Description
4180 120 0611 STIHL Carburetor C1Q-S174A Genuine OEM Part
The STIHL Carburetor C1Q-S174A (4180 120 0611) is a genuine OEM replacement carburetor designed for use on select STIHL professional trimmers, brushcutters, and hedge trimmers.
This carburetor is responsible for delivering the correct fuel-air mixture to the engine to ensure smooth starting, stable idle, and reliable performance under load. Proper carburetor specification is essential for correct combustion and engine efficiency.
Manufactured to STIHL factory specifications, this carburetor provides the correct calibration, fuel metering, and durability required for demanding operating conditions.
Replacing a clogged, worn, or malfunctioning carburetor helps restore proper engine performance and prevents starting or running issues.
Manufactured to STIHL OEM standards, this carburetor ensures correct fitment and long service life.
Product Details
OEM Part Number: 4180 120 0611
Brand: STIHL (Genuine OEM)
Part Type: Carburetor
Carburetor Model: C1Q-S174A
Application: Engine fuel system (model-specific)
Condition: New Genuine OEM Part
Function
This OEM carburetor is designed to:
Meter and mix fuel and air accurately
Support smooth starting and stable idle
Maintain proper engine performance under load
Replace worn or malfunctioning original carburetors
Ensure consistent fuel delivery
A faulty carburetor may cause hard starting, poor throttle response, or engine stalling.
Verify Fitment (Recommended)
Before ordering, confirm:
OEM part number 4180 120 0611
Carburetor model C1Q-S174A
Application matches your STIHL parts diagram
Serial number range (if applicable)
Always verify fitment by OEM part number and carburetor designation, as similar models may vary by production run.
Compatibility
Fits select STIHL models and configurations, including:
FC 90 (Muffler, Air filter)
FC 95 (Muffler, Air filter)
FC 100 (Muffler, Air filter)
FC 110 (Muffler, Air filter)
FS 110
(Carburetor C1Q-S174, C1Q-S131)
FS 110 R
(Carburetor C1Q-S174, C1Q-S131)
FS 110 RX
(Carburetor C1Q-S174, C1Q-S131)
FS 100 RX
(Carburetor C1Q-S174, C1Q-S131)
FS 90 R 4180
(Carburetor C1Q-S174, C1Q-S131)
FS 90 4180
(Carburetor C1Q-S174, C1Q-S131)
HL 100
(Carburetor C1Q-S174, C1Q-S131)
HL 100 K
(Carburetor C1Q-S174, C1Q-S131)
HL 90 K (Muffler, Air filter)
HT 100
(Carburetor C1Q-S174, C1Q-S131)
HT 101
(Carburetor C1Q-S174, C1Q-S131 508613634)
KM 90 R
(Carburetor C1Q-S174, C1Q-S131)
KM 110 R
(Carburetor C1Q-S174, C1Q-S131)
(Exact application varies by model, configuration, and serial number verify using OEM parts diagram.)
Installation Notes
Turn off engine and allow it to cool
Remove air filter housing and fuel lines carefully
Install STIHL OEM carburetor 4180 120 0611
Reconnect fuel lines and throttle linkage correctly
Adjust carburetor settings according to STIHL specifications
Carburetor installation and adjustment should be performed by a qualified technician.
Maintenance Tips
Use clean, fresh fuel to prevent carburetor issues
Inspect fuel lines and filters during replacement
Adjust carburetor only according to STIHL guidelines
Use only genuine STIHL OEM carburetors for correct fit and performance
