Mercury 200 OptiMax Manual page 83

Examine the drained gearcase lubricant for metal particles. A small
amount of metal particles indicates normal gear wear. An
excessive amount of metal filings or larger particles (chips) may
indicate abnormal gear wear and should be checked by an
authorized dealer.
DRAINING GEARCASE
1. Place outboard in a vertical operating position.
2. Remove propeller. Refer to Propeller Replacement.
3. Place drain pan below outboard.
4. Remove vent plug and fill/drain plug and drain lubricant.
a - Vent plug
GEARCASE LUBRICANT CAPACITY
Gearcase
970 ml (32.8 fl. oz.).
GEARCASE LUBRICANT RECOMMENDATION
Mercury or Quicksilver High Performance Gear Lubricant.
CHECKING LUBRICANT LEVEL AND REFILLING
GEARCASE
1. Place outboard in a vertical operating position.
2. Remove vent plug/sealing washer.
MAINTENANCE
lubricant
b
a
b - Fill/drain plug
capacity
75
22692
is approximately