Mercury 150 Operation, Maintenance And Installation Manual page 69

2. Place a drain pan below the outboard.
3. Remove the vent plug and the fill/drain plug and drain the lubricant.
a
b
GEARCASE LUBRICANT CAPACITY
Gearcase lubricant capacity is approximately 665 ml (22.5 fl oz).
GEARCASE LUBRICANT RECOMMENDATION
Mercury or Quicksilver High Performance Gear Lubricant.
CHECKING LUBRICANT LEVEL AND REFILLING GEARCASE
1. Place the outboard in a vertical operating position.
2. Remove the vent plug.
3. Remove the fill/drain plug. Place the lubricant tube into the fill hole and
add the lubricant until it appears at the vent hole.
a
b
a - Vent plug
b - Vent hole
c - Fill/drain plug
IMPORTANT: Replace sealing washers if damaged.
4. Stop adding lubricant. Install the vent plug and sealing washer before
removing the lubricant tube.
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MAINTENANCE
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a - Vent plug
b - Fill/drain plug
c
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