In case anyone else runs into this, I'll explain what happened. There are two nuts that are supposed to be locked together below the throttle lever. To get to them, you have to remove the throttle lever and dash board and a metal bracket that holds the upper and lower cowls together (in order to get wrenches in there). The steering wheel can stay put, although at first inspection it appears it has to be removed. Clearly this had nothing to do with my 50 hour service - just coincidence, although I'm getting tired of loose and/or missing bolts (had the loader stick nearly fall off due to the mounting bracket not being secured properly). Talk about hard to get to bolts! My 9 year old had to help with his small hands to fix that one. Whoever assembled this tractor must have had defective torque wrenches. Have they never heard of loctite? My dealer was able to tell me what the problem was after I showed up in person, although they had only seen it happen on a 2305 which they say is much easier to repair for this problem. I opted to fix it myself after looking at the parts diagrams online. Warranty would have covered it and my dealer wanted me to bring it in, but I would have had to borrow a trailer and this was faster by far than getting it there and waiting for it for several days. I need to get a set of super flexible socket and box and open end wrenches (do such things exist?) if these kinds of hard to get to bolts are going to keep coming loose. What a pain. At least I now know where the extra light circuits are located.
