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Primary drive after switching to synthetic oil and adjusting the chain tension, I went on a 500 mile trip. The further into the ride I went,it started making a clunking noise but only noticable at idle.Doesn't seem to be getting any worse. Seems to come from area of the lower end. Could I have overtightened the chain and caused damage, and what typically would that damage be?

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Most likely what has happened is that the tensioner bolt has backed out a bit, and is causing the primary chain to bump the case. I've had a few bikes that this has happened with. It won't cause any real damage, just a few scrapes on the inner primary, but you do need to get it right. I recommend that you replace the factory tesioner with a Hayden M6 automatic tensioner. This way you will never have to adjust it again, and it will always be adjusted properly. Occasionally you will have to replace the springs, about every 7 to 10 years, otherwise it takes care of itself.

Posted on Aug 28, 2008

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