Carburetor Rebuild Kit Compatible with Kohler Engines 7000 Series 22HP 23HP 24HP 25HP 26HP, for KT730 KT735 KT740 KT745 Series, Carb Replace# 16 853 21-S, 3285361S, 32 853 47-S, 12 853 21S

What It Is

This is a carburetor rebuild kit designed to restore fuel delivery on Kohler 7000 Series engines (22HP–26HP), specifically the KT730, KT735, KT740, and KT745 models. It includes gaskets, seals, and jets to replace worn components, commonly used on residential zero-turn mowers, garden tractors, and riding mowers.

Fitment & Compatibility

Before buying, verify your engine model number—this kit fits Kohler 7000 Series with a Command PRO or Courage engine code, not the older Courage single-cylinder or smaller 6000 Series. Cross-reference your original carburetor part number: it replaces Kohler #16 853 21-S, 3285361S, 32 853 47-S, and 12 853 21S. Check the carburetor body for casting marks; this kit does not fit all KT series carburetors—some use a different float or needle seat size. Measure the mounting flange bolt spacing (typically 2.5 inches center-to-center) and confirm the bowl gasket matches your carb’s diameter (about 2 inches). Aftermarket kits may vary slightly; compare the included jets to your originals for size.

Key Things to Know

• Quality variance: At $19, this is a budget aftermarket kit. Seals and gaskets may be slightly thinner than OEM; check for proper sealing or use a thin layer of fuel-resistant sealant.
• Installation difficulty: Moderate to high. You’ll need to disassemble the carburetor, clean all passages with compressed air, and carefully set float height (typically 0.045–0.050 inches). A service manual for your specific engine is strongly recommended.
• Common gotchas: The included main jet may not match your engine’s OEM size—compare and reuse the original if needed. Also, the float needle seat can be a tight fit; lubricate with fuel before pressing in. Missing o-rings on the bowl screw or idle mixture screw are a frequent complaint—verify all parts are present before starting.
• No brass parts: This kit uses aluminum or composite components for some jets; OEM uses brass. This can affect long-term durability, especially in ethanol-blended fuels.

Should You Buy It

This kit is a cost-effective fix for a DIYer with moderate mechanical skill who wants to revive a high-hour Kohler 7000 Series engine without spending $60+ on OEM. It’s best for non-commercial mowers where downtime isn’t critical—if you need absolute reliability or your carburetor body is warped/cracked, buy a new OEM carb instead.