16 853 19-S Carburetor Tune Up Kit for Kohler KT725 KT730 KT735 KT740 KT745 23-26HP Mower Engine with Air Filter Spark Plug

What It Is

This is a complete tune-up kit for Kohler Command PRO 7000-series engines (KT725–KT745, 23–26 HP). It includes a carburetor rebuild kit (gaskets, seals, needle/seat), plus an air filter and spark plug—everything needed for a full fuel/air system service on zero-turn mowers, lawn tractors, or commercial mowers.

Fitment & Compatibility

Check before buying:

• Engine model: Must be Kohler KT725, KT730, KT735, KT740, or KT745 (23–26 HP). Verify your engine’s model number on the valve cover or engine shroud.
• OEM vs aftermarket: This is an aftermarket kit. Gaskets and seals should match OEM dimensions, but the air filter and spark plug may differ slightly from OEM (Craftsman, Cub Cadet, John Deere, etc.). Compare the included spark plug to your engine’s spec (typically Champion RC12YC or equivalent).
• Deck size irrelevant – compatibility is engine-only.
• Measurement: The carburetor gasket set fits the stock Nikki or Walbro carb on these Kohler engines. If your carb is a different brand, verify gasket shape.

Key Things to Know

• Quality: User-reported high satisfaction (4.9/5 from 9 reviews). Aftermarket parts may have slightly looser tolerances than OEM, but most users report good fit.
• Installation difficulty: Moderate – you’ll need basic tools (screwdrivers, socket set, carb cleaner). Not for absolute beginners; carb disassembly and gasket alignment require care.
• Common gotcha: The air filter may not match all OEM air box designs. Check the filter shape and size against your existing one before disassembling.
• Spark plug gap: The included plug may not be pre-gapped. Always check and set gap to 0.030″ (0.76 mm) for Kohler KT-series.

Should You Buy It

If you own a Kohler KT725–745 engine and want a budget-friendly, complete tune-up kit for a single service, this is a solid choice. It’s best for DIYers comfortable with carb work. If you need exact OEM fit or have a non-standard carb, stick with a Kohler-branded kit.