Hi Chuck and welcome to the forum. I would say it is prudent to change the belts also just because of their age. Sounds like you have a really nice bike there. I bought a 85 LTD new and kept it until a couple years ago when I sold it and got a 1500. About the only difference between it and your SEi is the color. They are a beautiful and reliable bike and you should get a lot of fun riding from it. I just loved the fuel injection. It would start and run instantly from cold or hot with no hesitation or warm up required. Wish they had put that system on the 1500s.
Here is a good tutorial on how to change the belts on a 1200:
http://www.goldwingfacts.com/1200timingbelts.htm
Here is a good tutorial on how to change the belts on a 1200:
http://www.goldwingfacts.com/1200timingbelts.htm
