C·T·S Carb Kit – Rebuild Kit for Stihl FS90/SP90 (Pack of 2)

Upgrade your Stihl FS90 4-cycle trimmer or SP90 string trimmer with this C·T·S Carburetor Rebuild Kit, designed for direct replacement of the original ZAMA C1Q-S131 and C1Q-S171 carburettors. This kit is engineered to restore peak performance, ensuring smoother operation and improved fuel efficiency for your tool. Whether you’re tackling tough overgrowth or maintaining regular lawn care, a well-maintained carburettor keeps your trimmer running reliably—reducing the risk of stalling or misfiring.

Each pack contains two high-quality rebuild kits, providing a cost-effective solution for regular maintenance or when replacing worn components. The C·T·S rebuild kit is built to match the precision of OEM parts, featuring a tight seal and optimised airflow for consistent throttle response. This is ideal for DIY enthusiasts or professionals who prioritise performance without the expense of a full carburettor replacement. Always verify compatibility by cross-referencing with the images provided, as slight variations in model variants may apply.

Built for durability, this kit is a trusted choice for owners of Stihl’s popular string trimmers, offering a straightforward way to extend the life of your equipment. The lightweight design (just 40g per kit) makes handling easy, while the inclusion of two units ensures you’re never left short for future servicing. Perfect for gardeners, landscapers, or anyone who relies on reliable power tools, this rebuild kit helps maintain optimal engine performance with minimal effort.