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Old 06-03-2018, 02:17 PM   #1
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No start from the generator

We have a 2009 Scepter with a 10k Onan generator that the starter won't
engage at times.I did verify that no 12 volts were at the starter when this happens.
Does anyone know the location of the starter relay and the starter solenoid?
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Old 06-04-2018, 07:17 AM   #2
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I have the service manual for our Onan 10 kW HDKCA generator. It does not say where the solenoid is located, but it suggests that it is probably visible once the top cover of the generator unit is removed. I am expecting the solenoid to be a part of the starter, similar to most automotive starters. The manual says there are three relays, located in a row above what they call the "intake resonator". It appears that K2 is the starter pilot relay. I hope that helps.
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Old 06-04-2018, 01:47 PM   #3
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If you have no power to the starter lugs on the back of the gen, you may want to check the 125A ANL fuse, in the rear run bay.
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Old 06-04-2018, 04:42 PM   #4
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Thanks for the replies,after messing with the wires for a couple of mintues the gen now starts and runs ok.
I had the same problem about a year ago so it's very intermittent.
at that time. I took the cover off and was checking for 12 volts to the starter and it started ok and has ran ever since until now,so that make me think relay or starter solenoid
Dave
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Old 06-05-2018, 01:24 PM   #5
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Wires under the gen cover?
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Old 06-06-2018, 05:53 AM   #6
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When you say the starter won't engage, do you mean it won't even 'spin' or do you mean it will spin but won't 'catch' and turn the genset?

I was chasing what I thought was a rat-chewing issue in my Endeavor, and found a big connector in the wire-bundle maybe a foot or so back from the front of the genset area. One of the pins in that connector had corroded and lost contact. Maybe you have a similar connector issue?
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Old 06-06-2018, 12:04 PM   #7
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The starter won't turn at all when its doing it and is not getting battery voltage to it.
I have 12.6 volts from the battery to the generator so all that checks good.
I think my problem is the relay is not sending anything to the starter solenoid or the starter solenoid is not sending 12 volts to the starter.
it has been starting ok the last couple of days
Dave
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