720 Ringear question
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Garden Tractors
Forum Description: A great place to discuss the Simplicity and Allis Chalmers Garden Models
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=158866
Printed Date: 22 Feb 2025 at 4:40pm
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Topic: 720 Ringear question
Posted By: 720g
Subject: 720 Ringear question
Date Posted: 08 Mar 2019 at 11:28am
I have a 720 that could use a different ring gear. I know that they use a ten tooth starter, I have a new 9 tooth starter that that I got that was supposed to be a 10(Don't ask long story) can I get a ring gear for that starter? I was told that other applications went that way for faster starting. Any thoughts or ideas.. Thanks in advance John
I don't post much but I read the forums everyday, not only great info but some great entertainment
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Replies:
Posted By: Steve in NJ
Date Posted: 08 Mar 2019 at 4:30pm
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All the 620/720's that I've encountered were 9 tooth. Some of the 10 tooth versions according to some of my applicaition books + the internet were used in other Onan models, or used with the CCKA version of the Onan. I have a brand new 10 tooth on the shelf if your looking for the 10 tooth.
Steve@B&B
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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Posted By: 720g
Date Posted: 08 Mar 2019 at 7:03pm
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Thanks Steve I've got the original one needs some work but I've got a guy who can rebuild it. I got a new starter and it was wrong. I probably changed the numbers in my original post. I'll have to double check. Thanks for the reply. By the way that new harness works great was well worth the money.
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Posted By: 720g
Date Posted: 08 Mar 2019 at 7:16pm
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Do your books show what might use the 10 tooth starter? My 10 tooth starter is brand new just wondering if a ring gear for that might be available to fit the cckb. Either way I need to get a different ring gear.
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Posted By: Steve in NJ
Date Posted: 08 Mar 2019 at 10:27pm
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Glad you like the harness John! I'd give Brenda a call at Sandy Lake tomorrow and see if she can hook you up with a new ring gear. Not sure if they're available yet. Ya never know tho. She pulls a rabbit out of her hat sometimes. She's the best! Steve@B&B
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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Posted By: 720g
Date Posted: 09 Mar 2019 at 7:40am
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Thanks Steve they are not available new anymore. I talked to her already they might have a used one.
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Posted By: Acdiesel
Date Posted: 11 Mar 2019 at 10:51am
CHECK ON E-BAY UNDER ONAN CCKB.
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D19 Diesel,D17 Diesel SER.3
2-D14, 2-D15 SER.II WF/NF
D15 SER.2 DIESEL
D12 SER.I, D10 Ser.II
2-720'S D21 Ser. II
Gmc,caterpillar
I'm a pharmacist (farm assist) with a PHD (post hole digger)
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Posted By: 720g
Date Posted: 11 Mar 2019 at 9:14pm
Posted By: Steve in NJ
Date Posted: 11 Mar 2019 at 10:08pm
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John, I have a 620 parts Tractor. It has the engine in it. Couldn't tell you what condition of the flywheel ring gear is in, but unfortunately, I wouldn't be able to get to it cause its buried in the snow under a tarp at the present time. Probably wouldn't be able to get to look at it till Spring. I guess it doesn't do you any good right now, but I have a possibility.... Steve@B&B
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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Posted By: 720g
Date Posted: 13 Mar 2019 at 6:31pm
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Thanks Steve, I've got a old Simplicity dealer out here who is doing the same he has several engines to look at.
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Posted By: Steve in NJ
Date Posted: 14 Mar 2019 at 6:47am
That's a good thing! Maybe he can come up with somethin' for ya. Good luck!
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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