Flushing Cooling System; Corrosion Protection - Mercury 240 Jet Drive Manual

Flushing Cooling System

Flushing the cooling system is essential after each use in salt water, after the boat has run
aground, or when the overheat warning horn sounds (possible debris in jet powerhead).
1. Locate the flush adapter in the boat. Some boats may have the adaptor mounted in the
hull or mounted in the engine compartment. Remove flush adaptor plug and attach wa-
ter hose.
a
a -
b -
2. The engine may be run using the Flushing Attachment: DO NOT run the engine above
idle speeds.
3. Turn water on and flush engine block for at least 10 minutes.
4. Remove water hose and install flush adaptor plug.
5. Flush outer surfaces of pump with water stream.

Corrosion Protection

The jet drive has three corrosion control anodes. One of the anodes is installed on the bot-
tom of the nozzle, one installed on the reverse gate and one is installed under the rudder.
a -
90-884822 DECEMBER 2001
Flush Adapter Plug Mounted on Hull
Flush Adapter Plug Mounted in Engine Compartment
a
Corrosion Control Anodes
MAINTENANCE
b
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