12-853-178-S Carburetor Replacement for Kohler CV13 CV14 CV15 CV16 13-16Hp Engine Replacement for John Deere AM132199 GT225

What It Is

This is an aftermarket carburetor replacement for Kohler Courage CV13–CV16 engines (13–16 HP) and compatible with John Deere GT225 and similar tractors. It replaces OEM part AM132199 and is designed for mowers, garden tractors, and small utility machines using those engines.

Fitment & Compatibility

Before buying, check your engine’s exact model number (e.g., CV13, CV14, CV15, CV16) and serial number – not just mower brand. This carburetor fits Kohler CV series single-cylinder engines, but not CV17 or larger. For John Deere, it fits GT225 (and possibly GT235/245) with the CV15 or CV16 engine – verify your mower’s engine tag. It’s an aftermarket part, so gasket fit and mounting hole alignment may vary slightly from OEM. Measure your old carburetor’s mounting bolt spacing (typically 2.25” center-to-center) and compare to this unit. Also confirm your fuel line size (usually 1/4” or 5/16”) – adapter may be needed.

Key Things to Know

• Quality variance: At $22, this is a budget carb. Expect possible casting burrs, loose gaskets, or a sticky float. Many users report needing to clean it before install.
• Installation difficulty: Moderate – requires removing air filter, fuel line, and throttle linkage. Have a small screwdriver set and a carburetor gasket kit handy. Some models may need a new gasket (not always included).
• Common gotchas: The choke linkage may be reversed compared to OEM – check orientation before tightening. Fuel inlet fitting can be plastic and crack if overtightened. If engine surges after install, adjust idle mixture screw (typically 1.5 turns out).
• Warranty/returns: Few sellers offer returns on carburetors – inspect immediately. If it leaks or floods, it’s often cheaper to replace than repair.

Should You Buy It

Buy this if you have a Kohler CV13–CV16 engine (especially on a John Deere GT225) and want a low-cost fix for a non-starting or surging mower. It’s a gamble on quality, but for $22 it can save a trip to the shop. Avoid if you need a guaranteed OEM fit or have a CV17+ engine – those require a different carb.