Mercury MERCRUISER - Drive Unit Oil; Checking; Filling; Changing

Section 5 - Maintenance
Page 68 90-864197076 NOVEMBER 2008
Drive Unit Oil
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
NOTE: Oil level will fluctuate during operation. Oil level should be checked with the engine cold, before starting.
1. Check the gear lube oil level. Keep the oil level within the recommended operating range. If any water is visible at the bottom
of the monitor or appears at the oil fill/drain plug and/or if oil appears discolored, contact your authorized Mercury MerCruiser
dealer immediately. Both conditions may indicate a water leak somewhere in the sterndrive unit.
33204
Seawater-cooled model shown
Filling
IMPORTANT: If more than 59 mL (2 fl oz) of High Performance 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 oil level is in the operating range. Do not overfill.
Tube Ref No. Description Where Used Part No.
87
High Performance Gear
Lubricant
Gear lube monitor 92-858064K01
3. Replace the cap.
NOTE: When filling the entire sterndrive unit refer to Changing.
Changing
1. Remove the gear lube monitor from the bracket.
2. Empty the contents into a suitable container.
3. Install the gear lube monitor in the bracket.