Yamaha presents 3 options — with a flush bag, muffs, or hose-port connector and claims all three strategies perform Similarly effectively. Bag and Muffs: Motor really should be vertical, run not more than 800-900 rpm in neutral for quarter-hour with the prop removed. Be careful to not cross-thread the relationship. https://www.linkedin.com/posts/anhometech_anhome-airpod-cleaner-kit-cleaning-tool-3-activity-7180579811667374080-EjnJ?utm_source=share&utm_medium=member_desktop