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Fuel Cutoff Valves

Discussion in 'Technical Discussion' started by Mjkrawczy, Sep 8, 2023.

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  1. Mjkrawczy, Sep 8, 2023
    #1
    Mjkrawczy

    Mjkrawczy New Member

    Joined:
    May 26, 2023
    Messages:
    28
    Location:
    Muskegon Michigan
    1968 Matthews Sportfisher.
    More fun....
    Question on how to align the Fuel Valves to run Port Engine off STDB Tank.
    Have an issue with Port Tank.
    I believe I keep Port Tank Valve closed and open both Cross Over Valves between the two.

    Current Valves are from Republic Manufacturing.

    see attached pic..

    Attached Files:

  2. chesapeake46, Sep 9, 2023
    #2
    chesapeake46

    chesapeake46 Senior Member

    Joined:
    Jul 26, 2009
    Messages:
    1,831
    Location:
    Chesapeake Bay, Delaware Bay & S.Jersey
    Try to PM a guy here named Cleanslate. He also had a Matthews Sporty at one time
    He is the resident Matthews expert, I think.
  3. Capt Ralph, Sep 9, 2023
    #3
    Capt Ralph

    Capt Ralph Senior Member

    Joined:
    Sep 8, 2004
    Messages:
    13,499
    Location:
    Satsuma, FL
    Looks like two crossover valves (supply and return), should both be normally closed.
    I would SWAG, these crossover valves have been added.

    Time to follow the hoses.
    Label them and update your picture where the hoses go to/from.

    The main valves were probably just supply and return on / off from each engine to their fuel tank, originally.
  4. Pascal, Sep 9, 2023
    #4
    Pascal

    Pascal Senior Member

    Joined:
    Feb 29, 2008
    Messages:
    8,570
    Location:
    Miami, FL
    Drives me nuts when valves and hoses are not labeled on a boat. I have a labor printer and am always labeling everything. Eliminates the guess work when you re in a rush.
  5. Mjkrawczy, Sep 16, 2023
    #5
    Mjkrawczy

    Mjkrawczy New Member

    Joined:
    May 26, 2023
    Messages:
    28
    Location:
    Muskegon Michigan
    Evening Gents,
    Figured it out there just Cross Overs.
    Currently
    Have Port Closed and Running off STBD until I fix my Port Tank