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Mercury 300XS OptiMax User Manual

Mercury 300XS OptiMax
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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.

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Mercury 300XS OptiMax Specifications

General IconGeneral
Engine Type2-Stroke
Horsepower300 HP
Alternator Output60 amp / 756 watt
Gear Ratio1.75:1
Starting SystemElectric
Fuel System2-Stage Direct Fuel Injection (DFI)
Weight505 lbs / 229 kg
Cylinders6
SteeringHydraulic
Shaft Length25"

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