FS250 Carburetor - Fits FS250R FS120 FS120R FS200 - Replaces 4134-120-0603

FS250 Replacement Carburetor

Key Features

• Precision-engineered to deliver an optimal air-fuel mixture for efficient engine performance and reliable operation.
• Constructed from high-quality, corrosion-resistant metals to withstand continuous outdoor use and harsh fuel environments.
• Direct-fit design ensures consistent starting, smooth acceleration, and stable idling.
• Designed to fully restore original equipment power and fuel efficiency.

Replaces / Cross-Reference Part Numbers

• 4134-120-0651
• 4134-120-0603
• 4134-120-0653
• C1Q-S51C
• C1Q-S36G
• C1Q-S35B
• C1Q-S138
• C1Q-S139
• C1Q-S82
• C1Q-S83

Compatibility & Fitment

• Compatible with select string trimmers, weed eaters, clearing saws, and earth augers.
• Fits FS series models: FS120, FS120R, FS200, FS200R, FS202, FS250, FS250R, FS300, FS350.
• Fits BT and SP series models: BT120, BT120C, BT121, SP200.
• Fits FR and TS series models: FR350, FR450, FR480, TS200.

When to Replace

• The engine is difficult to start, stalls frequently, or dies immediately after turning over.
• The equipment experiences rough idling, bogs down under load, or lacks power during acceleration.
• Fuel is leaking directly from the carburetor body or the surrounding gasket area.
• The engine will only stay running when the choke is partially or fully engaged.

Installation Tips

• Completely drain the fuel tank and clear the fuel lines before removing the old carburetor.
• Inspect and replace the mounting gasket and fuel filter during installation to ensure a proper vacuum seal and clean fuel flow.
• Photograph or take note of the original fuel line routing and throttle linkage positions prior to disassembly.
• Minor adjustments to the high and low mixture screws may be required to fine-tune engine performance after installation.