Thread: fuel line

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  1. #1
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    fuel line

    on a 250 mercury if I am correct use 3/8 from tank to bulb and 1/4 from bulb to motor, trying to keep bulb below deck, how long can the1/4 in line be ,, is there a minimum

  2. Member Bob G.'s Avatar
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    #2
    Post on Mercury forum. 3/8" from tank to bulb, 5/16" from primer bulb to pulse pump.
    2006 Triton TR-21 XD, Mercury 225 Pro XS, S/N 1B287870

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    #3
    do they make a bulb with 3/8 and 5/16 ends

  4. Member Bob G.'s Avatar
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    #4
    The last Mercury primer bulb I put on my boat was able to do both.
    2006 Triton TR-21 XD, Mercury 225 Pro XS, S/N 1B287870

  5. Member
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    #5
    Quote Originally Posted by 250xb river rat View Post
    do they make a bulb with 3/8 and 5/16 ends
    I just did this OEM bulb and fuel lines. Both sizes fit. The supplied plastic clamps only fit on the 5/16" hose. It leaked a couple of weeks later and I put a hose clamp on.
    1997 Ranger 692VS
    2014 Mercury 175 Pro XS 2B111166

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    #6
    Don't mean to hijack your post but it got me to wondering. Ranger Z 20 tank to bulb is 3/4 o.d. and bulb to lift pump is 5/8 o.d., what would the i.d. Be ?
    Comanche20 (Don)
    2008 Ranger Z 20, 225 RUDE
    Ultrex 45/36/112
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  7. Member Bob G.'s Avatar
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    #7
    Quote Originally Posted by Ranger Rod View Post
    I just did this OEM bulb and fuel lines. Both sizes fit. The supplied plastic clamps only fit on the 5/16" hose. It leaked a couple of weeks later and I put a hose clamp on.
    Should be using radius head ty-wraps.
    2006 Triton TR-21 XD, Mercury 225 Pro XS, S/N 1B287870