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Mercury 25 4-Stroke - Spark Plugs, Fuses, Belts, and Lubrication

Mercury 25 4-Stroke
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MAINTENANCE
62
CHECKING LUBRICANT LEVEL AND REFILLING GEARCASE
1. Place outboard in a vertical operating position.
2. Remove vent plug.
ob00440
a
c
b
a - Vent hole
b - Vent plug
c - Fill/drain plug
3. Place lubricant tube into the fill hole and add lubricant until it appears at the vent hole.
IMPORTANT: Replace sealing washers if damaged.
4. Stop adding lubricant. Install the vent plug and sealing washer before removing the lubricant tube.
5. Remove lubricant tube and reinstall cleaned fill/drain plug and sealing washer.
Submerged Outboard
A submerged outboard will require service within a few hours by an authorized dealer once the outboard is
recovered from the water. This immediate attention by a servicing dealer is necessary once the engine is exposed
to the atmosphere to minimize internal corrosion damage to the engine.

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