Section 5 - Maintenance
Page 88 90-8M0050539 eng MAY 2011
Checking
IMPORTANT: The gear lube level fluctuates during operation. Check before starting, when the engine is cold.
1. Check the gear lube level in the monitor bottle. Keep the gear lube level within the recommended operating range.
a - Seawater cooled models
b - Closed cooled models
2. Inspect the gear lube condition. If any water is visible in the bottom of the gear lube monitor, if water appears at the fill and
drain plug hole, or if the gear lube appears discolored, these conditions can indicate a water leak in the sterndrive.
Filling
IMPORTANT: If more than 59 ml (2 fl. oz.) of gear lubricant is required to fill the monitor, a seal may be leaking. Damage to the
sterndrive unit may occur due to lack of lubrication. Contact your authorized Mercury MerCruiser dealer.
1. Remove the gear lube monitor cap.
2. Fill the monitor with the specified fluid so that the gear lube level is in the operating range. Do not overfill.
a - "ADD" mark
b - "OPERATING RANGE" mark
Tube Ref No. Description Where Used Part No.
87
High Performance Gear
Lubricant
Gear lube monitor 92-858064K01
3. Ensure that the rubber gasket is inside the cap and install. Do not over tighten.
NOTE: When filling the entire sterndrive unit refer to
Changing
.
Changing
1. Remove the gear lube monitor from the bracket.
2. Remove the gear lube monitor cap and empty the contents into a suitable container.
3. Install the gear lube monitor in the bracket.
19948
b
a
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