Section 5 - Maintenance
90-8M0069751 eng APRIL 2012 Page 53
1. Check the gear lube monitor to determine the gear lube level. Keep the gear lube level within the recommended operating
range. See Filling.
Gear lube level shown is at the correct operating range
a - "ADD" mark
b - "OPERATING RANGE" mark
IMPORTANT: If any water is visible at the bottom of the gear lube monitor or appears at the fill and drain plug hole, or if the
gear lube appears discolored, contact your Mercury Diesel authorized repair facility immediately. Both conditions may
indicate a water leak in the sterndrive.
Filling
IMPORTANT: If more than 59 ml (2 fl. oz.) of High Performance Gear Lube is required to fill the gear lube monitor, a seal may
be leaking. Damage to the sterndrive may occur due to lack of lubrication. Contact your Mercury Diesel authorized repair
facility.
1. If the gear lube level is below or near the "ADD" mark, the specified gear lube must be added.
2. Remove the gear lube monitor cap.
3. Fill the gear lube monitor with the specified gear lube so that the gear lube level is in the operating range. Do not overfill.
Gear lube monitor
a - Gear lube level at the "ADD" mark
b - Gear lube level at the "OPERATING RANGE" mark
c - Gear lube monitor cap
Tube Ref No. Description Where Used Part No.
87
High Performance Gear
Lube
Gear lube monitor 92-858064K01
19947
b
a
c
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