Flushing The Cooling System - Mercury 200 User Manual

• Replace water separating fuel filter. See Fuel System.
• Check corrosion control anodes. Check more frequently when
used in salt water. See Corrosion Control Anodes.
• Drain and replace gearcase lubricant. See Gearcase
Lubrication.
•
Lubricate splines on the driveshaft and shift shaft.
• Check power trim fluid. See Checking Power Trim Fluid.
• Inspect battery. See Battery Inspection.
•
Check control cable adjustments.
• Check tightness of bolts, nuts, and other fasteners.
EVERY 300 HOURS OF USE OR THREE YEARS
• Replace water pump impeller (more often if overheating
occurs or reduced water pressure is noted).
• Inspect the poppet valve assembly for deterioration of the
rubber diaphragm. Replace the rubber diaphragm if
necessary.
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: Engine can be stopped or running at idle speed when
flushing the cooling system. Do not flush engine using a water
system that exceeds 310.26 kPa (45 psi).
1. Remove the plug from fitting in the bottom cowl.
MAINTENANCE
1.
58
1.
29296
1.