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CB750 Nighthawk Engine Questions

This is a discussion on CB750 Nighthawk Engine Questions within the Technical forums, part of the Caferacer.net Forums category; See that big electrical lead coming out of the back of the motor? That's the +ve for the starter motor. Hook that up the +ve ...

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  1. #11
    Senior Member hillsy's Avatar
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    See that big electrical lead coming out of the back of the motor? That's the +ve for the starter motor. Hook that up the +ve of a battery and then just touch the -ve to the engine body (IE: ground). The starter will then engage.

    Take the spark plugs out before you try this.

  2. #12
    Senior Member TrialsRider's Avatar
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    … and since it won't be a fused circuit, make sure you don't over heat either the starter motor or the battery. Starter motors can burn out and batteries can explode.

  3. #13
    Senior Member hillsy's Avatar
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    Starter motors aren't on fused circuits - they use a solenoid.

    But yes - you will have a lot of current going through the circuit so don't run the starter for more than a few seconds at a time.

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  5. #14
    Senior Member TrialsRider's Avatar
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    … was only attempting to stress the most extreme scenario possible dangers that could arise in the simplest terms. Storage batteries are not to be trifled with and chances are the battery he has handy is one out of a car or truck. If for instance you drop a spanner across the terminals of a decent sized truck battery, (live short) really bad things will happen very quickly.

  6. #15
    Junior Member UniHalf's Avatar
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    Awesome. You guys are alright.

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