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  1. #1

    Default Johnson Commercial 15hp

    I have a 15hp Johnson Commercial that i'm having problems determining the year - the number on the freeze plug
    is G3892973 - the first 9 may be a 3 - G3832973.
    Any help decoding this would be greatly appreciated.

  2. #2
    Join Date
    Sep 2010
    Location
    ontario
    Posts
    14,945

    Default Re: Johnson Commercial 15hp

    Pictures.-----Is this a motor with the 9.9 / 15 HP powerhead adapted to the 25 HP lower unit ?---Pictures make this easy-------1987 comes to mind for that model.

  3. #3

    Default Re: Johnson Commercial 15hp

    Quote Originally Posted by racerone View Post
    Pictures.-----Is this a motor with the 9.9 / 15 HP powerhead adapted to the 25 HP lower unit ?---Pictures make this easy-------1987 comes to mind for that model.
    Click image for larger version. 

Name:	motor_1844 2.jpg 
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ID:	18058
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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ID:	18057  

  4. #4

    Default Re: Johnson Commercial 15hp

    Quote Originally Posted by racerone View Post
    Pictures.-----Is this a motor with the 9.9 / 15 HP powerhead adapted to the 25 HP lower unit ?---Pictures make this easy-------1987 comes to mind for that model.
    I have a couple more pics but i'm not sure if i'm attaching them correctly - i've sent 2 pics - hope they worked

  5. #5

    Default Re: Johnson Commercial 15hp

    Quote Originally Posted by racerone View Post
    Pictures.-----Is this a motor with the 9.9 / 15 HP powerhead adapted to the 25 HP lower unit ?---Pictures make this easy-------1987 comes to mind for that model.

    Click image for larger version. 

Name:	motor_1846 2.jpg 
Views:	11 
Size:	55.6 KB 
ID:	18059

  6. #6
    Join Date
    Dec 2015
    Location
    maplevalley WA
    Posts
    4,750

    Default Re: Johnson Commercial 15hp

    Looking at the ignition coil i put it mid to late 90s? Give seaway marine a call they have the best books possibly ID with the serial number?
    It takes a nickle to go first class!
    If it aint broke dont fix it!!

  7. #7
    Join Date
    Sep 2010
    Location
    ontario
    Posts
    14,945

    Default Re: Johnson Commercial 15hp

    There is a commercial sticker on it but it does look like a standard 15 hp model.-------Looks to be a 94 / 95 model.

  8. #8
    Join Date
    Dec 2015
    Location
    maplevalley WA
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    Default Re: Johnson Commercial 15hp

    The long shaft extension does look like the 15hp housing!
    It takes a nickle to go first class!
    If it aint broke dont fix it!!

  9. #9

    Default Re: Johnson Commercial 15hp

    Quote Originally Posted by kimcrwbr1 View Post
    Looking at the ignition coil i put it mid to late 90s? Give seaway marine a call they have the best books possibly ID with the serial number?

    thanks for the help - I appreciate your time.

  10. #10

    Default Re: Johnson Commercial 15hp

    Quote Originally Posted by racerone View Post
    There is a commercial sticker on it but it does look like a standard 15 hp model.-------Looks to be a 94 / 95 model.
    Thanks for your time in responding - I've tried researching the difference between standard and commercial - all I find doesn't really explain much.

    Thanks again
    Mike

  11. #11
    Join Date
    Dec 2015
    Location
    maplevalley WA
    Posts
    4,750

    Default Re: Johnson Commercial 15hp

    Once you establish the model number then you may get lucky and find a oem manual. Your best bet is to call seaway marine in lynnwood WA weekdays before 4-5pm pacific time. They have a big sign on the gone fishing weekends.
    It takes a nickle to go first class!
    If it aint broke dont fix it!!

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