Hi, are you telling us that the LO/HI/REV level is stuck in the HI positision OR does the lever go into the LO & REV positions but the transmission remains in HI? If lever is stuck in HI do as Janicholson suggested. The 684 has two transmissions, Speed 1-2-3-4 located behind clutch housing, Range transmission LO/HI/REV is located under the front of the seat. The shift mechanism goes into the side of the transmission by the hydraulic filter. DO NOT FORCE the shift mechanism or you could twist it or shear it off at the transmission and that would cause the problem where shift lever can be moved to LO or REV and tractor remains in HI.
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Today's Featured Article - Talk of the Town: The Saga of Grandpa's Tractor - by The following saga is from the Tractor Talk Discussion Forum. Someone. The saga starts with the following message: Hey guys I have a decision to make. I know what you all will probably suggest and it will probably agree with me way down inside, but here it is. I have a picture blown up and framed in my "tractor room" of a Farmall M. It was my Grandpa's tractor, of which whom I never got to meet. He froze to death getting this tractor out of the barn to pull a truck out of the ditch before I was born. Anyway my dad and aunt had to sell it at the auction,
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