1996 kawasaki 750 sts cdi question
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  1. #1
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    1996 kawasaki 750 sts cdi question

    what is the best aftermarket cdi box. is the SBT one any good. also how do I test if my cdi is bad?
    Last edited by rchpi36; 06-03-2022 at 08:32 PM.

  2. #2
    PWCToday.com Is My Home Away From Home Bionic racing's Avatar
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    Re: 1996 kawasaki 750 sts cdi question

    None

  3. #3
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    Re: 1996 kawasaki 750 sts cdi question

    Great timing on this! I'm currently waiting on a WSM cdi for an STS!! I'll let you know how it works out but I've used SEVERAL WSM cdi's for various models and they have all worked so far.
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    Re: 1996 kawasaki 750 sts cdi question

    See if the Zeeltronic cdi is compatible with the 750.

  5. #5
    PWCToday.com Is My Home Away From Home wmazz's Avatar
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    Re: 1996 kawasaki 750 sts cdi question

    Why do you think the cdi is bad?

    Heat and vibration kills electrical parts.

    Quote Originally Posted by rchpi36 View Post
    also how do I test if my cdi is bad?
    Through the process of elimination.


    Bill M.
    Horsepower == Speed, RPM != Speed



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    Re: 1996 kawasaki 750 sts cdi question

    so what happened was I was coming off of wide open throttle when it died. tried to restart and would not, when I got it on the trailer I found that I had lost spark. so I ohm the coil and found the secondary side was open. replaced coil and had the same issue. I have ohm the pickup coil and it is within specs. so from my understanding the only thing left is the cdi box

  7. #7
    PWCToday.com Is My Home Away From Home wmazz's Avatar
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    Re: 1996 kawasaki 750 sts cdi question

    Quote Originally Posted by rchpi36 View Post
    I found that I had lost spark. so I ohm the coil and found the secondary side was open.
    Kawasaki 650 / 750 coil wires tend to break. That was most likely
    your open.

    You are testing spark on both plug wires grounded? Because it
    is a wasted spark ignition, both spark plugs fire at the same time,
    but only if both spark plugs are grounded.

    Quote Originally Posted by rchpi36 View Post
    so what happened was I was coming off of wide open throttle when it died. tried to restart and would not,
    when I got it on the trailer I found that I had lost spark.
    How you lost spark is a little strange. Usually spark disappears
    after the engine warms up, maybe 10 to 30 minutes and it fails,
    and after the engine cools down for a few hours, it works again.

    I have been told by instructors, at manufacture clinics , etc that
    cranking over an engine without the spark plugs grounded can cause
    damage to an ignition system, but I have not ever seen an example.
    Maybe something failed when the coil wire broke??

    The manual is a little vague when it comes to testing the stator,
    but Kawasaki gave me specs for the small pin 750. Your big pin
    stator should be nearly the same.

    This is an ACv test for the stator and pick-up coil. You need to
    access the stator wire connectors at the e-box. Leave the wires
    connected and stick the multimeter probes into the back or front
    of the connectors and make contact with the wire terminals. Then
    follow the instructions and crank over the engine.

    Report your results.

    Spark plugs installed.
    Spark plug caps grounded to the e-box.
    Tether in place.
    All wires still connected.
    Set multimeter to AC volts
    Insert multimeter probes into plastic connectors to make contact with each wire terminal.
    Crank over engine and measure AC voltage. Max should be less than 100 acv.

    Pick-up Green / Blue =
    Exciter coil Red / Purple =
    Trigger coil Red / Black =


    Bill M.
    Last edited by wmazz; 06-06-2022 at 12:56 AM.
    Horsepower == Speed, RPM != Speed



  8. #8
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    Re: 1996 kawasaki 750 sts cdi question

    green / blue 1.1 Vac
    red / purple .8Vac
    red /back .9Vac

    so I assume with those readings I need a stator
    Last edited by rchpi36; 06-06-2022 at 07:42 PM.

  9. #9
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    Re: 1996 kawasaki 750 sts cdi question

    Red to purple while cranking should be 50 volts or more. Does either red or purple also read any ohms to ground?
    http://www.facebook.com/twinlakesjetskirepair

    '89 Kawi 650SX 42.4 GPS
    +3" stock pipe, ported ex. manifold, drilled waterbox, blueprinted pump, Ocean Pro ride plate

    '99 Yama GP1200 65U 61.8 GPS
    ported cylinders, matched cases, milled head, blueprinted pump, long ride plate

    '96 Seadoo HX 717 53.13 GPS
    light porting, massaged cases, lightened flywheel, port matched manifolds, Rossier pipe, stubby pump cone

  10. #10
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    Re: 1996 kawasaki 750 sts cdi question

    20220612_110112.jpg20220612_110056.jpg20220612_110054.jpg20220612_110047.jpg

    So I ordered a new stator. I removed the old one and saw it looks like it was rubbing. What would cause that?

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