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Mercury 90 Operation Maintenance Warranty Installation Manual

Mercury 90
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Tube Ref
No.
Description Where Used Part No.
114
Power Trim and
Steering Fluid
Power trim reservoir 92-858074K01
27884
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 a drain pan below the outboard.
3. Remove the vent plugs and fill/drain plug and drain the lubricant.
a - Vent plugs
b - Fill/drain plug
GEARCASE LUBRICANT CAPACITY
Gearcase lubricant capacity is approximately 665 ml (22.5 fl oz).
b
a
26977
MAINTENANCE
100 eng

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Mercury 90 Specifications

General IconGeneral
BrandMercury
Model90
CategoryOutboard Motor
LanguageEnglish

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