Kacarber Carburetor for Troy‑Bilt 42\" Pony Riding Mower - 15.5/17.5HP 500cc Kit with Filters & Gasket

A direct-fit replacement carburetor assembly for Troy-Bilt 42" Pony riding mowers that restores fuel delivery to Briggs & Stratton 15.5HP and 17.5HP 500cc engines.

If your Troy-Bilt 42" Pony or similar tractor powered by a Briggs & Stratton 15.5HP or 17.5HP 500cc engine is running rough, hard to start, or consuming too much fuel, a worn carburetor or its related parts is a common cause. The Kacarber carburetor kit includes the carburetor plus essential consumables—fuel filter, shut-off valve, spark plug, clamps, fuel hose, gasket, and air filter—so you get a ready-to-install unit that addresses most common fuel and ignition issues in one purchase.

How will this carburetor improve starting and idling on my Troy-Bilt Pony?

Replacing an aged or clogged carburetor gives the engine a correct air–fuel mix for reliable cold and hot starts and smoother idle. The included new gasket and fuel filter prevent air leaks and contamination that commonly cause stalling or rough idle.

• Precision-matched replacement for specified Troy-Bilt model numbers.
• New fuel filter stops debris from entering the carburetor.
• Gasket and clamps ensure airtight mounting to the intake manifold.
• Fuel shut-off valve makes drain and storage easier.

Is this kit compatible with my tractor’s exact model and engine?

The Kacarber assembly is designed to fit Troy-Bilt part families used on the 42" Pony and compatible with Briggs & Stratton 15.5HP and 17.5HP 500cc engines listed in the product compatibility. Check your mower’s model plate against the part numbers to confirm fit before ordering.

• Matches Troy-Bilt model references such as 13WM77KS011 and related numbers.
• Built for 15.5HP and 17.5HP Briggs & Stratton 500cc series engines.
• Includes universal components (hose, clamps) for straightforward installation.
• Verify part numbers on your tractor’s tag for exact compatibility.

What comes in the box and what will I need to install it?

The kit ships with a complete carburetor plus replacement consumables so you can finish the swap without buying extra parts. Basic hand tools and moderate mechanical experience are enough to install the unit; professional installation is optional if you prefer.

• Included: carburetor, fuel filter, fuel shut-off valve, spark plug, two clamps, fuel hose, gasket, air filter.
• Required tools: socket set, screwdrivers, pliers, torque wrench recommended for clamp torque.
• Installation time: typically 30–90 minutes depending on experience and tractor setup.
• Simple tuning may be needed for optimal idle and throttle response.

How does this kit help with seasonal maintenance and storage?

Fresh fuel system parts reduce varnish and gum formation during storage and simplify winterization and spring commissioning. The included shut-off valve and new filter make draining fuel and preventing contamination straightforward.

• Shut-off valve eases fuel draining for long-term storage.
• New air and fuel filters reduce debris that causes clogs over idle seasons.
• Replaced spark plug improves cold starts after storage.
• Gasket and hose replacements eliminate common leak points during seasonal cycles.

Who is this for: This Kacarber carburetor kit is aimed at owners and hobby mechanics of Troy-Bilt 42" Pony and similar riding mowers powered by Briggs & Stratton 15.5HP or 17.5HP 500cc engines who want a complete replacement solution. It’s ideal if you need a direct-fit carburetor and all essential consumables in one box to restore dependable starting, smoother idling, and trouble-free seasonal storage.