I have a 2004 Burgman AN 400 with only 4000 Kms. It has a simple (compared to my VFR) linked brake system in which the front disc is partially enabled by either the front or rear brake levers.
When using the rear brake lever part of the front and all of rear is enabled and there is no noise or other problems at all.
When using the front brake lever part of the front and none of the rear is enabled but there has started to be a noticeable grinding sound. This sound is not as bad (I think) as you might get if the pads are wearing low, or the disc is ruined, and it did not do that until recently.
AFAICT there is no excessive disc wear, puck wear, disc glaze, pulsing at the lever under operation, or any other signs of problems. In fact as mentioned, it is noticeable only when the front brake lever is enabled in spite of the fact the rear brake lever enables part of the front system too.
I donít really want to take the whole front brake apart if I donít have to but, I cannot confirm with certainty that no damage is being done. I have not yet cleaned the front brake assembly (with brake cleaner) but I guess that's the first thing I should try.
Given the low Kms, the very good condition of the bike, and that the brakes have been used in typical non-demanding conditions, what might I do if brake cleaning fails to improve the noise?
Very much thanks!