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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

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

MTD flange lock nut, 5/16-18.

Extension spring, .380 x 2.500

MTD flange lock-nut, 1/4-20.

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

Carburetor insulation gasket

Interlock safety switch

Spring-extension
Log splitters work hard, and when they break down mid-season, you need reliable OEM parts fast. Yard Machines splitters are built on proven hydraulic and small-engine platforms — which means the right replacement parts keep your splitter running year after year. Whether it's a hydraulic pump that's lost pressure, a cylinder seal that's started leaking, or a small engine part that won't cooperate, Repair Clinic carries genuine Yard Machines parts and compatible parts.
Common log splitter failures come down to a few key systems: the hydraulic pump (which builds splitting force), the control valve (which directs pressure), the cylinder and seals (which extend the wedge), and the small engine (which powers it all). Most repairs are straightforward once you have the right part. Use your Yard Machines model number to find exact-fit parts below.
The hydraulic pump is the workhorse of any log splitter. Over time, internal wear reduces pressure output — the wedge slows down, moves weakly, or quits entirely. A failing pump often makes noise (whining, grinding) before it stops working altogether. OEM pump replacement restores full splitting power and is one of the highest-value repairs you can make on an older Yard Machines splitter.
Leaking hydraulic fluid around the cylinder rod is the clearest sign. You'll notice drips on the ground beneath the splitter, especially after a use session. A slow or incomplete wedge extension is another symptom — the rod has lost pressure because fluid is escaping internally. Seal kits are an inexpensive fix compared to a new cylinder assembly.
Ethanol in modern fuel gums up the carburetor jets and needle seat over just a few months of storage. The engine cranks but won't fire, or fires once and dies. A carburetor rebuild kit (jets, needle, gaskets, O-rings) often fixes it without a full carb replacement. Fuel line cracks and primer bulb failure are also common storage-season issues — both cheap, quick repairs.
Look for a metal nameplate or stamped number on the frame, usually near the engine or on the side of the hydraulic reservoir. Model numbers look like MTD-style part codes (e.g., 24A-### or similar). Enter it into the Repair Clinic model lookup tool — it will show you the exact hydraulic pump, valves, cylinder seals, engine parts, and control parts for your splitter, ensuring you order the right fit every time.


Ordering log splitter yard machines log splitter parts online is simple and gives you access to OEM options across every major brand. 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.
On Yard Machines log splitters, check the main frame near the engine or the side of the hydraulic reservoir for a metal nameplate or stamped identification number. You may also find the label on the engine housing, so clean away dirt and hydraulic residue before reading it. The model number is usually an MTD-style code, such as 24A-###, and is different from an individual part number. Enter the complete model number in the Repair Clinic search bar to narrow the full Yard Machines log splitter parts catalog to parts built for your unit, including engine, hydraulic, control, and hardware parts. That means fewer wrong orders and a faster repair.

Fixing your Yard Machines Log Splitter 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.