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SW Ontario | If there is something NOT mechanically wrong, I'd guess pump settings.
I would turn up the aneroid, and probably the main fuel screw as well. Start with the aneroid though, it changes the tractor behavior huge without increasing max fuel delivery.
Forgot to add that I have a 8640 and with the right pump settings it can be a beast. I turned mine up and was really happy with it, turned it up to 475hp...oh wait, that is the cummins 855 BCIII...I guess that does not apply.
No, but seriously, give the aneroid a turn, you will be amazed.
If you like more info you can call me, let me know if you want my number.
Edited by kinzepower 11/23/2009 10:37
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John Deere 8650, nothing but a "big baby!!"
