Gearcase Lubrication - Mercury 4-STROKE Installation Operation Maintenance Warranty Manual

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3. Lubricate the following with Extreme Grease or 2‑4‑C with PTFE.
Tube Ref
No.
95
• Propeller shaft ‑ Refer to Propeller Replacement for removal and
installation of the propeller. Apply lubricant to the entire propeller shaft
to prevent the propeller hub from corroding to the shaft.

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.
Remove the fill/drain plug and examine the lubricant draining from the gearcase
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) 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.
eng
MAINTENANCE
Description
Extreme Grease
2-4-C with PTFE
Where Used
Propeller shaft
Propeller shaft
27344
93
Part No.
8M0071842
92-802859A 1

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