Mercury 300 XS OptiMax Manual page 96

7. Remove lubricant tube and reinstall cleaned (lower) fill/drain plug and
sealing washer.
Water in gear lubricant may:
• Settle to bottom and drain out with the lubricant
• Be mixed with lubricant giving a milky color to the lubricant
Water in gear lubricant will:
• Result in premature bearing failure
• In freezing temperatures, turn to ice and damage gearcase
DRAINING THE GEARCASE
c
a - Sport Master gearcase (vertical operating position)
b - Fleet Master/Torque Master gearcase (vertical operating position)
c - Vent plug and sealing ring
d - Fill/drain plug and sealing ring
e - Drain pan
1. Place the outboard in a vertical operating position.
2. Place a drain pan below the outboard gearcase.
3. Remove the vent plug (upper plug) and sealing ring.
4. Remove the fill/drain plug (lower plug) and sealing ring and drain the
lubricant.
GEARCASE LUBRICANT CAPACITY
Gearcase lubricant capacity is approximately 710 ml (24 oz).
MAINTENANCE
a
d
e
b
or50-1
90
c
eng