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- 1141 640 2001 – STIHL Chain Sprocket 0.325" 7-Tooth (Genuine OEM Part)
Description
1141 640 2001 – STIHL Chain Sprocket 0.325" 7-Tooth (Genuine OEM Part)
The STIHL 1141 640 2001 is a genuine OEM 0.325" pitch, 7-tooth chain sprocket designed to transfer engine power from the clutch to the saw chain on compatible STIHL chainsaws. This sprocket plays a critical role in maintaining proper chain speed, smooth power delivery, and efficient cutting performance.
Manufactured to STIHL’s original equipment specifications, this chain sprocket is made from hardened, wear-resistant steel to withstand high RPM, heat, and continuous operation. Using a genuine STIHL chain sprocket ensures correct chain engagement, proper alignment, and long service life.
Product Details
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Manufacturer Part Number: 1141 640 2001
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Brand: STIHL
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Part Type: Chain Sprocket
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Pitch: 0.325"
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Teeth: 7-Tooth
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System: Drive system / Oil pump & clutch interface
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Function: Transfers power from clutch to chain
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Material: Hardened steel
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OEM Status: Genuine STIHL OEM replacement
Function
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Transfers engine power to the saw chain
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Maintains correct chain speed and smooth operation
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Ensures proper chain engagement and alignment
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Supports efficient and consistent cutting performance
Compatible With STIHL Chainsaws
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MS 271 FarmBoss (Oil pump, Clutch)
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MS 271 (Oil pump, Clutch)
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MS 261 (Oil pump, Clutch)
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MS 291 (Oil pump, Clutch)
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MS 261 C-M (Oil pump, Clutch)
How It’s Used
This chain sprocket installs on the clutch drum and engages the saw chain, transmitting power as the clutch engages at operating RPM. Proper sprocket condition is essential for smooth chain operation and reduced wear on the chain and guide bar.
Correct installation and inspection during routine service are recommended.
Suggested Maintenance
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Inspect the sprocket regularly for wear or hooking
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Replace the sprocket when installing a new chain if worn
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Ensure proper lubrication from the oiling system
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Check alignment during clutch or oil pump service
The STIHL 1141 640 2001 Chain Sprocket (0.325" 7-Tooth) is used in OEM-specified drive system applications where reliable power transfer, durability, and cutting efficiency are essential.
