Features 1、OEM Number: The trimmer pull starter replacement OEM number is 41401904009, 4140 190 4009, 4140 124 2800, 0000 350 3502 for reference. 2、Ideal Application: The heavy duty trimmer pull starter is a perfect replacement for Sthil FC55 FS38 FS45 FS46 FS55 FS55C FS55RC HL45 KM55 4140 Series Trimmer. 3、Working Principle: When you pull the rope, the recoil rewind pull starter assembly spins the crankshaft to start the engine, stable performance and high efficiency. 4、Durable Construction: The trimmer recoil pull starter assembly is constructed from high quality ABS plastic, making sure maximum durability and long service time. 5、Good Replacement: Strictly designed to meet the original standard, you can directly replace your worn or damaged ones for time saving, no complicated tools or operations required. Specification Item Type: Trimmer Pull Starter Material: ABS Replacement OEM: 41401904009, 4140 190 4009, 4140 124 2800, 0000 350 3502 Fitment: Replacement for Sthil FC55 FS38 FS45 FS46 FS55 FS55C FS55RC HL45 KM55 4140 Series Trimmer. Package List 1 x Trimmer Pull Starter