Mercury 25 EFI FourStroke User Manual page 125

OIL CHANGING PROCEDURE
1. Tilt the outboard up to the trailer position.
2. Turn the steering on the outboard so that the drain hole is
facing downward. Remove drain plug and drain engine oil
into an appropriate container. Lubricate the seal on the drain
plug with oil and reinstall.
CHANGING OIL FILTER
1. Place a rag or towel below the oil filter to absorb any spilled
oil.
2. Unscrew old filter by turning the filter to the left.
3. Clean the mounting base. Apply film of clean oil to filter
gasket. Do not use grease. Screw new filter on until gasket
contacts base, then tighten 3/4 to 1 turn.
OIL FILLING
1. Remove the oil fill cap and add oil to proper operating level.
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MAINTENANCE
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