard, if equipped—dealer item

Five Years or 500 Hours

Replace the antifreeze—replace the antifreeze every two years if not using extended life antifreeze—dealer item

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

1.
Stop the engine. Allow approximately five minutes for the oil to drain into the oil pan. The boat must be at rest in the water.
2.
Inspect the condition of the spark plugs and spark plug wires. Replace as necessary. If the condition of these components is satisfactory, repeat the inspection every 100 hours or once a year,
whichever occurs first.
Page 48
2.
NOTICE
90-8M0128976
MAY 2017
eng

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