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  1. P

    Johnson 150 25” Shift rod measurement

    My brother has asked me to help him swap a used lower unit on his 1995 Johnson 150(J150EXEOM) . I know in the past I have read on this forum the proper shift rod length, but I have searched for this information and cannot locate it. Can someone post the proper measurement?Also should the shaft...
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    Test prop part number

    I am in search of a test prop for early thru hub 35 hp omc engines. 1977 to 1980. Does anyone have a part number or know of an online reference for part numbers? Many listed online for sale but most are listed by the part number only. Without knowing what number I am looking for makes it hard to...
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    25 hp upper shift rod replace

    I recently aquired a 1993 25 hp model J25RETS. The upper shift rod is broken at the very bottom. About 3/8 of an inch is gone right where the plastic keeper goes. My question is do I have to remove the power head to replace it. Changed the oil in lower unit and it looked good and lower shifts...
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    Spark plug question

    I have a 150 hp Johnson 1995 model(J150EXEOM).When looking up spark plugs on this site I first went to the parts page for this model and open the spark plug page common replacement parts and it lists QL77Jc4 as the correct plug.But if you go to the exploded diagram page for the crankcase it...
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    Spark plug question

    I have a 150 hp Johnson 1995 model(J150EXEOM).When looking up spark plugs on this site I first went to the parts page for this model and open the spark plug page common replacement parts and it lists QL77Jc4 as the correct plug.But if you go to the exploded diagram page for the crankcase it...
  6. P

    Spark plug question

    I have a 150 hp Johnson 1995 model(J150EXEOM).When looking up spark plugs on this site I first went to the parts page for this model and open the spark plug page common replacement parts and it lists QL77Jc4 as the correct plug.But if you go to the exploded diagram page for the crankcase it...
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    QD-18 1957 lower unit seals

    I am looking to reseal the lower unit on a 1957 Qd-18.There is not a complete kit listed that I can find. All kits that I can locate list a kit for starting with 1958 but nothing for 1955-57. Does Sierra or OMC make a kit for the earlier model QD's? Are the lowers on 1955-57 different than...
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