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Pinned Identifying your FZR250 - bodywork , frame , engine , carburetors

Discussion in 'Yamaha 250cc In-Line 4's' started by GreyImport, Mar 19, 2015.

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  1. GreyImport

    GreyImport Administrator Staff Member The Big Cheese Contributing Member

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    My Bike:
    *Kawasaki ZXR250C *Yamaha FZR250R 3LN1 *Suzuki GSX250 *Triumph Bonneville 750 T140V *Triumph Daytona 675
    How to identify your bike ....
    The basis of your motorcycle is the frame .... but theres a possibility the engine has been replaced or the carburetors are from a different model.

    The obvious visual difference is the body work , specifically the headlight configuration and the tail lights.

    3LN1 front and rear

    3LN1 front.jpg 3LN1 rear.jpg


    3LN3+ front and rear

    3LN3 + front.jpg 3LN3 + rear.jpg

    The earlier model 2KR has the skinny steel frame and single front disc ..... 3LN has the Deltabox frame and twin front discs

    2KR

    2kr frame.jpg


    3LN


    deltabox.jpg


    Location of frame number on the headstock

    headstock.jpg

    Locations for the engine number

    3LN1 has an internal oil filter
    3LN3 onwards has external spin on oil filter

    engine number.jpg IMGP1555 (Small).JPG engine number 3.jpg
    engine number 2.jpg


    Model Information

    Fzr250 Model Information.png

    Carburetor Identification

    Carburetors had design changes and improvements from the 3LN1 to the 3LN3/5 to the 3LN6/7

    Please refer to http://litetek.co/ReplacementPartsYamaha.html for more information


    Jet housing configuration

    Jet housings difference.jpg

    Jet housings.jpg

    Needle setup

    needle 1-3-5.jpg CarbNeedleAssembly 6-7.jpg

    Slide cutaway

    cutaway 1.jpg cutaway.jpg

    Float Bowl

    float bowls.jpg


    Main Idle Knob

    Idle knob.jpg

    Oil Filter

    3LN1 : Internal
    3LN3 - 3LN7 : External spin on

    Oil filters 3LN.jpg

    Output Shaft and Sprocket


    3LN1 uses a longer collar(24) on the shaft therefore later models need a thicker sprocket

    collar.jpg


    3LN3 - 3LN7 sprocket

    http://litetek.co/Sprocket_Drive_Yamaha_FZR250_3LN3.html

    Sprocket-001.jpg

    front sprocket.jpg





     
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  2. GreyImport

    GreyImport Administrator Staff Member The Big Cheese Contributing Member

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    My Bike:
    *Kawasaki ZXR250C *Yamaha FZR250R 3LN1 *Suzuki GSX250 *Triumph Bonneville 750 T140V *Triumph Daytona 675
    Carb Bank 2.jpg Carb Bank.jpg
     
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  3. Phil

    Phil Senior Member Premium Member Contributing Member

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    My Bike:
    Suzuki GT250X7 Kawasaki ZZR600
    Very well done Grey, best ID for the FZR series.:thumb_ups: Feel certain this will assist many venturing down the FZR track.
     
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