1685319-S Carburetor for Kohler 7000 Series KT735 KT730 KT725 KT740 KT745 22 HP 23 HP 24 HP 25 HP 26 HP Lawn Mower 7000 Series Air Filter Parts

What It Is

This is a complete carburetor assembly for Kohler 7000 Series KT engines (KT725-KT745), designed to replace a failed or clogged unit on residential zero-turn mowers, tractors, and commercial walk-behinds in the 22-26 HP range. It includes the carb body, float, jets, and gaskets—essentially everything except the air filter.

Fitment & Compatibility

• Engine models: Kohler KT725, KT730, KT735, KT740, KT745 (22-26 HP).
• Check your engine spec number (e.g., KT745-3020) – not just the series. This carb fits many but not all variations; confirm your OEM part number matches Kohler 1685319-S or 24 853 19-S.
• Deck/brand: Fits any mower using one of those engines (e.g., John Deere Z900, Cub Cadet ZT2, Toro TimeCutter, Husqvarna Z200 series). Deck size doesn’t matter.
• Measurements: Overall width ~5.5”, mounting flange bolt spacing ~2.5” center-to-center. Compare to your old carb before ordering.
• OEM vs aftermarket: This is a non-OEM replacement. It may lack the exact jetting or idle circuit tuning of a Kohler genuine part, but it’s a direct physical swap.

Key Things to Know

• Quality variance: Some units arrive with debris in the float bowl or a stuck needle valve. Inspect and blow out all passages with compressed air before installation.
• Installation difficulty: Moderate. You’ll need to remove the air filter housing, fuel line, and throttle/choke cables. Expect 30-60 minutes if you’re handy.
• Tuning may be needed: Aftermarket carbs often require idle speed and mixture screw adjustments (if adjustable). Check for a sealed mixture screw—some are non-adjustable.
• Gasket fit: The included gaskets are thin; use a dab of grease to hold them in place during assembly. Don’t overtighten the mounting bolts—strip-prone plastic intake manifolds.

Should You Buy It

Worth it if your original carb is clogged beyond cleaning and you’re on a budget—this is about 60% less than a Kohler OEM unit. Skip it if you need exact factory performance or have a commercial mower that runs daily; in those cases, the OEM carb is more reliable. For a homeowner or light commercial user, it’s a solid fix.