Recoil Starter Assembly 503 15 18-01 / 503 60 88-03 for Husqvarna 50 51 55 51EPA 55EPA 55EU1 55 Rancher EPA Chainsaw Replacement manufacturer part number: 503 15 18-01 / 503 60 88-03 Fitment models: Husqvarna 50, 50 Rancher, 50 Special, 51, 51 EPA, 55, 55 EPA, 55 EU1, 55 Rancher EPA chainsaw