This genuine Stihl decompression valve is a small, metal-bodied component that makes starting your petrol chainsaw easier and more consistent. Fitted to the cylinder head, it momentarily lowers compression during pull-starting, reducing the force needed on the starter cord and helping to protect the recoil mechanism. The valve features a durable metallic body with a positive-sealing O‐ring and a robust black push button designed for repeated use in tough conditions. Purpose-built for Stihl chainsaws, it offers a precise fit and dependable operation on models such as the MS 261 and MS 261 C. Supplied to OEM specification (1141 020 9430), it is a straightforward, like-for-like replacement for a worn, leaking, or sticking valve.

Key Features:
– Genuine Stihl part for assured compatibility and correct sealing
– OEM specification (1141 020 9430) for precise fit and function
– Reduces cylinder compression during start-up to lower pull force on the starter cord
– Metal construction with O‐ring seal for durability under heat, vibration, and fuel exposure
– Simple screw-in design for quick, hassle-free replacement with basic tools
– Helps protect recoil starter components by reducing starting strain
– Reliable operation for frequent stop/start use in professional and domestic settings
– Suitable for regular maintenance to restore easy starting when the original valve degrades

Typical Applications:
Ideal for restoring easy, reliable starting on Stihl chainsaws used in forestry, landscaping, tree surgery, estate management, and general property maintenance. Useful in cold weather, after engine overhauls, or when the starter cord feels unusually hard to pull due to high compression or a failing valve.

Also known as:
Decompressor valve, pressure relief valve, decompression release, starting aid valve, cylinder pressure release valve, bleed-off valve, chainsaw decompressor.

Fits Models:
MS 261, MS 261 C, MS261, MS261C

Alternate Part Numbers:
1141-020-9430, 11410209430

Product Specifications