sounds up front left when it happens i will be checking timing belts soon just because its a new to me bike i know honda recomends checking at 100k but on age alone ill check them. why i have cover off i will check everything else in there too. ill probably change belts as piece of mind for me. doesnt look all too much fun i hear its very easy to git 1 tooth off.
here are the belts and materials they are made of. they don't readily age, they are not the 60k mileage belts used in '80s cars. They are actually Gates industrial belts used as timing belts by Honda
""Construction consists of these components:
1. Fiberglass Tensile Member — Provides high strength, excel-
lent flex life and high resistance to elongation.
2. Neoprene ® Backing — Strong Neoprene bonded to the tensile
member for protection against grime, oil and moisture. It also
protects from frictional wear if idlers are used on the back of the
belt.
3. Neoprene Teeth — Shear-resistant Neoprene compound is
molded integrally with the Neoprene backing. They are precisely
formed and accurately spaced to assure smooth meshing with
the sprocket grooves.
4. Nylon Facing — Tough nylon fabric with a low coefficient of
friction covers the wearing surfaces of the belt. It protects the
tooth surfaces and provides a durable wearing surface for long
service.""
https://www.gates.com/content/dam/gates/home/knowledge-center/resource-library/catalogs/powergripdrivedesignmanual_17195_2014.pdf