The RIO is purely electrical. (well, there IS a mechanical switch....) I am still thinkin' this is something loose in the linkage. Best bet would be crawl under the tractor, and have someone else manipulate the pedal, (engine NOT running) see what moves that shouldn't, and what doesn't move, that should.
I will probably go to his house after basketball games to see if we can diagnose issue. Owners manual you linked above does not have enough detail. Need tech manual which I do not think Deere makes available.
There is considerable difference between X5XX and X7XX pedal linkage so the information I had from my X485/X720 didn't help diagnose problem. Tractor is operational using the FWD pedal for both FWD and REV. Press the pedal for FWD and manual pull the pedal up for REV.
Something happened to the tractor Friday while he was clearing snow. Tractor was working as expected when he began clearing. I don't know if change was gradual or suddenly changed. There is no Theory of Operation for pedal function even for the 700 series but there is a section of about 15 pages that cover the adjustments of the pedals. There is a lot going on with these pedals besides forward and reverse operation. Free wheeling, reverse implement option (RIO), and cruise control need to be satisfied with pedal adjustment. Without correct manual and a stand to place the tractor on we could not see where the problem was but expect it to be an "adjustment that slipped". I expect the tractor will need to be taken to Deere dealer for service if I cannot get a tech manual to study for repair.
Yes Frogmore. I saw the slots in pedal levers and figured that was for adjustment. Tech manual for X720 adjustment gave a dimension between underside of pedal and fender deck in neutral position. I do not have that dimension for X534 tractor. Do you know that dimension for the two pedals?
I have both pedals raised as high as possible on my X534 and on my X749. I think the rear might be too high on the X749 and it might be limiting my forward speed. I have thought this way for over a year, so obviously not enough to actually do something about it.
It isn't really an exact science/setting, but with the reverse pedal only an inch above the floorboards, flooring it really isn't going to do too much.
Stopped at son's house after attending wake/funeral this evening. Snow predicted to start again tomorrow/Wednesday so wanted to get him the info on adjusting the pedals before he needed to used it again. He will work on it tomorrow afternoon. Told him to give me a call if he needed help.