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Old 07-04-2012, 06:34 PM   #1
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Onan Gen Starter Question

I need to take my MH into the shop to get the starter gear replaced on my Onan Marquis 5000 generator (son-in-law kept his finger on the starter button too long ). I guess it varies from MH mfg to mfg, but in general does the genny need to be pulled to do this? I crawled under and took a look and it seems to me like pulling the genny wouldn't be necessary, but I'm not an RV tech. Just don't want a repair shop to shoot me any bull about having to remove the Onan to do the repair.
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Old 07-04-2012, 07:25 PM   #2
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You need a generator tech, not an RV shop. Most Onan shops want to pull the generator to work on them and they have the equipment to do it easily, but each MH is different.

If you can see and touch the starter motor, why not do it yourself?

And are you sure its the motor? Not a typical failure point, no matter how long somebody holds the start key.
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Old 07-04-2012, 07:47 PM   #3
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Quote:
Originally Posted by Gary RVRoamer View Post
You need a generator tech, not an RV shop. Most Onan shops want to pull the generator to work on them and they have the equipment to do it easily, but each MH is different.

If you can see and touch the starter motor, why not do it yourself?

And are you sure its the motor? Not a typical failure point, no matter how long somebody holds the start key.
I think the starter motor itself is OK, but I'm pretty sure the gear is stripped from the sound I'm hearing.
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Old 07-05-2012, 12:27 AM   #4
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It was easy to replace the starter on my NHM Marquis 6500 LP Onan. No need to pull the generator out.

Just wish that Onan sold the replacement "bendix" part of the starter because my starter motor was fine, just the engagement was bad.
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Old 07-05-2012, 09:13 AM   #5
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So,....what kind of "sound" are your hearing. It might be a simple change out of the relay which, if bad, will cause a clicking sound when ya try to start it up. There was one less expensive relay Onan used which has a notorious reputation for failing, and is an easy fix. DO take it to an Onan shop and you'll get er done correctly.

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Old 07-05-2012, 10:45 AM   #6
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gen starter

if it looks like the starter is easy to get to, check out whether you are getting power to it. just use a 12v test light and go to the big post on the starter motor. if there is no power, work up the line to the relay, and finally to the back of the switch. that way, you are not just throwing parts at it. get a service manual. it has good picture s and diagrams. it will have a diagnostic procedure for the tests. there is no substitute for a service manual. if you can read, its not rocket science to check it out. remember your labor rate is $0.00.
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Old 07-05-2012, 02:58 PM   #7
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Thanks for all the tips. Starter itself is fine, the bendix is messed up. Went to Cummings and picked up the repair kit today, $45 for the kit.
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