John Deere LA125 Riding Mower Parts

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The John Deere LA125 was a popular lawn tractor model produced between 2007 and 2014. Known for its reliability and ease of use, the LA125 features a Briggs & Stratton 21 HP engine and a 42-inch mowing deck, making it a great choice for homeowners with medium to large-sized yards who need dependable performance.

The John Deere LA125 was introduced as part of the LA100 series, a line of lawn tractors designed for residential use. Powered by a Briggs & Stratton single-cylinder engine producing 21 horsepower and displacing 344cc, it offered ample power for mowing and light yard work. The tractor features a hydrostatic transmission, providing smooth and responsive control. It was available exclusively with a 42-inch mowing deck. Key features included an electric PTO for easy blade engagement, a comfortable high-back seat, and easy-to-reach controls. The LA125 distinguishes itself from lower-end models with its larger engine and hydrostatic transmission, offering enhanced performance and user experience compared to gear-drive models. It was targeted toward homeowners with larger lawns who needed a more capable machine than entry-level options.

Specifications

Engine	Briggs & Stratton 21 HP 344cc Single-Cylinder
Transmission	Hydrostatic
Deck Size	42 inches
Ground Speed	0-5.5 mph
Fuel Capacity	2.4 gallons
Weight	465 lbs
Years Produced	2007-2014

Maintenance Tips

Replace your mower deck belt and drive belt every 2-3 years, or sooner if you notice signs of wear or slippage.
Sharpen your mower blades at least twice per mowing season to ensure a clean cut and prevent tearing the grass.
Change the engine oil and filter every 50 hours of operation, or at least once a year before storing the mower for the winter.
Before winter storage, stabilize the fuel to prevent gumming and corrosion in the fuel system.

History & Background

The John Deere LA125 was introduced in 2007 as part of the LA100 series, replacing earlier models in John Deere's residential lineup. This series focused on providing a balance of performance and value for homeowners. There were no major redesigns during its production run, making it a consistently reliable choice.

Frequently Asked Questions

What size deck does the John Deere LA125 have?

The John Deere LA125 comes equipped with a 42-inch mowing deck.

What engine is in the John Deere LA125?

The John Deere LA125 is powered by a Briggs & Stratton 21 HP single-cylinder engine.

What belt do I need for my John Deere LA125?

The John Deere LA125 uses a 42-inch deck belt. Verify the exact part number in your operator's manual or by checking the parts diagram for the LA125. The drive belt also has a specific part number that can be found in the manual.

What blades fit the John Deere LA125?

The John Deere LA125 requires two 21-inch blades for its 42-inch deck. Ensure you use blades specifically designed for John Deere mowers to guarantee proper fit and performance.

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