I ordered the appropriate parts package. Very reasonably priced. The instructions were included and were step-by-step. Needed my reading glasses......but the replacement was fairly easy and the new parts are much better than the original!!!! Most difficult part was removal of the old parts. Just break them off with sturdy pliers and a screwdriver to pry off. Protect your eyes when doing this, as the plastic flies around. Then follow instructions for remarkably easy replacement. Better than new!!