Lawn-Boy Trimmers with engines under 31cc; McCulloch Mac 110-Mac 140, Mini-Mac 6, 25, 30 and 35, Power Mac 6, Pro Mac 55 and 510, Super Pro 40, 310-340 and Titan 7 chainsaws; Ryobi Engines under 31cc; Stihl FS36, FS40 and FS44
Fits ModelsLawn-Boy Trimmers with engines under 31cc; McCulloch Mac 110-Mac 140, Mini-Mac 6, 25, 30 and 35, Power Mac 6, Pro Mac 55 and 510, Super Pro 40, 310-340 and Titan 7 chainsaws; Ryobi Engines under 31cc; Stihl FS36, FS40 and FS44