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big farmer 
Bronze Level
Joined: 28 Sep 2017
Location: wny
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 Topic: 720 corn chopper problems
Posted: 28 Sep 2017 at 7:39pm |
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we have a 720 corn chopper it was not used very much when we got it it has worked well last year we cleaned it up at the end of last year and put it in the barn this year i pulled it out greased it checked ti over and hooked it up to the 3020 jd tractor went to chop corn it would not make 10 feet with out pluging the chute it would not blow to the wagon we tried everything we could think of it will blow a bale of straw threw ti just fine we dont know what is wrong thanks for any help
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grinder220
Orange Level
Joined: 11 Jan 2012
Location: Clinton Iowa
Points: 2367
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Posted: 28 Sep 2017 at 7:53pm |
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How fine is it chopping? Is it a 540 or 1000 rpm PTO? Sounds like your not getting enough rpms out of the cylinder or the knives are wore to the point they wont throw the silage which I've never seen. Are they the correct cut and throw knives?
Edited by grinder220 - 28 Sep 2017 at 7:57pm
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big farmer
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Location: wny
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Posted: 28 Sep 2017 at 8:05pm |
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it has the throw knives not chopping to fine havent changed any thing from last year
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big farmer
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Posted: 28 Sep 2017 at 8:08pm |
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540 pto even changed tractors to our 966 ih which has plenty of power to run a one row chopper
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HD6GTOM
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Joined: 30 Nov 2009
Location: MADISON CO IA
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Posted: 28 Sep 2017 at 8:11pm |
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A little rust on the head and chute will cause that. Old Oliver had to be run over a few acres and get it slicked up. After that it was ok till next year when we had to do it all over again.
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ac-mike
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Joined: 14 Sep 2009
Location: Kentucky
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Posted: 29 Sep 2017 at 8:22am |
Ran one of those choppers for years. First, you have to keep in mind it is a cut and throw machine. It does not blow forage into wagon. It should handle corn silage without a lot of trouble, but haylage was always a different matter. If you have the operators manual it describes how to set the deflection pan to aim the throw of material at the best angle to get the best throw through the chute to the wagon. When chopping light haylage you had to try for every advantage to load the rear of wagons. As I stated, I never had trouble with corn silage, but after eliminating any obvious defects this is an adjustment I would be looking at.
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D-12III, 200D, 170G, HD-3, D19D 3pt, D17D High Crop, WD45G p/s, D15IID, D15IIG, D15G IND, 655, (3)WD45D p/s, 700, 816
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big farmer
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Posted: 29 Sep 2017 at 12:32pm |
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i dont have a manual how do i set the deflection pan
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Bryan L
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Location: SW Idaho
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Posted: 29 Sep 2017 at 8:07pm |
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I have an operators manual for the 720 forage harvester and another
operators manual for the corn head attachment for the 720.
$25.00 for both includes shipping.
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