I have an older John Deere 210C loader/backhoe.
I was using it with the loader to move the snow in my driveway and I started to notice that periodically when I was in reverse and going to forward it would not always kick in right away. Then it just wouldn't go into forward at all. I put the machine in neutral, turn it off, restart the engine (how long it was off doesn't matter), put it in forward and away I'd go. I don't use it a lot and over a few months of intermittent use it progressively got worse in a couple of ways. It would start doing it sometimes while I was moving (almost like it was slipping) and also it started doing it much more frequently to the point where every time I was in reverse and try to go forward it would have to restart the engine. Now when I put it in forward it just kind of rolls a little forward. I am not sure if reverse is starting to slip now or if it just my brain playing tricks on me but it always goes in reverse without a problem. It also doesn't really matter if it is hot or cold.
Any help would be great.