Carburetor 20 853 33-S+ Air Filter 20 083 02-S+ oil Filter Kit replacement for Kohler SV470 SV471 SV480 SV530 SV540 SV590 SV591 SV600 SV601 SV610 SV620 SV530S SV540S15HP 17HP 18HP 19HP 20HP 21HP Engin

What It Is

This is a complete replacement carburetor kit (part 20 853 33-S) with matching air filter (20 083 02-S) and oil filter, designed for Kohler Courage single-cylinder engines in the SV470–SV620 series. It’s intended for residential lawn tractors, zero-turns, and walk-behind mowers using 15–21 HP Kohler engines.

Fitment & Compatibility

• Engine models: SV470, SV471, SV480, SV530, SV540, SV590, SV591, SV600, SV601, SV610, SV620, SV530S, SV540S (15–21 HP).
• Check your engine’s spec number (stamped on the valve cover or blower housing) to confirm carburetor mounting pattern and fuel line size.
• This is an aftermarket kit, not OEM Kohler. May require minor adjustment of the throttle linkage or idle needle.
• Measure the carburetor mounting bolt spacing (typically 2.5” center-to-center) and fuel inlet diameter (usually 5/16” or 1/4”).
• Not for Kohler Command, CH, or other series—Courage only.

Key Things to Know

• Installation difficulty: Moderate. You’ll need a socket set, screwdriver, and possibly a carburetor adjustment tool. Expect 45–90 minutes.
• Quality variance: Some users report gaskets that need trimming or a slightly loose float. Inspect the bowl seal before installing.
• Air filter fit: The included filter is paper—upgrade to a foam pre-filter if mowing in dusty conditions.
• Common gotcha: The old carburetor’s mounting studs may be seized. Use penetrating oil and a 10mm nut driver. Replace the fuel line if it’s hard or cracked.

Should You Buy It

This kit is a solid budget option if your Kohler Courage engine is surging, hard-starting, or leaking fuel, and you don’t want to rebuild the OEM carb. It’s not for pros needing OEM reliability—but for a 5–10 year old mower, it’s a practical fix that usually works with minor tweaks.