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  1. #1

    Default 1996 Mercury 2 stroke/ 4 cyl C40ELPTO - Thermostat Location

    1996 Mercury 2 stroke/ 4 cyl C40ELPTO.

    I have the OEM repair manual. Been through it five or six times. Cannot find section on how to change the thermostat. Looking at the motor - cannot determine where thermostat is. Maybe the thermostat is beneath the huge ignition module?

    Any help finding it in the manual or knowing where the thermostat is would be a big help.

    Thank you.

  2. #2
    Join Date
    May 2015
    Posts
    2,853

    Default Re: 1996 Mercury 2 stroke/ 4 cyl C40ELPTO - Thermostat Location

    Quote Originally Posted by mbp View Post
    1996 Mercury 2 stroke/ 4 cyl C40ELPTO.

    I have the OEM repair manual. Been through it five or six times. Cannot find section on how to change the thermostat. Looking at the motor - cannot determine where thermostat is. Maybe the thermostat is beneath the huge ignition module?

    Any help finding it in the manual or knowing where the thermostat is would be a big help.

    Thank you.
    I don't think those motors have a thermostat.

  3. #3
    Join Date
    May 2013
    Location
    TX.
    Posts
    746

    Default Re: 1996 Mercury 2 stroke/ 4 cyl C40ELPTO - Thermostat Location

    Pull up a parts list on your engine and scan that.

  4. #4

    Default Re: 1996 Mercury 2 stroke/ 4 cyl C40ELPTO - Thermostat Location

    Quote Originally Posted by Texasmark View Post
    Pull up a parts list on your engine and scan that.
    Thank you. I did this also, 2 sites, could not find. I just canít be that stupid. Yet, it alludes me.

    Here is the specific list for my engine. Cannot find: https://www.marineengine.com/parts/m...ts/sn/0G368744

  5. #5
    Join Date
    Sep 2010
    Posts
    24,397

    Default Re: 1996 Mercury 2 stroke/ 4 cyl C40ELPTO - Thermostat Location

    They have made those 4 cylinder motors since 1954 or so.----I have one of those.-----I do not believe these motors ever had a thermostat installed !!

  6. #6

    Default Re: 1996 Mercury 2 stroke/ 4 cyl C40ELPTO - Thermostat Location

    Quote Originally Posted by racerone View Post
    They have made those 4 cylinder motors since 1954 or so.----I have one of those.-----I do not believe these motors ever had a thermostat installed !!
    Interesting. If it has one, it might be under the huge black rectifier panel. Does your motor have this panel? Thank you.

  7. #7
    Join Date
    Sep 2010
    Posts
    24,397

    Default Re: 1996 Mercury 2 stroke/ 4 cyl C40ELPTO - Thermostat Location

    What is the serial # of your motor ?----And have you looked at a parts diagram for that serial #-----This should be easy for you to figure ot !!

  8. #8

    Default Re: 1996 Mercury 2 stroke/ 4 cyl C40ELPTO - Thermostat Location

    Quote Originally Posted by racerone View Post
    What is the serial # of your motor ?----And have you looked at a parts diagram for that serial #-----This should be easy for you to figure ot !!

    1996 Mercury 2 stroke/ 4 cyl C40ELPTO

    serial number: 0G368744

    Thank you

  9. #9

    Default Re: 1996 Mercury 2 stroke/ 4 cyl C40ELPTO - Thermostat Location

    I have the same outboard, from what my local shop was able to tell me there is none. its odd for sure. May i ask what your fuel consumption is like. I find it just nuts compared to my 30 hp seapro

  10. #10
    Join Date
    Nov 2011
    Location
    tennessee
    Posts
    5,519

    Default Re: 1996 Mercury 2 stroke/ 4 cyl C40ELPTO - Thermostat Location

    Stop looking as it does NOT have a t-stat...
    Pappys Sales and Service
    Owner and Factory Certified Technician
    Former racer KDBA (Kentucky Drag Boat Association)

  11. #11

    Default Re: 1996 Mercury 2 stroke/ 4 cyl C40ELPTO - Thermostat Location

    Quote Originally Posted by faztbullet View Post
    Stop looking as it does NOT have a t-stat...
    Thank you Sir!

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