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have to replace feeder chain on jd 9600.is there any difference between Harvest and Gibson feeder chains?anybody had any problems with them jumping a cog,heard some complaints on that?
 

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Never had a Gibson but I have used a Harvest In 3 combines now one being a 9600. They have been very good for us . They run much quieter seem to require less adjusting feed very good and I have never had an issue with them jumping.
 

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We had an OEM chain that kept jumping until it finally broke. When I got everything apart I found out the previous owner had installed it with one sprocket on the shaft backwards, which puts it out of time a half a tooth with the rest of the sprockets. Just eyeballing them with the header on won't cut it. If a chain is jumping get a straight edge on there to make sure the sprockets are lining up.
 

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We had an OEM chain that kept jumping until it finally broke. When I got everything apart I found out the previous owner had installed it with one sprocket on the shaft backwards, which puts it out of time a half a tooth with the rest of the sprockets. Just eyeballing them with the header on won't cut it. If a chain is jumping get a straight edge on there to make sure the sprockets are lining up.
The sprockets can be reversed for wear, so I am not sure about what
you have posted.
 
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