Mercury 300XS OptiMax - Engine Runs Erratically; Performance Loss; Warning Horn Activates (With Power Loss)

MAINTENANCE
85
NOTE: Examine the magnetic fill/drain plug for metal particles. A
small amount of metal filings or fine metal particles indicates
normal gear wear. An excessive amount of metal filings or larger
particles (chips) should be checked by an authorized dealer.
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 lubricant
Water in gear lubricant will:
• Result in premature bearing failure
• In freezing temperatures, turn to ice and damage gearcase
DRAINING THE GEARCASE
or50-1
a
b
c c
d
e
a - SportMaster Gearcase
(vertical operating
position)
b - Fleet/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 outboard.