Genuine STIHL 63780071010 Lever and Spring Set, an essential OEM replacement part designed to maintain optimal performance in a wide range of STIHL chainsaws. This component ensures precise operation and durability, fitting models such as MS 170, MS 180, MS 210, MS 230, MS 250, MS 260, MS 270, MS 280, MS 290, MS 310, MS 340, MS 360, MS 380, MS 390, MS 440, MS 460, MS 640, MS 650, MS 660, MS 780, MS 880, and 017, 018, 021, 023, 025, 026, 027, 028, 029, 034, 036, 038, 039, 044, 046, 064, 066, 078, 088.