cleaning dirty heads??? (pics)

[00000dan]

i have two questions what is this stuff in my heads??? looks like sand and junk...<br /><br />and how do i clean it out????<br /><br />

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[Walker]

Re: cleaning dirty heads??? (pics)

Probably mostly a mix of calcium deposits and aluminum oxide. Just start digging it out with a small screwdriver. Be careful with the mating surfaces of the head and the cover.