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  1. #1
    CB750 New Member rbattles's Avatar
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    Jun 2020
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    Jacksonville, AR
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    76 CB750 Voltage drop

    Trying to rework an old 750 but can't get past the electric system. When charging it shows 12.4 volts. Turn the key on and it drops to 11.2 volts. After some testing found the problem goes away if I unplug the generator.

    Is this normal or do I have a problem? What tests can I run and what readings should be expected?

    NOTE: The bike was in storage for 9 years and previous owner couldn't answer any questions.

  2. #2
    CB750 Addict Medyo Bastos's Avatar
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    Oct 2012
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    Mid South
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    Retest at 1/4 throttle; 1/2 throttle, and full throttle...


    Sent from my iPhone using Tapatalk

  3. #3

  4. #4
    CB750 New Member rbattles's Avatar
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    Jun 2020
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    Jacksonville, AR
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    Quote Originally Posted by Medyo Bastos View Post
    Retest at 1/4 throttle; 1/2 throttle, and full throttle...


    Sent from my iPhone using Tapatalk
    The bike doesn't do anything; trying to get it running. Have replaced most of the electric system as I find defects.

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