35
CD758
70516
1
B
70518
A
22444
4
1
CD759
Audio Warning System
Your Mercury MerCruiser power package may be equipped with an Audio Warning System.
1 The Audio Warning System horn will sound if any of the following occur:
A Engine oil pressure too low.
B Cooling system temperature too high.
2 If the Audio Warning System horn sounds while the engine is operating, stop the engine immediately.
Investigate the cause and correct it, if possible. If the cause cannot be determined or corrected, consult your
Authorized Mercury MerCruiser Dealer.
CAUTION
Avoid engine or sterndrive damage. Do not operate the engine once the Audio Warning System horn
has sounded EXCEPT TO AVOID A HAZARDOUS SITUATION. The Audio Warning System will not
protect the engine or sterndrive from damage. It is designed to warn the operator that a problem has
occurred.
3 To test the Audio Warning System:
A Turn the ignition switch to the RUN position. Do not start the engine.
B The horn will sound if the system is working correctly. Once the engine is started, the horn should not sound
except to warn the operator that a problem has occurred.
CA31
MerCathode System
4 A 20 amp in-line fuse is in the wire which connects to positive (+) terminal on controller. If fuse is “blown”
(defective), the system will not operate.
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