1685319-S Carburetor for Kohler 7000 Series Engines KT725 KT730 KT735 KT740 KT745 22HP 23HP 24HP 25HP 26HP Replaces 3285363S 3285367S Carb with Air Filter Tune Up Kit

What It Is

This is a complete carburetor replacement with an air filter tune-up kit for Kohler 7000 Series KT engines (KT725 through KT745). It’s designed for 22–26 HP lawn tractors, zero-turns, and commercial mowers using these engines.

Fitment & Compatibility

Before buying, confirm your engine model (printed on the valve cover or blower housing). This fits Kohler KT725, KT730, KT735, KT740, and KT745 only—not other Kohler series. It replaces OEM parts 3285363S and 3285367S. Measure the mounting bolt spacing (typically 2.5 inches center-to-center) and check that your air filter housing matches the included filter. Not compatible with non-Kohler engines or older Courage/Command series.

Key Things to Know

• Quality variance: At this price, it’s an aftermarket unit. Some users report needing to adjust the float height or clean out machining debris before install.
• Installation difficulty: Moderate. You’ll need to remove the air filter housing, unbolt the old carb, and transfer the throttle/governor linkage. A small screwdriver set and needle-nose pliers help.
• Tune-up kit included: Comes with a new air filter, spark plug, and fuel filter—handy if you’re doing a full service, but check that the air filter shape matches your housing.
• Sealing issues: The gasket may be thinner than OEM. Use a dab of fuel-resistant sealant on the intake gasket to prevent vacuum leaks.

Should You Buy It

This is a budget-friendly option if your original carb is clogged or damaged beyond cleaning and you’re comfortable with basic small-engine mechanical work. It’s not for pros needing OEM reliability, but for DIYers maintaining a single mower, the price and included tune-up kit make it a solid value.