Ferilter Carburetor for Kohler Courage SV470–SV620 Engines — 20 853 33‑S Direct-Fit Replacement, 15–22 HP

Ferilter 20 853 33-S carburetor is a direct-fit replacement designed to restore proper fuel delivery for Kohler Courage SV470–SV620 and many 15–22 HP engines used in lawn tractors and zero-turn mowers.

This carburetor is built to match the specifications of Kohler part numbers such as 20 853 33-S, 20-853-14-S and related variants so you can replace worn or damaged units without modifying your engine. It’s compatible with a wide range of Kohler Courage engines (SV470, SV480, SV530, SV540, SV590, SV600, SV600S, SV610, SV620) and fits equipment from Cub Cadet, Toro, John Deere, Troy-Bilt and other OEMs that use those engines. The unit ships with the components shown in the product photos — inspect fitment and part numbers before installation to ensure compatibility.

Which Kohler engines and model numbers will this carburetor fit?

This Ferilter carburetor is engineered for Kohler Courage engines from approximately 15 to 22 horsepower, covering the SV4xx–SV6xx families and some CV series models. Always cross-check the part number on your old carburetor to confirm a match.

• Compatible Kohler models: SV470, SV480, SV530, SV540, SV590, SV600, SV600S, SV610, SV620
• Also fits CV series: CV490, CV491, CV492, CV493
• Replaces common Kohler part numbers like 20 853 33-S and its close variants

Can I use this carburetor on my Cub Cadet, Toro, or John Deere mower?

Yes — if your mower is fitted with a compatible Kohler Courage engine, this replacement carburetor should install without modifications. It’s commonly used on mid-size to large lawn tractors and zero-turn mowers that list the compatible Kohler engines.

• Fits Cub Cadet, Toro, Husqvarna, Troy-Bilt, MTD and similar brands that use Kohler SV engines
• Used on models like John Deere L110, LT160, GT225 and similar with Kohler 17.5 HP engines
• Works for many 42"–50" deck zero-turn and lawn tractor applications

What comes in the package and how do I verify fit before buying?

The carburetor ships with the parts shown in the main product image to help ensure a straightforward swap. Because Kohler used several visually similar carburetors, compare your current unit’s part number and mounting details to our photos before ordering.

• Package includes the carburetor and small hardware as pictured
• Compare throttle and choke linkage, mounting holes, and fuel inlet position to your old carb
• Contact seller with part photos if you’re unsure about compatibility

How will replacing the carburetor affect mower performance?

A properly matched carburetor restores consistent fuel metering, which helps smoother idling and more reliable throttle response. This is a replacement part; final results depend on correct installation, clean fuel lines, and any additional worn components that may need service.

• Improves starting reliability when installed correctly
• Reduces rough idling caused by worn or leaking carburetors
• Works best with clean fuel, new gaskets, and correct linkage adjustments

Who is this for: This Ferilter 20 853 33-S carburetor is intended for homeowners, landscapers, and small-engine repair technicians who maintain Kohler Courage–equipped mowers and tractors. It’s a practical replacement for anyone comfortable checking part numbers, comparing mounting details, and performing basic carburetor swaps to restore dependable engine operation.