I am not sure if its my laptops bad speaker or not, but it sounds to me like there is a dog type clutch slipping on it somewhere. It is really noticeable when it shuts down. It just doesn't sound right to me. I have never been around a 95 JD. We had a Case 800 and 600 when I was a kid. A neighbor had a 105 JD back then. I would find some books or a knowledgeable person to help you get it set up for your crops. You will need to know what cylinder speed and what fan speed you need to run. You will also need to adjust your reel height and speed for your crop but they are in field adjustments. We updated back in 96 to much newer machinery and dad sold the equipment off 2 years ago. Here's a video of our IH we got rid of. I wish it was still here some days but oh well.
You nailed it, my brother and I were talking that something doesn't sound right???. We goofed with it today and realized that one of the gears on the right hand side is slipping. It is the gear that runs (not sure what you call it) the conveyor after the separator and before the straw walkers. That conveyor is completely covered with pack rat nest which consist of sticks, small pieces of wood, small pieces of material, lots of insulation and lots of other junk. We took a electric fence post and moved a lot of the junk around pulling out what we could but it is still stuck. I will get out the big shop vac tomorrow and go at it. However, I believe our pack rat problem is fixed, inside the combine we found a very large rat that got tangled in the straw walkers. I'm glad we got rid of him, I believe the rat came with the combine.
Nice International by the way, I was wanting to buy a International 503, it was at an auction about 4 miles away, the old thing ran perfect with no issues and it sold for $750, the problem was I only had $600, I bid up to $700 but I had to stop. The guy I was bidding against has the local rock quarry and money isn't much of an issue for him 
I added a picture of the gear that is slipping