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Author Topic: CB750 charging issue  (Read 869 times)

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76rudeboy

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CB750 charging issue
« on: August 09, 2011, 08:50:36 AM »
new battery, changed rectifier...still low volts on rectifier.
do you think its the stator? and or rotor?
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KingCustomCycles.com

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Re: CB750 charging issue
« Reply #1 on: August 09, 2011, 09:02:52 AM »
Stator or voltage regulator, maybe wiring, check per manual. Here is a schematic that shows the charging system simplified.
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Offline andy750

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Re: CB750 charging issue
« Reply #2 on: August 09, 2011, 09:04:21 AM »
Also check the wires under the gear cover that hook up the harness to the stator. Mine were frayed and this caused the problems you were experiencing.

Good luck
Andy
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Current bikes
1. CB750K4: Long distance bike, 17 countries and counting...2001 - Trans-USA-Mexico, 2003 - European Tour, 2004 - SOHC Easy Rider Trip , 2008 - Adirondack Tour 2-up , 2013 - Tail of the Dragon Tour , 2017: 836 kit install and bottom end rebuild. And rebirth: http://forums.sohc4.net/index.php/topic,173213.msg2029836.html#msg2029836
2. CB750/810cc K2  - road racer with JMR worked head 71 hp
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Offline excerpt

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Re: CB750 charging issue
« Reply #3 on: August 09, 2011, 11:14:23 AM »
You may have a new rectifier, but how ugly are the connections that it plugs into?

I just changed all the connections on my 74 CB750.
They were as bad as bad could be. They looked like they had been in davy jones's locker at the bottom of the ocean for 100 years.
Charges perfectly now. Pop a few of them out and check them. If you need to replace them, go here to get what you need: http://www.oregonmotorcycleparts.com/connectors.html

You don't have to buy their crimping tool, but you are going to need one.
« Last Edit: August 09, 2011, 11:17:48 AM by excerpt »
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