620-720
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=194212
Printed Date: 27 Nov 2024 at 12:38am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 620-720
Posted By: DaveWisc.
Subject: 620-720
Date Posted: 23 Mar 2023 at 8:14am
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What is the main differences between these?
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Replies:
Posted By: AcFordHawk
Date Posted: 23 Mar 2023 at 7:29pm
Dave, the one major difference I noted is the front axle on the 720 is heavier duty then the 620 although some of the early 720s still had the lighter duty axle. Know a couple other items escape me on the differences.
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IB (restoring), MF GC1705, MF 2705E
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Posted By: AC720Man
Date Posted: 23 Mar 2023 at 8:29pm
Biggest difference was decals, but the 720 came with more options available
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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Posted By: HudCo
Date Posted: 23 Mar 2023 at 10:05pm
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a bunch of the pto stuff is differant if i rember right but mine is a 616 with a lot of 720 stuff on it
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Posted By: AC720Man
Date Posted: 24 Mar 2023 at 8:32pm
I’m not aware of any implement differences. 2,000 rpm pto throughout the series. I have a tiller from the 616 era that works perfectly on my 720.
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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Posted By: AcFordHawk
Date Posted: 25 Mar 2023 at 9:42am
616 started out with multi piece/hanger bearing PTO shaft from engine to transmission and downdraft carburetor 16 hp Onan. 620/720 are one piece PTO shaft and have side draft carburetor 19/20 hp Onan. Same internal spline PTO connection for implements. 616 and early 620 also had narrower rear fenders.
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IB (restoring), MF GC1705, MF 2705E
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Posted By: LindaJohnson
Date Posted: 31 Mar 2023 at 6:23am
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Which one is better? There is a significant difference.
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Posted By: AcFordHawk
Date Posted: 31 Mar 2023 at 10:37am
720 with the heavy duty front axle if using a loader otherwise the 620 will do fine. 620 I had handled everything including the 52" snowblower. Used the snowblower and 60" mower on my 400' drive plus areas of our association common 1 mile driveway.
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IB (restoring), MF GC1705, MF 2705E
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Posted By: DaveWisc.
Date Posted: 24 Apr 2023 at 8:21pm
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Looking at 616 what are the bad parts of this tractor 16 hp vs 20 and other things???
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Posted By: Steve in NJ
Date Posted: 24 Jun 2023 at 9:27am
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The wiring is a little different on 616 than the 620/720. Also the charging system is better on the 620/720 models.... 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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