72
MAINTENANCE
LUBRICATION
Inspect the lubricant for water contamination.
Water can make the lubricant milky in appear-
ance. However, normal aeration can also cause
the same appearance.
To check for water contamination, put lubricant
into a glass container. Allow the oil to settle for a
minimum of one hour to determine if there is an
abnormal amount of water in the oil. Some gear-
case lubricants are designed to mix with a small
amount of water from normal water vapor conden-
sation within the gearcase.
Refer to GEARCASE LEAK TEST on p. 260.
Overheated lubricant will have a black color and
burned odor.
Internal gearcase inspection is recommended
when lubricant is contaminated or shows signs of
failure.
Filling
Refer to the INSPECTION AND MAINTENANCE
SCHEDULE on p. 66 for service frequency and
recommended lubricants.
Secure the gearcase in a vertical position.
Remove the lubricant level plug and the lubricant
drain/fill plug.
Slowly fill the gearcase with gearcase lube
through the drain/fill hole until it appears at the oil
level hole. Filling the gearcase too quickly can
cause air pockets and the gearcase may not fill
completely. Clean plug seal area and install the
lubricant level plug and new seal, then the lubri-
cant drain/fill plug and new seal. Tighten them to a
torque of 60 to 84 in. lbs. (7 to 9.5 N·m).
IMPORTANT: The recommended gear lubri-
cants are formulated for marine applications. Do
not use automotive gear lubricants, engine oils, or
any other oil or grease.
1. Lubricant level plug
2. Lubricant drain/fill plug
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