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Frequently Asked Questions
Yes, this kit is designed to fit Stihl MS391, MS311, MS291, and MS271 chainsaws perfectly.
The kit includes one clutch sprocket cover and a bar nut for secure installation.
Yes, the kit is designed for easy installation with minimal effort.
Yes, it replaces Stihl part number 1140 640 1700 and meets or exceeds OEM specifications.
Made from high-quality materials, it is built to withstand tough conditions and protect your chainsawâs internal components.
Recommended Uses
- Replacing worn or damaged clutch sprocket covers on Stihl MS391, MS311, MS291, and MS271 chainsaws to restore proper function.
- Performing routine maintenance to ensure the chainsawâs sprocket cover remains durable and protective.
- Upgrading old or faulty sprocket covers for improved chainsaw reliability during heavy-duty cutting tasks.
- Repairing chainsaws used in forestry, landscaping, or outdoor construction to maintain optimal performance.
- Ensuring secure attachment of the chainsaw bar through the included bar nut for safe and efficient operation.
- Using as a reliable OEM replacement part to keep Stihl chainsaws running smoothly in professional or personal use.










