ISE Replacement Recoil Spring
For Models: Stihl MS261, MS261C, MS271, MS271C, MS291, MS291C, MS311, MS391, MS341, MS361, MS361C, MS362, MS362C, MS382, MS441, MS441C, MS461, MS661, MS661C. Also fits Stihl GS461 Concrete Cutter
Replaces Part Numbers: 1135 190 0600 , 1135-190-0600