The 4140 120 0634 Carburetor – 4140/34 is a genuine STIHL OEM replacement carburetor designed to deliver precise air-fuel mixture control for efficient and reliable engine performance. Whether you're experiencing hard starting, poor idling, or inconsistent throttle response, this factory-calibrated unit restores your equipment to peak operating condition.
Key Features
✅ Part Number: 4140 120 0634
✅ Model: 4140/34
✅ OEM Quality: Genuine STIHL carburetor
✅ Pre-Calibrated: Set to factory specs for easy installation
✅ Fuel-Resistant Materials: Engineered to handle vibration, heat, and fuel exposure
Benefits
✔️ Restores Engine Function – Fixes issues like rough running, bogging, or poor acceleration
✔️ Improves Starting and Idling – Ensures reliable cold starts and smooth operation
✔️ Enhances Fuel Efficiency – Maintains optimal air-fuel ratio for clean combustion
✔️ Easy to Replace – Bolt-on OEM fit with no need for adjustments in most cases
✔️ STIHL-Trusted Performance – Built for durability and long service life in the field
What It’s Used For
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Replacing a worn, blocked, or malfunctioning carburetor
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Resolving common fuel delivery issues
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Supporting seasonal tune-ups and complete engine servicing
