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Western Oregon | I've had that problem with a 718 and 890. Everyone else has pretty much given the best ideas.
1. Adjust the stalk bumper so the corn is feeding in at the correct angle.
2. Make sure the feedroll tension is cranked down tight.
3. Feedroll speed a little faster than the head is delivering the corn
4. Make sure all the rolls are driving. The drive sprockets can slip on the splined shaft and you don't always see it. One of the rolls has a shaft all the way through it which I think has a keyway. So the shaft can be turning and the rolls not.
5. Smooth roll turning and the scraper adjusted up tight.
I think it should handle two rows.
We ran a 718 on a Minneapolis-Moline G1355 in 30 ton corn with a two row head. Both the old style and new style heads and it only bunched when there was a problem with the feed rolls. You didn't want to shut it down before the spout cleared and you didn't want to start up too fast but it worked fine otherwise. I thought the 770 was bigger than a 718.
Good luck! | |
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New Holland 770 silage chopper issue
