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- 1143 640 2002 – STIHL Chain Sprocket / Clutch Cover
Description
1143 640 2002 – STIHL Chain Sprocket / Clutch Cover (Genuine OEM Part)
The STIHL 1143 640 2002 is a genuine OEM chain sprocket / clutch cover designed to enclose and protect the clutch and chain sprocket assembly on compatible STIHL chainsaws. This component is essential for operator safety, proper chain alignment, and reliable chain brake operation.
Manufactured to STIHL’s original equipment specifications, this clutch cover is constructed from durable, high-strength material to withstand impact, vibration, and debris encountered during operation. Using a genuine STIHL chain sprocket cover ensures correct fit, smooth chain brake engagement, and long service life.
Product Details
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Manufacturer Part Number: 1143 640 2002
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Brand: STIHL
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Part Type: Chain Sprocket Cover / Clutch Cover
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System: Chain drive system / Chain brake assembly
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Function: Encloses and protects clutch and chain sprocket
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Material: High-strength molded composite or metal (OEM spec)
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OEM Status: Genuine STIHL OEM replacement
Function
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Protects clutch and sprocket components from debris
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Supports proper chain alignment and tensioning
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Houses chain brake components
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Enhances operator safety during operation
Compatible With STIHL Chainsaws
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MS 170
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MS 180
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MS 190
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MS 200
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MS 210
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MS 230
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MS 250
How It’s Used
This chain sprocket cover mounts over the clutch and sprocket assembly and integrates with the chain brake mechanism. It allows access for chain adjustment while providing protection and structural support.
Correct installation is essential for proper chain brake function and safe chainsaw operation.
Suggested Maintenance
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Inspect the cover for cracks, wear, or damage
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Ensure chain brake engages and releases smoothly
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Clean debris buildup during routine service
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Replace the cover if damaged to maintain safety and reliability
The STIHL 1143 640 2002 Chain Sprocket / Clutch Cover is used in OEM-specified chain drive and safety system applications where durability, protection, and dependable chain brake performance are essential.
