SportFour Upper Drive

Home Forum Ask A Member SportFour Upper Drive

This topic contains 10 replies, has 4 voices, and was last updated by Tubs Tubs 1 week, 3 days ago.

Viewing 11 posts - 1 through 11 (of 11 total)
  • Avatar
    hank1995
    US Member - 2 Years
    Replies: 19
    Topics: 11
    #186496

    I ran down a missing upper drive shaft and impeller. The impeller looks good and matches up with the housing. The drive shaft appears to be 1/2 inch too long even when fully seated in the crankshaft. Maybe from a different model? I could cut it down but I’m wondering if I am missing something obvious…

    SAM_3879

    SAM_3881-1

    SAM_3882

    SAM_3883

    • This topic was modified 1 week, 3 days ago by Mumbles Mumbles.
    Attachments:
    Avatar
    george-emmanuel
    US Member - 1 Year
    Replies: 385
    Topics: 20
    #186523

    If I’m seeing what I think is your concern, you are missing the point that the impeller is upside down on the shaft. The flat side of the impeller is supposed to be on the bottom, against the top of the gearcase.

    George

    Avatar
    garry-in-tampa
    Lifetime Member
    Replies: 3241
    Topics: 30
    #186527

    NO – The flat part goes against the housing. It picks up water from the center and throws into the outside (Centripetal Force) Early models had a different tiller arrangement. The drive shaft is Parkerized to prevent rust. Put the trimmed part at the top. Be sure the spline does not bottom out and bind the crank shaft.

    Avatar
    garry-in-tampa
    Lifetime Member
    Replies: 3241
    Topics: 30
    #186529

    P.S. – The rare 15 HP model 9039 Heavy Duty Twin used the same lower unit and gave the Sport Four a run for the money . . .

    Avatar
    hank1995
    US Member - 2 Years
    Replies: 19
    Topics: 11
    #186544

    Pls look at 2nd/4th pic again. The shaft on the lower right in pic 4 is the lower drive shaft. This is off a 39 and mine is a 35. Maybe they changed those dimensions at some point or it’s off another engine altogether.

    Avatar
    garry-in-tampa
    Lifetime Member
    Replies: 3241
    Topics: 30
    #186550

    Yes they did – trim it to fit.

    Avatar
    hank1995
    US Member - 2 Years
    Replies: 19
    Topics: 11
    #186551

    PS – Also – The guy tells me from an ELTO. Still looking for coils – otherwise coming right along.

    SAM_3886

    SAM_3868-1

    SAM_3885

    SAM_3873

    • This reply was modified 1 week, 3 days ago by Mumbles Mumbles.
    Attachments:
    Avatar
    hank1995
    US Member - 2 Years
    Replies: 19
    Topics: 11
    #186556

    Another PS: Pic 4 is the enrichment valve. The leather washer look remarkably good. Has anyone had any luck substituting another material or I suppose you could cut new ones from leather.

    Avatar
    george-emmanuel
    US Member - 1 Year
    Replies: 385
    Topics: 20
    #186616

    I sincerely apologize…..Garry is correct.

    George

    Avatar
    hank1995
    US Member - 2 Years
    Replies: 19
    Topics: 11
    #186636

    Still looking for coils – I’d like to use the original/correct coils but if I can’t round them up and want to get it to run then I have to find another solution.

    Tubs
    Tubs
    US Member - 1 Year
    Replies: 2456
    Topics: 148
    #186655

    Looking for coils those were used in several other models but
    the most common model would be the zephyr. You should be
    able to find some.

    Zephyr-coil-2

    Attachments:
Viewing 11 posts - 1 through 11 (of 11 total)

You must be logged in to reply to this topic.