Keep your STIHL equipment performing at its best with the STIHL Trimmer Service Kit for FC 91, FC 96, FC 111, FS 111, and KM 91 models. Designed for convenient routine maintenance, this kit includes an air filter, fuel filter, and spark plug to help support reliable performance and efficient operation. Certain kits also include a spark arresting screen, providing essential replacement components inone convenient package to help keep your STIHL equipment ready for the job. | STIHL Trimmer Service Kit for FC91/FC96/FC11/FS111/KM91