Ferilter 20 853 33-S Carburetor for Kohler Courage 19 20

Ferilter's 20 853 33-S carburetor is a direct-fit replacement designed to restore reliable fuel delivery to Kohler Courage SV-series engines (SV470–SV620) used in mowers from Cub Cadet, Toro, John Deere and more.

If your lawn tractor or zero-turn mower with a Kohler Courage engine is running rough, stalling, or refusing to idle, replacing the carburetor is often the simplest way to recover consistent performance. This Ferilter unit matches multiple Kohler part numbers and supports a broad range of horsepower ratings (15–22 HP), covering many model years and OEM platforms. The description below explains fit, features, installation considerations and who should choose this part.

Which engines and mower brands will this carburetor work with?

This Ferilter carburetor is built to replace Kohler part numbers including 20 853 33-S and several related variants, fitting Kohler Courage SV-series engines and select CV-series models. It also fits many common mower makes that use those engines.

• Kohler models: SV470, SV480, SV530, SV540, SV590, SV600, SV600S, SV610, SV620 and CV490–CV493.
• Compatible HP range: typically 15 HP through 22 HP (check engine stamping).
• Common mower brands: Cub Cadet, Toro, Husqvarna, Troy-Bilt, MTD, John Deere and others using Kohler Courage engines.

How do I confirm this is the correct replacement for my mower?

Verify compatibility by comparing the part number and physical appearance of your old carburetor to the product photos and listed Kohler part numbers. Measure flange spacing and throttle/choke linkage positions before purchase.

• Match Kohler part numbers such as 20-853-14-S, 20-853-16-S, 20-853-01-S, etc.
• Compare engine model stamp (SV470–SV620 or CV490–CV493) on your engine cover.
• Use the included photos and note mounting holes, fuel inlet, and control link geometry.

What comes in the package and what tools or steps are typical for installation?

The carburetor ships with the hardware shown in the primary product image so you have what’s needed for a standard swap. Basic mechanical skills and common hand tools are usually enough to complete the replacement.

• Package includes the carburetor plus gaskets and mounting hardware as pictured.
• Typical tools: screwdrivers, socket set, pliers, and fuel-line clamps.
• Suggested steps: disconnect battery/fuel supply, remove air box, swap carburetors, reattach linkages and hoses, then test-run and adjust idle mixture if needed.

Will this carburetor improve engine performance or fuel efficiency?

Replacing a worn or leaking carburetor with a correctly matched unit restores intended fuel metering and engine response. While it replaces a failing part to return normal operation, gains depend on the engine’s overall condition and proper tuning.

• Restores proper idle, throttle response, and starting behavior compared to a clogged or damaged carburetor.
• May reduce fuel leaks and rough running if the old carburetor had varnish, damaged gaskets, or warped components.
• Final performance depends on spark, compression, air filter condition, and correct linkage adjustment.

Who is this for? This Ferilter 20 853 33-S carburetor is intended for homeowners, landscapers, and small-engine technicians who need a reliable, direct-replacement carburetor for Kohler Courage SV- and related CV-series engines. Choose this part if your mower shows signs of fuel delivery problems and you confirmed fit by part number or visual comparison. If you’re unsure, compare your old carburetor to the photos or contact us with your engine model and part number for assistance.