John Deere D125 Riding Mower Parts
The John Deere D125 riding mower, part of the D100 series, was a popular choice for homeowners needing a reliable lawn tractor. Typically produced from the late 2000s to early 2010s, the D125 is powered by a Briggs & Stratton engine delivering around 20 horsepower. Its typically equipped with a 42-inch mower deck, making it ideal for medium-sized lawns.
The John Deere D125 was introduced as a part of the D100 series, offering a blend of affordability and reliability for residential lawn care. It's primarily powered by a Briggs & Stratton single-cylinder engine, generally around 20 horsepower (14.9 kW) and approximately 500cc. This engine provides sufficient power for mowing and light yard work. The D125 features a hydrostatic transmission, offering smooth and variable speed control. It typically comes with a 42-inch mower deck, allowing for efficient cutting of medium-sized lawns. Key features include a comfortable seat, easy-to-use controls, and a durable frame. The D125 is designed for residential use, suitable for homeowners with lawns ranging from half an acre to a couple of acres. It distinguishes itself from other models in the lineup by offering a balance between power, deck size, and price point, making it an attractive option for those seeking a dependable lawn tractor without unnecessary frills.
Specifications
| Engine | Briggs & Stratton 20 HP 500cc Single-Cylinder |
|---|---|
| Transmission | Hydrostatic |
| Deck Size | 42 inches |
| Ground Speed | 0-5.5 mph |
| Fuel Capacity | 2.4 gallons |
| Weight | 450 lbs |
| Years Produced | Varies by year |
Maintenance Tips
- Replace the mower deck belt every 2-3 years, or sooner if you notice signs of wear such as cracking or fraying.
- Sharpen your mower blades at least twice a season for a clean and healthy cut. Dull blades tear the grass and make it more susceptible to disease.
- Change the engine oil and filter annually, or every 50 hours of use, to maintain optimal engine performance.
- Before storing your John Deere D125 for the winter, stabilize the fuel and disconnect the battery to prevent corrosion and ensure easy starting in the spring.
History & Background
The John Deere D125 was introduced as part of the D100 series, which aimed to provide affordable and reliable lawn tractors for homeowners. There were no major redesigns during its production run, focusing on maintaining its value proposition. It fit into the John Deere lineup as an entry-level option, offering a step up from walk-behind mowers.
Frequently Asked Questions
What size deck does the John Deere D125 have?
The John Deere D125 is equipped with a 42-inch mower deck.
What engine is in the John Deere D125?
The John Deere D125 typically features a Briggs & Stratton single-cylinder engine, producing approximately 20 horsepower.
What belt do I need for my John Deere D125?
The John Deere D125 uses a 42-inch deck belt. Check your John Deere parts manual or refer to a parts diagram to find the exact OEM part number or equivalent aftermarket size for the deck belt and drive belt.
What blades fit the John Deere D125?
The John Deere D125 uses two 21-inch blades to fit the 42-inch deck. Ensure the blades are compatible with the star-shaped center hole mount.

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