This is a wonderful opportunity to inspect, clean and perform loads of preventative maintenance. There are several threads here related to belt replacement, including a video of the change with the engine out of the bike. It's easy enough to perform with the engine in place, but the clarity of the video covers all the details. Use a Honda manual as a go-by.
I bought a garage queen 1991 with just 17000 miles on it...hadn't been ridden regularly for 20 years, so I took it all apart and did the job. The old 24 year old belt was in perfect condition so, in spite of its age, it could have gone to 90000+ miles with no problem. Unless there is a pulley or guide failure, early belt replacement simply is not necessary. I cleaned everything I could reach with a long handled parts cleaning brush, cleaned all the electrical connectors, replaced suspect tubes/hoses/thermostat/radiator cap, checked valve adjustment, lubed everything that required lube under the plastic....While it was apart, I removed the rear wheel and drive shaft, cleaned and lubed per the manual and did the drive splines with Honda moly paste. Parts are still available from Honda, Partzilla, Bike Bandit, Ron Ayers, Ebay...etc. I got a Gates #325 belt from Amazon for just $39.95. I've seen them for up to $110 on Ebay and Amazon. Shop wisely.
The PO had the carbs rebuilt, brakes rebuilt, fluids changed and new battery installed just before he put it up for sale. That certainly eased my workload. I did the fluids again with the belt maintenance. On the plus side, I found loose water hose clamps, partially plugged water hoses, completely plugged overflow hose, one loose spark plug, a decayed little air filter (in front of the main air filter) and an oil filter that was seeping due to being barely finger tight (made the whole effort worthwhile). Look carefully and be thorough...no telling what you may catch. Many faired bike owners simply don't look under the plastic work.
After all that work, some of which turned out to be unnecessary, I have a bike that I ride regularly and anywhere with no qualms. Sometimes there's no substitute for peace of mind.
Mine had most of the original markings, too. That's why I suspected it was the original belt, since it said " Made in Japan" on it.
