Genuine OEM Husqvarna Parts Fits Husqvarna model 435, 435E Please Note: May not fit all specs of above models listed, please consult owner's manual for proper part number identification and proper installation Recoil starter assembly 504597002 spins the crankshaft to start the engine when you pull the rope The most common reason for replacing the recoil starter assembly is if any of the parts it contains the starter rope, the rewind spring, and the recoil starter pulley is worn out or broken, causing the engine to not start. Husqvarna Chainsaw Recoil Starter Assembly