Flymo lawnmower Handle Pivot Pin. Flymo Part Number: 5139094-01. Mow n Vac 28cm - 9632571-01, 9632571-62. Lawnmower part to fit. Hover Vac 28cm - 9632573-01, 9632573-62. This can be due to the manufacturer changing suppliers during or after a production run of the appliance.