Chainsaw Decompression Valve for MS660 MS440 MS390 MS381 MS260
Chainsaw Decompression Valve for MS660 MS440 MS390 MS381 MS260
Keep your chainsaw starting smoothly and running efficiently with this direct-fit Decompression Valve (Pressure Reducing Valve) designed for popular Stihl MS-series chainsaws. Crafted from durable metal, this 100% brand-new replacement part is engineered to fit a wide range of models, making it an ideal solution for home DIY maintenance and professional servicing alike.
Compatible Models: MS660, MS440, MS390, MS381, MS260 and other compatible MS-series chainsaws. Please compare the appearance, shape, and size with your original part before ordering to ensure correct fitment.
Key Features
- 100% Brand New — fresh replacement, not refurbished
- Durable Metal Construction — built to withstand repeated use and high-cycle operation
- Universal Fit — compatible with multiple MS-series chainsaw models
- Easy Installation — drop-in replacement for straightforward DIY servicing
- Restores Easy Starting — reduces cylinder compression for effortless pull-starts
- Suitable for Home & Outdoor Use — ideal for garden, yard, and woodland maintenance tasks
Specifications
| Part Type | Decompression / Pressure Reducing Valve |
| Material | Metal |
| Compatibility | MS660, MS440, MS390, MS381, MS260 |
| Condition | Brand New |
| Country of Origin | Made in China |
Package Contents
- 1 × Chainsaw Decompression Valve
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Frequently Asked Questions
Q: Which chainsaw models is this decompression valve compatible with?
A: This decompression valve is designed to fit Stihl MS-series chainsaws including the MS660, MS440, MS390, MS381, and MS260. Before ordering, please compare the shape, size, and appearance with your original part to confirm compatibility with your specific model.
Q: What does a chainsaw decompression valve do?
A: A decompression valve temporarily reduces the compression pressure inside the cylinder, making it significantly easier to pull the starter cord and get the chainsaw running — especially on larger, high-displacement engines like the MS660 and MS440.
Q: Is this part easy to install at home?
A: Yes! This is a direct drop-in replacement part suitable for home DIY maintenance. No specialist tools are required. Simply remove the old valve and thread in the new one. If you are unsure, consult your chainsaw's service manual or a qualified technician.
Q: What material is this decompression valve made from?
A: The valve is constructed from durable metal, ensuring longevity and reliable performance even under the demanding conditions of chainsaw operation.