Douglas G Columbia , MD October 28, 2016 Fan switch knob split knob unusable Identified replacement through photos with 1-inch grid to find proper size. Removed burner knows and cover panel, removed old steel insert from switch shaft with pliers, reassembled cover panel and knobs including fan switch knob, steel insert of which slipped onto shaft. Read More... Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes Tools: Pliers