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  1999 Mercury 100 hp warning horn

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Author Topic:   1999 Mercury 100 hp warning horn
ron567 posted 05-31-2009 03:56 PM ET (US)   Profile for ron567   Send Email to ron567  
Our horn beens continuously. We have replaced the oil sending unit inside the bottom of the oil tank. Still beeps continuously. When I disconnect the wire to the sending unit, the horn stops. The engine is using oil and running normal.

We have a Commander 2000 remote control. Any ideas?


bill705 posted 05-31-2009 07:28 PM ET (US)     Profile for bill705  Send Email to bill705     
Sounds like the magnet that activates the sending unit switch has dropped off of the float inside the tank. If so, you'll have to replace the tank. Not too costly and fairly easy to do.

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