Hi All,
I have had the misfortune to end up with bits of broken Plasterboard in the top end of my 96 Blade motor.
It was apart for valve clearances and Camchain, and then the roof of the garage came down overnight, the bike was covered but crap wennt everywhere.

In order to clean it out, i am going to lay the bike on it left side and would use Brake Cleaner, top to bottom, to clean all the busty sandy mess out.
So my question is, will Brake cleaner harm the valve guide seals in anyway?

thanks for any help.
Chris