14 853 36-S Carburetor Carb for Kohler XT650 XT675 XT149 14 853 49-S 520-706 Engine, for Toro Lawn Mower with 14 083 15-S Air Filter Tune Up Kit

What It Is

This is a complete carburetor assembly (part 14 853 36-S) designed for Kohler XT650, XT675, and XT149 engines, commonly used in Toro lawn mowers. It replaces OEM part 14 853 49-S and includes the necessary gaskets and seals for a direct swap.

Fitment & Compatibility

• Engine types: Kohler Courage XT650, XT675, XT149 (also compatible with 520-706 engine).
• Mower brands: Primarily Toro, but also fits some Craftsman, Husqvarna, and Cub Cadet models using these Kohler engines.
• Check before buying: Verify your engine model number (stamped on valve cover or shroud) and confirm your air filter matches the included 14 083 15-S tune-up kit. Measure the carburetor mounting flange spacing – it should be 2.5 inches center-to-center. This is an aftermarket part, not OEM Kohler, so expect slight differences in finish but identical dimensions.

Key Things to Know

• Quality: Generally reliable for the price, but some users report needing to clean out manufacturing debris (small plastic shavings) from the fuel bowl before installation.
• Installation difficulty: Easy (1/10) – just remove two bolts, swap the old carb for the new one, and reconnect fuel line and throttle linkage. No tuning required.
• Common gotcha: The included gaskets may be thinner than OEM; use a small amount of gasket sealant on the intake manifold side if you get a vacuum leak.
• Air filter kit: The 14 083 15-S kit includes a foam pre-filter and paper filter – ensure your housing fits both layers.

Should You Buy It

Buy this if your Toro mower with a Kohler XT-series engine is surging, hard-starting, or won’t stay running, and you want a quick, budget-friendly fix. It’s ideal for DIY homeowners who don’t want to rebuild the old carb. Skip it if you need an exact OEM replacement for a commercial-grade mower or if your engine model isn’t listed.