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1988 175 hp Johnson Water Flow Diagram

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  • 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
    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.

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    • #3
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      Re: 1988 175 hp Johnson Water Flow Diagram

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

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