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  1. #1
    Join Date
    Aug 2018
    Location
    SE New England
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    29

    Default What am I looking at here?

    I just got this boat home and need to sort it our a bit. By the attached pic, someone has bypassed an overload switch of some sort Klixon switch with red wires attached to one terminal). What was it supposed to protect? And what is the other, similar looking device with heavy red wires attached?Click image for larger version. 

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  2. #2
    Join Date
    Sep 2010
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    22,826

    Default Re: What am I looking at here?

    I have no idea what motor you are working on.----Please do tell.-----Posting more pictures might help YOU as well.

  3. #3
    Join Date
    Aug 2018
    Location
    SE New England
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    29

    Default Re: What am I looking at here?

    Quote Originally Posted by racerone View Post
    I have no idea what motor you are working on.----Please do tell.-----Posting more pictures might help YOU as well.
    Ooh, sorry. It's a carburetted, FWC, PCM 5.7 with Mercruiser I/O in a 1987 Slickcraft. A couple more pics of the motor. the device in question is located on top of the fuel filter on the starboard front side of the engine:
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Last edited by swampyankee; 11-23-2021 at 04:15 PM.

  4. #4
    Join Date
    Aug 2018
    Location
    SE New England
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    29

    Default Re: What am I looking at here?

    Last edited by swampyankee; 11-23-2021 at 04:20 PM.

  5. #5
    Join Date
    Dec 2006
    Location
    Greenfield Me. USA
    Posts
    6,223

    Default Re: What am I looking at here?

    Ayuh,..... Donno what that is with the single wire on it,......
    The slave solenoid is the other thingy with the other red cables attached to it,.....
    Any Grease is Better,... Than No grease at All....

  6. #6
    Join Date
    Aug 2018
    Location
    SE New England
    Posts
    29

    Default Re: What am I looking at here?

    Quote Originally Posted by bondo View Post
    Ayuh,..... Donno what that is with the single wire on it,......
    The slave solenoid is the other thingy with the other red cables attached to it,.....
    Pardon my ignorance but what is a "slave solenoid"

    Also, the other thingy that has both red wires tagged to one side has a reset button on the back and appears to be a thermal or overcurrent protection. The LM318s in my Silverton had one each sticking out of the plastic cover for the ignition electrics on the engine.

  7. #7
    Join Date
    Dec 2006
    Location
    Greenfield Me. USA
    Posts
    6,223

    Default Re: What am I looking at here?

    Quote Originally Posted by swampyankee View Post
    Pardon my ignorance but what is a "slave solenoid"

    Also, the other thingy that has both red wires tagged to one side has a reset button on the back and appears to be a thermal or overcurrent protection. The LM318s in my Silverton had one each sticking out of the plastic cover for the ignition electrics on the engine.
    Ayuh,..... If the thingy with the wires on one post, has a reset button on it, it's a circuit breaker,......

    Boats use a slave solenoid to excite the starter's solenoid, rather than straight from the key switch, so that the starter's solenoid gets full battery voltage, 'n not the voltage loss runnin' power twice the length of the boat on little tiny wires, to, 'n from the key switch,.....
    Any Grease is Better,... Than No grease at All....

  8. #8
    Join Date
    Aug 2018
    Location
    SE New England
    Posts
    29

    Default Re: What am I looking at here?

    Quote Originally Posted by bondo View Post
    Ayuh,..... If the thingy with the wires on one post, has a reset button on it, it's a circuit breaker,......

    Boats use a slave solenoid to excite the starter's solenoid, rather than straight from the key switch, so that the starter's solenoid gets full battery voltage, 'n not the voltage loss runnin' power twice the length of the boat on little tiny wires, to, 'n from the key switch,.....
    Ok, so the signal goes from the key switch to a relay (slave solenoid) which powers the contacts on the starter solenoid? I don't recall seeing that on any other boat I had but ok...

  9. #9
    Join Date
    Jun 2006
    Location
    Spotswood, NJ, USA
    Posts
    5,478

    Default Re: What am I looking at here?

    used on almost all boats due to the length of the wires from the helm to the motor

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