Carburetor fit for Kohler Courage SV470 SV471 SV480 SV530 SV540 SV591 SV600 SV620 SV610 2085395S 2085371S 15-22 HP Riding Lawn Mower

What It Is

This is an aftermarket carburetor assembly designed to replace the OEM unit on Kohler Courage SV-series single-cylinder engines (SV470–SV620), commonly found on 15–22 HP riding lawn mowers from brands like John Deere, Cub Cadet, Husqvarna, and Craftsman. It handles fuel metering and air/fuel mixing to keep your engine running smoothly.

Fitment & Compatibility

Check your engine model number – must be one of: SV470, SV471, SV480, SV530, SV540, SV591, SV600, SV610, or SV620. The carburetor is a direct replacement for OEM part numbers 2085395S and 2085371S (and their supersessions).
Measurements – Inlet fitting is standard 5/16" barb; mounting hole spacing is roughly 2.5" center-to-center. Verify your old carb’s gasket pattern and bowl shape match.
Brand fit – Works on most riders using these engines, but double-check your mower’s deck size isn’t blocking access; some tight chassis may require removing the air filter housing or fuel line first.
OEM vs aftermarket – This is a non-OEM part; while it bolts on, the jets and idle mixture screw may need adjustment to match your engine’s exact tune.

Key Things to Know

• Quality varies – Some units arrive with debris in the bowl; flush with carb cleaner before installing. The float level is often pre-set but worth checking if you have a rough idle.
• Installation difficulty – Moderate (3/10). You’ll need a socket set, screwdriver, and possibly a fuel line clamp. Expect 30–60 minutes for a first-timer.
• Common gotcha – The included gaskets may be too thin; reuse your OEM gasket if the new one leaks. Also, the bowl drain screw can be loose from the factory—tighten it gently.
• Tuning required – After installation, you’ll likely need to adjust the idle mixture screw (usually 1.5–2 turns out from lightly seated) and the idle speed screw to get a stable low RPM.

Should You Buy It

If your Kohler Courage engine is surging, hard to start, or leaking fuel, this is a cost-effective fix—especially if you’re comfortable with basic wrenching and carb tuning. It’s not for beginners who want a perfect plug-and-play swap, but at this price it’s a solid choice for DIYers who can spend 20 minutes dialing it in.