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John, If you are backing that screw out all the way, as you say you are, and it is still not opening up, it sounds as though you could have some problems with the rack on the pump sticking. I doubt that though, but it is possible. The other item to check would be where the throttle adjust on the side right behind the flywheel. There is a speed control rod there, and fast idle, and stop adjusting screws. Make sure you are getting good travel there. Just back the fast idle screw all the way out, and with the tractor off see if the racks will open up more, when you have the throtle pushed all the way forward. What is your fast idle RPM? When the tractor is off, the governor should allow the racks to open up fully, or as much as is allowed with the set screw. The R-830 adjust differently than the 70-730, there is no eccentric on the governor. Same theories for both, just done a little differently. If you have any other questions, just drop me a line, I"d be happy to talk it over with you. [email protected] Thanks Garry
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