11227909920 Annular Buffer for Stihl 064 066 MS640 MS650 MS660

Product Overview

This annular buffer is a critical component for Stihl chainsaws, providing cushioning and reducing vibration in the clutch assembly. It is compatible with models 064, 066, MS640, MS650, and MS660, replacing OEM part 1122 790 9920. This buffer helps maintain smooth operation and extends the life of the clutch system.

Key Features & Performance

• Precision-molded rubber compound for consistent damping.
• Direct replacement for OEM part 1122 790 9920.
• Reduces vibration transfer from the clutch to the crankshaft.
• Resists oil and heat degradation.
• Ensures proper clutch engagement and disengagement.

Fitment & Compatibility

• Stihl 064
• Stihl 066
• Stihl MS640
• Stihl MS650
• Stihl MS660

Common Uses

• Replacing worn annular buffers during clutch service.
• Reducing operator fatigue from excessive vibration.
• Maintaining chainsaw performance in professional logging or tree care.

Technical Specifications

• Part Number(s): 1122 790 9920
• Product Type: Annular Buffer
• Material: Rubber

Frequently Asked Questions

Q: What is the function of the annular buffer in a chainsaw? A: The annular buffer absorbs vibration between the clutch and crankshaft, reducing wear and improving operator comfort.

Q: How do I know if my annular buffer needs replacement? A: Check for cracks, hardening, or excessive play in the clutch assembly; replace if damaged or worn.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.