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Does anyone know what number CDI i should use?

Discussion in 'XJ Technical Chat' started by doublej, Nov 20, 2009.

  1. doublej

    doublej New Member

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    I have an 1981 xj650.I did a ground up on this bike and I dont have spark or a headlight.My coils are hot everything in the headlight seems to be hot but the headlight plug.I have a cdi off another bike but Im not sure its the right one if anyone can help.
     
    doublej, Nov 20, 2009
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  2. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    Isn't the '81 a TCI unit? I'd give you the numbers off mine but my 650 is an '82 Seca and I don't know if they're the same.

    The headlight isn't supposed to come on until the engine's running; that's normal behavior and OK.

    You may have a problem with one of the components of the safety circuit; if you unplug the safety relay and the bike starts then start wringing that out. Most common failure there is the sidestand switch because of its inhospitable location.
     
    bigfitz52, Nov 21, 2009
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  3. SQLGuy

    SQLGuy Well-Known Member

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    The SKU for the 81 Maxim 650 TCI is: 5V2-82305-10-00

    These are TCI based bikes. CDI units will not work on them unless you swap EVERYTHING (coils, pickups, adapt a rotor, ignitor, etc). And then you'd still probably have the wrong advance curve.

    This may help too: http://www.xjbikes.com/Forums/viewtopic ... tml#185964

    Cheers,
    Paul
     
    SQLGuy, Nov 21, 2009
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