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Thread: Cant find hub for chopper II mercury 25 seapro

  1. #1
    Team Member ice_spy's Avatar
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    Aug 2009
    NSW Australia
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    Default Cant find hub for chopper II mercury 25 seapro

    I have a 2008 mercury 25hp seapro. or known as the international. It is the same as the tohatsu engines. I dont think these are sold in the USA due to emissions laws.
    I have a mercury racing chopper II.

    Im having massive trouble trying to find the right hub. it is 10 spline, but is not the same 10 spline as early mercury 18- 20 25 hp like the XD model.

    It is 10 spline shaft, however the splines have a flatter edge than the early 25hp mercs.
    I cant find anything on the net, just bought a hub from the states and its the same hub i already have in my chopper. it dont fit.

    Anybody please help, this has been dragging on for months. I think the problem is the motors are not sold in the USA. its known as the interantional i see on some forums.
    I have searched the net for hrs and hrs, sent many emails to hub and prop suppliers, the last one said yes i have it, and thats the hub i just got now that is the same as what i have already........ totaly frustrated on this one. I know people here in aus run the 25hp class and use the same motor with the same prop. What am i missing?
    Please dont ask for serial number, it is no longer on the motor.

  2. #2
    Team Member fs5's Avatar
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    Jun 2008
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    have you tried yarn at propeller repairs on the goldy.he's a gun with smaller props.(07) 5532 8519

  3. #3
    Team Member
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    Dec 2004
    Lake Lanier (North of Atlanta, Georgia)
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    Default Try these guys...

    Propco Propellers

    I have seen some high performance 18/20/25hp Mercury props done by them.

  4. #4
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    Apr 2010
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    Default 10 spline tohatsu splines.

    Hi mate,
    I race 25hp boats here in Australia, I run the mercury sea pro 25hp (built in japan by tohatsu).

    I had the same issue when I bought a 10 by 18 merc chopper, even down to buying a wrong spline aswell- anoying!

    You need to get a spline through tohatsu as I did for that motor or maybee Ron Hill would know of where you could get one!.

    What dia and pitch did you get? have you got a nose cone on there yet?
    Good luck
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