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Description
4180 120 0620 Carburetor | Genuine STIHL OEM Replacement
The 4180 120 0620 Carburetor is a genuine STIHL OEM replacement carburetor designed to deliver the correct air-fuel mixture to the engine for reliable starting, smooth operation, and consistent power. This carburetor is used on select STIHL brushcutters, pole pruners, KombiSystem equipment, augers, and other outdoor power equipment.
It is part of the STIHL 4180/20 carburetor configuration and is listed for several FS, HT, KM, FB, and BT models.
Features That Make a Difference
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Genuine STIHL OEM replacement carburetor
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Part Number: 4180 120 0620
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Alternate Part Number: 41801200620
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Product Type: Carburetor
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Carburetor Configuration: 4180/20
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Precisely meters fuel and air for proper engine combustion.
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Supports reliable starting and consistent engine performance.
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Designed to maintain the correct air-fuel mixture.
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OEM construction provides proper fit and compatibility.
Benefits
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Replaces a worn, damaged, or malfunctioning carburetor.
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Helps restore proper fuel delivery and engine performance.
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Supports smoother acceleration and engine response.
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Can help resolve starting, idling, or fuel-mixture problems caused by a faulty carburetor.
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Genuine STIHL design helps ensure proper fit.
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Ideal for engine repair and maintenance.
Specifications
| Specification | Details |
|---|---|
| Part Number | 4180 120 0620 |
| Alternate Part Number | 41801200620 |
| Product Type | Carburetor |
| Brand | STIHL |
| Carburetor Configuration | 4180/20 |
| System | Fuel / Air Intake |
| Applications | FS / HT / KM / FB / BT |
| Function | Air-Fuel Metering |
| Use | Engine Repair / Replacement |
| Part Type | Genuine OEM Replacement |
Compatibility
The 4180 120 0620 Carburetor is listed for:
FS Series
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FS 131 — Carburetor 4180/20
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FS 131 R — Carburetor 4180/20
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FS 131.0 — Muffler / Air Filter
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FS 131.0 R — Muffler / Air Filter
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FS 311 — Carburetor 4180/20
HT Series Pole Pruners
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HT 134 — Carburetor 4180/20
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HT 135 — Carburetor 4180/20
KM KombiSystem
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KM 131 R — Carburetor 4180/20
Other Equipment
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FB 131 — Carburetor 4180/20
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BT 131 — Carburetor 4180/20
Always verify your exact STIHL model, serial number, carburetor configuration, and original part number before ordering.
How the Carburetor Works
The carburetor combines fuel with incoming air in the proper proportion before the mixture enters the engine for combustion.
During operation:
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Air enters the carburetor.
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Fuel is drawn from the fuel system.
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The carburetor meters the fuel into the incoming airflow.
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The resulting air-fuel mixture enters the engine.
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The engine burns the mixture to produce power.
A properly functioning carburetor is essential for reliable starting, stable idling, acceleration, and full engine performance.
Signs of a Faulty Carburetor
A carburetor may require cleaning, rebuilding, adjustment, or replacement if you experience:
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Hard starting.
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Engine starts but quickly stalls.
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Rough or unstable idle.
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Poor acceleration.
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Loss of engine power.
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Engine running excessively rich or lean.
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Fuel leakage around the carburetor.
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Inconsistent engine speed.
Before replacing the carburetor, fuel filters, fuel lines, air filters, and other fuel-system components should also be inspected because they can produce similar symptoms.
Why Replace the Carburetor?
A heavily worn, damaged, or contaminated carburetor may no longer meter fuel correctly. When cleaning or rebuilding is no longer practical, replacing it with the correct OEM carburetor can restore the intended fuel-delivery system.
The 4180 120 0620 is specifically associated with the 4180/20 carburetor configuration, making accurate model and parts-diagram verification important before purchase.
Why Buy from Barry’s Power Equipment?
Barry’s Power Equipment provides quality OEM and replacement parts for lawn, garden, and outdoor power equipment.
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Genuine OEM replacement parts
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Quality products for residential and commercial equipment
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Competitive Pricing
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Fast Shipping
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Expert Customer Support
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Reliable parts for professional equipment repair and maintenance
Restore reliable fuel and air delivery with the STIHL 4180 120 0620 Carburetor, a genuine OEM replacement for compatible FS 131, FS 131 R, FS 311, HT 134, HT 135, KM 131 R, FB 131, and BT 131 models.
