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Results 1 to 8 of 8
  1. #1
    Join Date
    Sep 2008
    Location
    , Ky,
    Posts
    11

    Default OK i got this 150hp V-6 merc a

    OK i got this 150hp V-6 merc and I'm trying to get the speedo working. Does the line run to the lower gear unit and if so do i half to take the lower unite apart to pot the line in? I dont no the year but this is the SN#5708239.

  2. #2
    Join Date
    Nov 2005
    Location
    , il,
    Posts
    2,198

    Default "there is a very small hole in

    "there is a very small hole in the leading edge of the lower unit, its clogged with crap. somewhere on the line going to the lower unit to the boat is a splice. Disconnect the line and blow the line to the lower unit out with air. If the line is bad you will need to remove the lower unit to replace it. You can also remove the line at the gauge and blow back from there. Do not blow the gage up. The system works off of pressure, the faster you go the greater the pressure at the lower unit."

  3. #3
    Join Date
    Sep 2008
    Location
    , Ky,
    Posts
    11

    Default cant find the line coming from

    cant find the line coming from the lower unit??

  4. #4
    Join Date
    Nov 2005
    Location
    , il,
    Posts
    2,198

    Default "well it should run right up t

    "well it should run right up through the center towards the front clamp assembly.
    You don't have a pilot tube (white plastic) hanging off the back of the boat do you, that would be the other way of having the speedo hooked up"

  5. #5
    Join Date
    Nov 2005
    Location
    , il,
    Posts
    2,198

    Default "here you can get a pic of the

    "here you can get a pic of the lower unit, if the line is gone you will have to drop the lower to replace it. Its just a plastic line you can get at a local shop, hooked to a plastic tee.
    http://www.crowleymarine.com/parts.cfm"

  6. #6
    Join Date
    Sep 2008
    Location
    , Ky,
    Posts
    11

    Default "You don't have a pilot tu

    "You don't have a pilot tube (white plastic) hanging off the back of the boat do you, that would be the other way of having the speedo hooked up.........

    Yea I got one but it wont push the speedo in the water on the trailer poling it and speedo goes to 10 drops back down to 0.. "

  7. #7
    ikia's Avatar
    ikia Guest

    Default I always thought it was a pito

    I always thought it was a pitot tube.Some motors have them and some don't.

  8. #8
    Join Date
    Nov 2005
    Location
    , il,
    Posts
    2,198

    Default sorry for the spelling error.

    sorry for the spelling error. If you have the pitot tube then just blow that out. If you wish to use the orifice in the lower unit than it will have to be removed and the hose added. These speedo's are not very accurate at low speeds even when new.

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