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- 4180 120 7105 STIHL Throttle Shaft with Lever – Genuine OEM Part
Description
4180 120 7105 STIHL Throttle Shaft with Lever – Genuine OEM Part
The STIHL Throttle Shaft with Lever (4180 120 7105) is a genuine OEM replacement carburetor component designed for use on select STIHL equipment equipped with C1Q-series carburetors.
This throttle shaft assembly controls the opening and closing of the throttle plate inside the carburetor, directly regulating engine speed and throttle response. Proper throttle shaft operation is essential for smooth acceleration and stable engine performance.
Manufactured to STIHL factory specifications, this component provides the correct shaft dimensions, lever geometry, and durability required for precise throttle control.
Replacing a worn, bent, or sticking throttle shaft helps restore proper throttle operation and prevents erratic engine behavior.
Manufactured to STIHL OEM standards, this throttle shaft with lever ensures correct fitment and long service life.
Product Details
OEM Part Number: 4180 120 7105
Brand: STIHL (Genuine OEM)
Part Type: Throttle Shaft with Lever
Application: Carburetor throttle control component
Compatible Carburetors: C1Q-S174, C1Q-S131
Condition: New Genuine OEM Part
Function
This OEM throttle shaft with lever is designed to:
Control throttle plate movement
Regulate engine speed and throttle response
Ensure smooth and consistent acceleration
Replace worn or sticking throttle components
Support stable engine operation
⚠️ A faulty throttle shaft may cause erratic RPM, poor throttle response, or engine stalling.
Verify Fitment (Recommended)
Before ordering, confirm:
OEM part number 4180 120 7105
Carburetor model C1Q-S174 or C1Q-S131
Application matches your STIHL parts diagram
⚠️ Always verify fitment by OEM part number and carburetor designation, as internal carburetor parts vary by model.
Compatibility
Fits select STIHL models equipped with C1Q-S174 or C1Q-S131 carburetors, including:
FC 90
FC 95
FC 100
FC 110
FS 110
FS 110 R
FS 110 RX
FS 100 RX
FS 90 R 4180
FS 90 4180
HL 90 K
HL 100
HL 100 K
HT 100
HT 101 (⇥ 508613634)
KM 90 R
KM 110 R
(Exact application varies by model, carburetor configuration, and serial number — verify using OEM parts diagram.)
Installation Notes
Remove carburetor from engine as required
Disassemble carburetor carefully
Replace throttle shaft with lever 4180 120 7105
Ensure correct orientation and free movement
Reassemble carburetor and adjust if necessary
⚠️ Carburetor disassembly should be performed by a qualified technician.
Maintenance Tips
Keep carburetor clean to prevent sticking
Inspect throttle components during service
Use only genuine STIHL OEM carburetor parts for proper fit and durability

