Mercury 4.3 TKS series, Operation & Maintenance Manual

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Section 4 - Maintenance
90-8M0113857
eng
DECEMBER 2015 Page 37
2. Fill to the "FULL" line with the specified coolant.
Tube Ref No. Description Where Used Part No.
122
Extended Life Antifreeze/Coolant Closed Cooling System 92-877770K1
3. Install the fill cap onto the coolant recovery bottle.
Changing
Contact your authorized Mercury MerCruiser dealer.
Alpha Sterndrive Gear Lube
NOTICE
Discharge of oil, coolant, or other engine/drive fluids into the environment is restricted by law. Use caution not to spill oil,
coolant, or other fluids into the environment when using or servicing your boat. Be aware of the local restrictions governing
the disposal or recycling of waste, and contain and dispose of fluids as required.
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 cooling 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 overtighten.
a
b
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b
a