The 4140 120 0631 Carburetor – 4140/31 is a genuine STIHL OEM replacement carburetor engineered to deliver a precise air-fuel mixture for optimal engine performance. Designed for use in STIHL handheld equipment, this carburetor restores smooth starting, consistent idling, and reliable throttle response in demanding conditions.
Key Features
✅ Part Number: 4140 120 0631
✅ Model: 4140/31
✅ OEM Quality: Genuine STIHL carburetor
✅ Factory-Calibrated: Pre-set for easy, no-fuss installation
✅ Durable Construction: Resistant to fuel, heat, and vibration for long service life
Benefits
✔️ Fixes Starting & Idling Issues – Replaces worn or gummed-up carburetors
✔️ Restores Fuel Efficiency – Maintains proper air-fuel balance for clean combustion
✔️ Quick Installation – Bolt-on design with no modification needed
✔️ Reliable in All Conditions – Designed for consistent performance in field use
✔️ Ideal for Routine Maintenance – Great for seasonal servicing or engine rebuilds
What It’s Used For
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Replacing malfunctioning or clogged carburetors
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Resolving performance issues such as poor idling, hard starts, or rough acceleration
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Supporting preventative maintenance or full fuel system overhauls
