The MTD 753-10204 Trimmer Starter Housing Red protects and supports the starter components of a compatible string trimmer. This replacement housing encloses the starter mechanism and helps keep its internal parts properly positioned during operation. It works with the recoil starter system, allowing the starter assembly to function when starting the engine. A properly fitted housing h... https://www.wholetoolbox.com/mtd-753-10204-trimmer-starter-housing-red/753-10204.html