Gearcase Lubrication - Mercury GO BOLDLY 25 EFI Operation, Maintenance And Installation Manual

6. Align the notch in the rubber mount with the rib on the filter housing, and
install the rubber mount.
b
a
7. Install the filter assembly onto the mounting bracket.
8. Connect the fuel line to the engine and prime the engine fuel system.
Inspect the fuel filter area for fuel leaks. Repair as needed.

Gearcase Lubrication

When adding or changing gearcase lubricant, visually check for the presence of
water in the lubricant. If water is present, it may have settled to the bottom and
will drain out prior to the lubricant, or it may be mixed with the lubricant, giving it
a milky colored appearance. If water is noticed, have the gearcase checked by
your dealer. Water in the lubricant may result in premature bearing failure or, in
freezing temperatures, will turn to ice and damage the gearcase.
Examine the drained gearcase lubricant for metal particles. A small amount of
metal particles indicates normal gear wear. An excessive amount of metal
filings or larger particles (chips) may indicate abnormal gear wear and should
be checked by an authorized dealer.
DRAINING GEARCASE
1. Place the outboard in a vertical operating position.
2. Place the drain pan below outboard.
3. Remove the vent plug and fill/drain plug and drain lubricant.
eng
MAINTENANCE
a -
b -
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Notch in rubber mount
Rib on filter housing
a - Vent plug
a
b - Fill/drain plug
b
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