Find the right part faster
Multiple models matched. Select your model to confirm fit.

Champion Spark Plug (RC12YC). The spark plug ignites the fuel and air mixture in the cylinder to power the engine. If the spark plug is burnt, fouled or damaged the engine may not start or may run rough.

Bow Tie Cotter Pin

Fuel bowl gasket

Small engine Champion spark plug (RJ19LM). If the engine does not start, the spark plug may be defective. The spark plug should be replaced periodically during regular maintenance.

MTD Spark Plug. The spark plug ignites the fuel and air mixture in the cylinder to power the engine. If the spark plug is burnt, fouled or damaged the engine may not start or may run rough.

Carburetor gasket

Fuel cap assembly

Carriage Bolt: 5/16-18 x .750"

Lawn mower wheel assembly. If the lawn mower's self-propel function isn't working, the drive gear on the wheel may be stripped.

Tecumseh fuel line clamp.

Extension spring, .380 x 2.500

MTD flange lock nut, 5/16-18.

Self-tapping screw. 5/16-18 inches by .75 inches.

Drive belt. Width: 3/8 " Length: 35 3/4 "

MTD flange lock-nut, 1/4-20.
Yard clean-up is a whole lot easier when using equipment such as the popular CS 4325 Troy-Bilt chipper shredder. To keep your equipment ready for action, you can rely on Repair Clinic, your source for genuine manufacturer replacement parts. Whether you need to tune up the chipper's engine with a new spark plug, air cleaner, and carburetor part, or replace the chipper's drive belt, blade, or wheel assembly, we can quickly ship you the part you need. To get started, type the full model number of your Troy-bilt wood chipper into Repair Clinic's search bar to see a complete list of compatible parts. You can then refine that list by using the part category and part title filters to identify the specific part you're looking for.Use the online parts finder and model number lookup for exact part identification. Repair Clinic combines a huge part inventory with the repair know-how you need to install those parts correctly. Thousands of instructional videos, articles, and model-specific schematics can be found in our DIY content library, so start browsing today to learn how easy it can be to fix your own outdoor power equipment, home appliances, and heating and cooling products.
When something goes wrong with your Troy-Bilt wood chipper, knowing where to look saves time. Below are the most important questions homeowners and technicians ask when facing Troy-Bilt wood chipper issues.
Wear from age and heat is the #1 cause. Electrical surges, contamination, and mechanical stress also shorten wood chipper life. Regular maintenance and using genuine OEM Troy-Bilt parts extend service intervals significantly.
Look for a data plate or label on your Troy-Bilt unit — location varies by product type but is typically on the door frame, back panel, or inside the access panel. Enter the full model number in our search to match the exact OEM wood chipper for your unit.
Some aftermarket parts work, but genuine OEM Troy-Bilt parts support proper fit and performance and guarantee exact fit. Aftermarket alternatives can vary in voltage, dimensions, and durability — OEM is the safer choice for critical parts.


Ordering Troy-Bilt wood chipper parts online is simple and helps you find genuine OEM parts for your unit. With same-day shipping on most in-stock items, you'll have your replacement part fast, minimizing downtime. Our model/part number lookup finds the exact OEM part for your unit, and every order is backed by our 365-day return policy and price-match guarantee. Browse our repair help section for troubleshooting tips, part testing guides, and step-by-step installation videos for your specific product.
Troy-Bilt typically places the wood chipper model number on a label attached to the frame behind the engine, beneath the handle panel, or on the auger housing. Clear away leaves and debris, then look for a label listing the model and serial numbers. Copy the complete model number, including letters, numbers, and hyphens, because similar Troy-Bilt wood chippers can use different parts. Enter it in the search bar to narrow the catalog to parts made for your entire machine, from engine parts to belts, blades, and hardware. That means fewer wrong orders and a faster repair.

Fixing your Troy-Bilt Wood Chipper starts with the right diagnostic information. Repair Clinic's online library includes common-symptom articles, part testing walkthroughs, and repair videos that help you pinpoint what needs replacing. Once identified, the model number lookup confirms the correct OEM part, and the matching installation video guides you through the swap.