Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Hello, thanks for requesting me.
I am not sure how you are breaking brushes, you really didn't say.
But there is no trick t changing them. Thebrush block has 2 screws holding it in place. Simply remove both screws, pull the brush block straight out, slide the new bruh block in, and install the screws.
Was this what you wanted to know?