CV490 Carburetor for Kohler CV460 CV461 CV490 CV491 CV492 CV493 Engine for Toro 74601 74603 74701 Riding Mower Replaces 12-853-117-S 12-853-118-S 12-853-107-S

What It Is

This is a complete carburetor assembly for Kohler Command Pro CV460–CV493 engines, found on Toro ZTR and riding mowers like the 74601, 74603, and 74701. It replaces OEM Kohler part numbers 12-853-117-S, 12-853-118-S, and 12-853-107-S, delivering fuel mixture to the engine for starting and running.

Fitment & Compatibility

Before buying, verify your engine model (stamped on the valve cover or shroud): CV460, CV461, CV490, CV491, CV492, or CV493. This carb fits those Kohler engines only—not CV620 or larger. Confirm your mower’s model number (e.g., Toro 74601) on the frame tag. Measure the mounting bolt spacing (typically 2.75 inches center-to-center) and the inlet size (usually 5/16″ barb). Also check that your air filter housing and throttle cable routing match this carb’s side-feed design. If you have a different Kohler CV series (like CV740), this won’t work.

Key Things to Know

• Aftermarket quality: This is a non-OEM replacement. It often works fine, but some users report needing to clean out debris or adjust the float height before installation. Inspect the gaskets and O-rings for damage.
• Installation difficulty: Moderate. You’ll need to remove the air filter assembly, fuel line, and throttle/choke cables. Expect 30–60 minutes. No special tools beyond basic wrenches and screwdrivers.
• Common gotcha: The included gaskets may be thinner than OEM, causing air leaks. Use a thin layer of sealant on the insulator block gasket if you see a gap. Also, the fuel inlet barb may be slightly different angle—bend the fuel line gently to avoid kinking.
• Tuning: After installation, you may need to adjust the idle mixture screw (typically 1.5 turns out from lightly seated) and idle speed screw for smooth operation.

Should You Buy It

At $31.98 with a 4.9-star rating (12 reviews), this is a budget-friendly fix for a non-starting or rough-running Kohler CV460–CV493 engine on a Toro riding mower. It’s best for DIYers comfortable with basic engine work who want to avoid the $80–100 OEM price. If you prefer no-hassle fitment or have a commercial mower, stick with Kohler branded parts.