Stains on clutch cover

[Reno]

These stains are from improper washing. The shampoo from many car wash' is harsh for the materials, as it is (most of the time) a generic cleaner. this guys bike, they washed it with a veru harsh cleaner when the engine was hot. is there any possibility to polish it with a mini polisher or what else can we do here?i think this material is anodized aluminum or maybe magnesium. we are talking about a cbr600 here

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[Sizzle Chest]

Try a light polish/finishing polish and see if that makes any difference. Do an inconspicuous spot first as your test spot.