L110 CV15S Carburetor for John Deere L110 Kohler CV15S CV16S SV600 20 853 33-S SV540 SV530 SV590 Husqvarna YTH21K46 YTH20K46 LTH130 YTA1842 YTH20F42T Lawn Tractor

What It Is

This is an aftermarket carburetor designed to replace the OEM Kohler 20 853 33-S on single-cylinder engines like the CV15S, CV16S, SV600, and SV540/SV530/SV590. It fits John Deere L110, Husqvarna YTH21K46, YTH20K46, LTH130, YTA1842, YTH20F42T, and similar lawn tractors, serving as a direct fuel-delivery replacement for mowers with worn or clogged original carbs.

Fitment & Compatibility

• Engine check: Must have a Kohler Courage or Command Pro single-cylinder engine with model numbers CV15S, CV16S, SV600, SV540, SV530, or SV590. Verify your engine model number on the valve cover or blower housing—deck size alone isn’t enough.
• OEM reference: This replaces Kohler part 20 853 33-S and is aftermarket, not OEM. It may differ slightly in casting or jetting.
• Physical fit: Measure the carburetor mounting flange bolt spacing (typically 2.125 inches center-to-center) and intake throat diameter (usually 1 inch) to confirm compatibility. Check that your fuel line and throttle/choke cable connections match—some older mowers use different fitting sizes.
• Machine fit: Works with John Deere L110, Husqvarna YTH21K46, YTH20K46, LTH130, YTA1842, YTH20F42T, and others with the listed Kohler engines. Confirm your model’s engine code before buying.

Key Things to Know

• Quality variance: At this price point, casting and gasket quality can be inconsistent. Inspect for burrs or debris inside the carburetor before installation. Some users report needing to clean out machining chips.
• Installation difficulty: Moderate—requires removing the air filter housing, fuel line, and throttle linkage. Have a small screwdriver set and a torque wrench (mounting bolts need 8–10 ft-lbs). Expect 30–60 minutes.
• Common gotchas: The supplied gaskets may be too thin or thick—use the old gasket as a reference. Also, the fuel inlet fitting may be slightly different; reuse your original if the new one doesn’t seal. If the engine runs rich or lean, the idle mixture screw may need adjustment (turn 1.5 turns out from lightly seated as a starting point).
• No warranty support: As an aftermarket part, returns or replacements are handled by the seller, not Kohler. Keep your OEM carb as a backup.

Should You Buy It

This is a budget-friendly option for DIYers who need a quick, functional replacement for a worn or non-rebuildable OEM carburetor. It’s best if you’re comfortable with basic engine work and can tolerate minor fitment adjustments. If you want exact OEM reliability or have a complex fuel system (e.g., with a fuel pump or electronic governor), spend more on a Kohler-branded unit.