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Author Topic: Starter Moter Stuck Engaged with Ignition Off, 1976 CB750f  (Read 1141 times)

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Offline Robmanda1

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Starter Moter Stuck Engaged with Ignition Off, 1976 CB750f
« on: May 08, 2011, 03:58:29 PM »
Funny thing happened yesterday.  I started my 750f yesterday and the starter motor was stuck engaged.  I turned the ignition off and it kept turning over.  I eventually had to disconnect the battery to turn turn off the starter.  I separated some wires near the battery and eventually it went back to normal operation.  What happened?  Could it be the ignition or some wires near the battery?

Rob
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Offline TwoTired

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Re: Starter Moter Stuck Engaged with Ignition Off, 1976 CB750f
« Reply #1 on: May 08, 2011, 04:30:49 PM »
Starter Solenoid contact fused.

Take apart, dress contacts and you are probably good for another 10-15 years.

Cheers,
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Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline Robmanda1

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Re: Starter Moter Stuck Engaged with Ignition Off, 1976 CB750f
« Reply #2 on: May 08, 2011, 04:47:28 PM »
Sorry for ridiculous question, but where is the solenoid?  Near the battery or starter motor?
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Offline Kevin400F

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Re: Starter Moter Stuck Engaged with Ignition Off, 1976 CB750f
« Reply #3 on: May 08, 2011, 04:50:58 PM »
Follow the positive battery cable from the battery to the first component it connects to....that can-like component with the two big studs on top is the solenoid.
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Offline TwoTired

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Re: Starter Moter Stuck Engaged with Ignition Off, 1976 CB750f
« Reply #4 on: May 08, 2011, 04:52:48 PM »
Under the left side cover.  There will be two large posts for big cables.  (Do disconnect the battery terminals before the attack with tools.)

If you aren't confident with your mechanical prowess, it is probably best to just buy a replacement solenoid, and put that in.

Cheers,
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Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline Robmanda1

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Re: Starter Moter Stuck Engaged with Ignition Off, 1976 CB750f
« Reply #5 on: May 08, 2011, 05:58:41 PM »
Thanks for the information gentlemen.  I am always reluctant to do any work there as the wiring looks like its about to disintegrate.  I was able to clean the posts, some rust.  If it happens again I will just replace the solenoid.   
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Offline scottly

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Re: Starter Moter Stuck Engaged with Ignition Off, 1976 CB750f
« Reply #6 on: May 08, 2011, 06:56:48 PM »
Quote from: Robmanda1 on May 08, 2011, 03:58:29 PM
I separated some wires near the battery and eventually it went back to normal operation.

 I am always reluctant to do any work there as the wiring looks like its about to disintegrate.
Rob
Sounds like you may have some failed insulation on those wires that "shorted" together, turning the starter motor? (If the solenoid contacts had fused together, separating the wires wouldn't have helped.)
Now, start of hi-jack! ;D
I see you are in Cottonwood: I'm just on the other side of the Mingus MTNs from you, in Humboldt. You missed the relay two weeks ago!! :o Thinking of taking a short ride up to Jerome soon...
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Don't fix it if it ain't broke!
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