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  1. #1
    Member
    Join Date
    May 2005
    Location
    Lees Summit MO
    Posts
    8,167

    Stupid question here

    On my 97 181, the fuel fill cap has a screw knob on the upderside of the cap. I know this is some type of fuel system air regulator but can someone tell me how it works and where it should be set?

    Thanks,
    Terry

  2. Banned
    Join Date
    Mar 2006
    Location
    Rock Hill, SC
    Posts
    3,051
    #2

    Re: Stupid question here (catchatoad)

    Never noticed that on mine -- I would guess it's to allow air to escape?? Interested to hear the answer too...

  3. Member
    Join Date
    Jul 2005
    Location
    Northport, AL
    Posts
    667
    #3

    Re: Stupid question here (catchatoad)

    I noticed that also the other day when I thought I could siphon gas out of my boat, but I am glad to know that I cant.
    2016 Phoenix 618 Pro / Mercury 175 Pro XS

  4. Banned
    Join Date
    Aug 2004
    Location
    Hubbard, Ohio
    Posts
    12,387
    #4

    Re: Stupid question here (JackJ)

    <TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JackJ &raquo;</TD></TR><TR><TD CLASS="quote">I noticed that also the other day when I thought I could siphon gas out of my boat, but I am glad to know that I cant.</TD></TR></TABLE>

    bet ya can! Ya didn't try hard enough!

    That is an air vent. Not sure how far it's supposed to be open though.???



  5. Member
    Join Date
    Jul 2008
    Location
    Leoma TN
    Posts
    173
    #5

    Re: Stupid question here (OhioChamp183)

    <TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by OhioChamp183 &raquo;</TD></TR><TR><TD CLASS="quote">

    bet ya can! Ya didn't try hard enough!

    That is an air vent. Not sure how far it's supposed to be open though.???


    </TD></TR></TABLE>


    when gas was 4.70 here in California a few months back I took 20 gallons from my boat!!!! LOL

  6. Member
    Join Date
    Feb 2007
    Location
    High Rock Lake North Carolina
    Posts
    1,202
    #6

    Re: Stupid question here (catchatoad)

    On my 2006 203, it's an air vent. You can unscrew it to clean the filter that is up in there. It's a screen, designed to keep the bugs outa your fuel, and still have a good vent system and no extra vent punched thru the fiberglass.

    The only reason it unscrews is to clean the screen if needed. It has no adjustment at all..

    Richard
    ChampioN/Mercury
    High Rock Lake NC

  7. Member
    Join Date
    Mar 2006
    Location
    Baldwin City, Kansas
    Posts
    1,116
    #7

    Re: Stupid question here (203)

    Agree with 203.

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