MAINTENANCE
90-857046R1 NOVEMBER 2001 Page 1B-15
4-1/4 In. (108mm) Diameter Gear Case
When adding or changing gear case 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 gear case 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 gear case.
Examine the drained gear case lubricant for metal particles. A small amount of fine 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 GEAR CASE
1. Place outboard in a vertical operating position.
2. Place a drain pan below outboard.
3. Remove vent plugs and fill/drain plug. Drain lubricant.
a
b
c
a-Fill/drain Plug
b-Rear Vent Plug
c-Front Vent Plug
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