FS90R Carburetor Upgrade For Trimmers Fits FS90R FS110R FS90 FS100RX FS110 90R 110R ZAMA C1Q S174 4180 120 0611 Compatible Easy Install High Performance Fuel Meter And Durable Build

FS90R Carburetor Upgrade Kit for STIHL Trimmers
✔️ All-in-one kit includes carburetor, air filter, fuel line, plug, gasket set

This all-in-one kit is designed to upgrade the carburetor system on FS90R and related trimmer models. It helps improve fuel metering, starting reliability, and overall engine performance in lawn care and professional trimming tasks.

✅ Replaces C1Q-S174 4180-120-0611 on FS90R family
✅ All-in-one kit includes carburetor, air filter, fuel line, fuel filter, spark plug, primer bulb, and gasket set
✅ Brass components, rubber diaphragms, and anodized aluminum body resist heat, corrosion, and wear
✅ Factory tuned for immediate run with no user adjustment

Parameter	Value
Mounting Hole Distance (Center to Center)	31 mm (1.22 in)
Throttle Bore Diameter	14 mm (0.55 in)
Choke Bore Diameter	18 mm (0.71 in)
Venturi Diameter	10.5 mm (0.41 in)
Fuel Inlet Line Diameter	4.2 mm (0.165 in)
Fuel Return Line Diameter	4.0 mm (0.157 in)

💡 What is a carburetor upgrade kit used for in small engines?

This handy kit gives you a complete setup for reliable operation and easier maintenance.

- Improves starting and throttle response in trimming tasks - Handy all-in-one kit saves time and avoids hunting for separate parts - Includes carb, air filter, fuel line, fuel filter, spark plug, primer bulb, and gaskets