Quote:

After adjusting everything I really couldn't tell any difference. So I don't think you have to worry about damaging anything, but I would do the adjustment at the earliest opportunity.



Agreed - If your engine was running fine before the valve adjustment, you really won't notice any difference in performance.

There is a damage concern though!

Valves that are too loose will create more tappet noise. This usually isn't harmfull unless you have way too much clearance usually caused by a worn cam bearing, lobe, tappet, shim, etc.

Too tight on the clearance will generally give less noise but can be way more damaging. As the valves wear into the valve seats, they move up in the head taking up the clearance in the valve train. If the valves move up so much that they can't close properly, the valve won't be able to transfer heat to the head and burn. Expensive.

12 Rocket Roadster
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73 Yamaha TX 750