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Thread: Alarm ???

  1. #1
    Join Date
    Mar 2008
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    oktaha, ok.
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    Default Alarm ???


    I have a 2005 Optimax 150 that, when I get up on plane (usually at lower speeds) an alarm goes off and shuts most of engines power down. When I slow up to idle speed, alarm silences and I can take off again. Oil reservoir has plenty of oil in it. Anyone have any ideas as to possible causes for the alarm?? Thanks in advance.

  2. #2
    Join Date
    Feb 2006
    Location
    Wever, IA
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    FEATURES AND CONTROLS
    62
    eng
    Warning System
    WARNING HORN SIGNALS
    When the key switch is turned to the "ON" position, the horn will
    turn on for a moment as a test to indicate the horn is working.
    There are two types of warning horns to alert the operator of an
    active problem within the engine’s operating system.
    1.
    Continuous six second beep:
    Indicates a critical engine
    condition. Depending on the condition, the Engine Guardian
    system may engage and protect the engine by limiting it’s
    power. You should return to port immediately and contact
    your servicing dealer.
    2.
    Intermittent short beeps for six seconds:
    Indicates a
    noncritical engine condition. This condition does not require
    immediate attention. You may continue using your boat,
    however, depending on the nature of the problem, the
    engine’s power may be limited by the Engine Guardian
    system (see
    Engine Guardian System
    following) to protect
    the engine. You should contact your servicing dealer at your
    earliest convenience
    Fishing is a way of life. Teach your grandchildren to fish, hunt and enjoy the outdoors

  3. #3
    Join Date
    Feb 2006
    Location
    Wever, IA
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    FEATURES AND CONTROLS
    eng
    63
    ENGINE GUARDIAN SYSTEM
    The Engine Guardian system monitors the critical sensors on the
    engine for any early indications of problems. Engine Guardian is
    functional whenever your engine is operating, so you never have
    to be concerned about whether or not you are protected. The
    system will respond to a problem by sounding the warning horn
    for six seconds and/or reducing engine power in order to provide
    engine protection.
    If Engine Guardian has been activated, reduce the engine
    speed. The problem will need to be identified and corrected. The
    system must be reset before the engine will operate at higher
    speeds. Moving the throttle lever back to the idle position will
    reset the Engine Guardian system. If the Engine Guardian
    system has determined the reset has not corrected the problem,
    Engine Guardian will remain activated, limiting the throttle. The
    problem must be identified and corrected before Engine
    Guardian will allow the engine to reach a normal operating RPM.
    Fishing is a way of life. Teach your grandchildren to fish, hunt and enjoy the outdoors

  4. #4
    Join Date
    Mar 2011
    Location
    Wisconsin
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    Default

    When was the last time the water pump was replaced ? A big deal on the Opti`s usually change mine at max every two years. Have the thermostats been checked or looked at lately gunk like sand and mud gets caught up in them and they don`t function properly. Water out the pee hole has no bearing on weather the engine is getting enough cooling water. Check your small oil tank under the hood port side to make sure it is full if any air at all showing it needs to be bled. A few things for you to check out.

  5. #5
    Join Date
    Mar 2008
    Location
    oktaha, ok.
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    Default

    Water pump has not been changed since I've had boat, bout 3 years now.
    Thanks for the tips. I appreciate the responses you two have given.

  6. #6
    Join Date
    Mar 2011
    Location
    Wisconsin
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    Another good maintenance issue with the Opti`s which never gets done is the compressor is water cooled. There is a screen that filters the water going to the compressor and they become plugged with sand and debri causing air pump failure. There is a good write up on the BBC boards under Mercury forum on how to service this screen. Well worth doing.

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