Carburetor Replacement for Kohler Engines 7000 Series 22HP 23HP 24HP 25HP 26HP KT730 KT735 KT740 KT745 1685321-S 32 853 61-S Carb

What It Is

This is a direct-replacement carburetor for Kohler 7000 Series engines found on riding mowers, zero-turns, and tractors. It mixes fuel and air for combustion, replacing a worn or clogged OEM unit on 22HP–26HP models.

Fitment & Compatibility

Check these before buying:

• Engine model: Fits Kohler KT730, KT735, KT740, KT745 only (7000 Series). Verify your engine’s model number on the valve cover or shroud.
• OEM part numbers: Replaces 1685321-S and 32 853 61-S. Cross-reference your old carb’s stamped number.
• Machine compatibility: Works across brands (John Deere, Cub Cadet, Husqvarna, etc.) if they use the specified Kohler engine. Confirm your mower’s engine, not deck size.
• Aftermarket note: This is not OEM Kohler. It may lack the exact jetting or gasket quality. Measure the mounting bolt spacing (typically 2.75" center-to-center) and intake flange shape to match.

Key Things to Know

• Quality variance: At $28, it’s a budget option. Expect basic metal/plastic construction; some units may need minor deburring or gasket trimming for a perfect seal.
• Installation difficulty: Moderate. You’ll need to remove the air filter, fuel line, and throttle/governor linkage. Note spring positions with photos before disassembly.
• Tuning required: After install, you’ll likely need to adjust idle and mixture screws (if adjustable). A vacuum leak from a poor gasket fit is the most common issue.
• Fuel system prep: Replace the fuel filter and clean the tank/lines of debris. A dirty system will ruin the new carb quickly.

Should You Buy It

This is for DIYers who want a cheap, quick fix for a non-starting or rough-running Kohler 7000 Series engine. It’s not for pros expecting OEM durability or precision—expect to tweak it and possibly replace it sooner than a factory carb. Right for budget repairs on older mowers, not for heavy commercial use.