Flushing The Cooling System; Cowl Removal And Installation - Mercury 200 User Manual

• Check power trim fluid. See Checking Power Trim Fluid.
•
Replace high pressure in‑line fuel filter
• Replace spark plugs at first 300 hours or three years. After that, inspect spark plugs every 300
hours or three years. Replace spark plugs as needed. See Spark Plug Inspection and
Replacement.
•
Replace accessory drive belt. See Accessory Drive Belt Inspection.
BEFORE PERIODS OF STORAGE
• Refer to Storage procedure. See Storage section.

Flushing The Cooling System

Flush the internal water passages of the outboard with fresh water after each use in salt, polluted, or
muddy water. This will help prevent a buildup of deposits from clogging the internal water passages.
NOTE: The outboard can be tilted or in the vertical operating position during flushing.
1. With the engine turned off, place the outboard in either the operating position (vertical) or in a
tilted position.
2. Disconnect the flush connector from fitting on the bottom cowl.
3. Thread a water hose into the flush fitting.
4. Turn on the water tap (1/2 maximum) and let the water flush through the cooling system for about
15 minutes.
5. When flushing is complete, turn off water and disconnect the water hose.
6. Reinstall the flushing connector to the fitting on the bottom cowl. Tighten the connector securely.

Cowl Removal and Installation

COWL REMOVAL
IMPORTANT: Most maintenance points are accessible by removing the top cowl only.
MAINTENANCE
1.
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