Mercury 75 Operation Maintenance Warranty Installation Manual page 111

GEARCASE LUBRICANT RECOMMENDATION
Mercury or Quicksilver Premium or High Performance Gear Lubricant.
CHECKING LUBRICANT LEVEL AND FILLING GEARCASE
1. Place the outboard in a vertical operating position.
2. Remove the front vent plug and rear vent plug.
3. Remove the fill/drain plug. Place the lubricant tube into the fill/drain plug
hole and add lubricant until it appears at the front vent hole. At this time
install the front vent plug and sealing washer.
a - Front vent plug
b - Front vent hole
c - Rear vent hole
d - Rear vent plug
e - Fill/drain plug
4. Continue adding the lubricant until it appears at the rear vent hole.
5. Stop adding the lubricant. Install the rear vent plug and sealing washer
before removing lubricant tube.
6. Remove the lubricant tube and install 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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MAINTENANCE
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