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Help Second gear lock out on a ZXR?

Discussion in 'Kawasaki 250cc In-line 4's' started by Rossco_Perth, Apr 22, 2017.

  1. Rossco_Perth

    Rossco_Perth Confirmed Tinkerer :)

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    My Bike:
    Kawasaki ZX-2R (zxr250A)
    Just wondering if the ZXR has Kawasaki's 'positive neutral finder' that prevents up shifting to second when stationary?

    The reason I ask is that the original 250a motor that came with my bike allowed 1-6 shifts when stationary (engine off).
    That one had 45k km on it if it makes a difference - probably had a lot more Km really.

    The low km motor (another 250a motor) I've just put in my frame will not shift to second or higher when stationary. 1st & neutral is all I can get. The new motor/gearbox has 22,000 km on it.

    Bike can't be ridden yet, I'm waiting for my litetek Carby kits to arrive

    Anyone care to enlighten me?


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    Rossco_Perth, Apr 22, 2017
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  2. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Rock it back and forth and i think you might find it'll shift up through all the gear's,
    dog's and gear's need to mesh properly to be able to engage each gear
     
    • Agree Agree x 1
    my67xr, Apr 22, 2017
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  3. Rossco_Perth

    Rossco_Perth Confirmed Tinkerer :)

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    Tried that, no dice


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    • Bummer Bummer x 1
    Rossco_Perth, Apr 22, 2017
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  4. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Yes, ZXR's have a positive neutral finder and it prevents you going into 2nd gear when stationary.
     
    • Agree Agree x 3
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    Linkin, Apr 23, 2017
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  5. Rossco_Perth

    Rossco_Perth Confirmed Tinkerer :)

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    Thank you!

    I was confused because the original motor didn't lock me in neutral, maybe that can be put down to it's high Km or being flogged to an inch of it's life?
     
    Rossco_Perth, Apr 23, 2017
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  6. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Sounds like your replacement engine is a C model, where your original was an A model. I don't believe the A models had a positive neutral finder, but others here who own can confirm.

    Check the underside of the clutch cover area (facing the ground) for your engine number.
     
    Linkin, Apr 23, 2017
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  7. Rossco_Perth

    Rossco_Perth Confirmed Tinkerer :)

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    Both motors are A's - the newer one is 1500 units after the bike's original.


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    Rossco_Perth, Apr 23, 2017
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  8. gregt

    gregt Well-Known Member Premium Member

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    It's an abomination...I've taken it out of every kawasaki motor I've built as a race unit - and most of the road ones too.
    Most of the time with push start race bikes you push in 2nd gear - so removal of the balk parts is neccessary.
    Oldest I've found it in was a Z650 - and I recently pulled it out of a turbo'd 1400 for a sports car..

    It's a full strip though to get to the gearbox shafts - and the use of 3 narrow strips of shim to hold the balls in place while sliding the gear off over them is recommended...
     
    • Informative Informative x 1
    gregt, Apr 23, 2017
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