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  1. #1
    Seaman Apprentice
    Join Date
    Jan 2006
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    Bryans Road, Md
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    48

    Default 1988 175 hp Johnson Water Flow Diagram

    I am having a heating problem with the right bank of cylinders on my 175 Johnson. I have changed T-stats and pressure releif fittings and pulled water jacket cover plates to check for blockage and everything is clean. I am having a little problem finding a schematic/diagram that shows the water flow for that motor. My next endeavor is to pull the right head and check the water deflectors but I would like to check the water flow before I pull the head. Anyone know where I can find water flow diagram for that motor?

    Thanks...

  2. #2
    Supreme Mariner
    Join Date
    Feb 2001
    Location
    Port Charlotte FL but never the same since hurricane Charlie
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    16,978

    Default Re: 1988 175 hp Johnson Water Flow Diagram

    The water flow diagram is in the service manual. Pull both heads. You'll end up needing to replace all 6 deflectors.

  3. #3
    Seaman Apprentice
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    Jan 2006
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    Bryans Road, Md
    Posts
    48

    Default Re: 1988 175 hp Johnson Water Flow Diagram

    Thanks for the info. That was what I had suspected.

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