John Deere Z840A-ZTRAK Zero Turn Mower Parts

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The John Deere Z840A ZTRAK is a popular zero-turn mower known for its commercial-grade performance and durability. Typically manufactured in the late 2010s and early 2020s, it features a powerful Kawasaki engine and is available with various deck sizes to suit different property needs. This model is valued for its comfortable ride and precise cutting capabilities.

The John Deere Z840A ZTRAK zero-turn mower was introduced as part of John Deere's commercial ZTrak lineup, designed for landscape professionals and homeowners with large properties. It's powered by a Kawasaki engine, typically in the 23.5 to 25.5 horsepower range. Engine displacement typically ranges from 726cc to 852cc depending on the exact engine spec. The Z840A features a hydrostatic transmission for smooth, responsive control. Available deck widths include 54-inch and 60-inch options, catering to different mowing needs. Key features include a comfortable operator station, heavy-duty frame, and a high-capacity mowing deck designed for efficient grass dispersal. The Z840A is a step up from entry-level residential zero-turns, offering increased power, durability, and cutting performance.

Specifications

Engine	Kawasaki 23.5-25.5 HP V-Twin, 726-852cc, Air-cooled
Transmission	Hydrostatic
Deck Size	54/60 inches
Ground Speed	Up to 10 mph
Fuel Capacity	11.5 gallons
Weight	1131 lbs
Years Produced	2016-2023 (approximate)

Maintenance Tips

Check and replace the mower deck belt every 200-300 hours of operation, or sooner if signs of wear or damage are present.
Sharpen or replace mower blades every 25 hours of use or at the beginning of each mowing season for optimal cutting performance.
Change the engine oil and filter every 100 hours or annually, using the John Deere recommended oil type and filter.
Before storing the Z840A for the off-season, stabilize the fuel, lubricate all grease fittings, and disconnect the battery.

History & Background

The John Deere Z840A ZTRAK was introduced to provide a mid-range commercial zero-turn option. It offered a balance of power, features, and price, making it a popular choice for both professional landscapers and homeowners with large properties. There were no major redesigns during its production run, although minor updates and improvements may have been implemented over the years.

Frequently Asked Questions

What size deck does the John Deere Z840A ZTRAK have?

The John Deere Z840A ZTRAK is available with either a 54-inch or a 60-inch mower deck.

What engine is in the John Deere Z840A ZTRAK?

The John Deere Z840A ZTRAK is powered by a Kawasaki V-Twin engine, typically ranging from 23.5 to 25.5 horsepower.

What belt do I need for my John Deere Z840A ZTRAK?

The deck belt part number varies depending on the deck size. Consult your John Deere parts manual or a parts diagram to confirm the correct belt. Common deck belt part numbers include M154621 and M154958. Also check the drive belt, part number M155404.

What blades fit the John Deere Z840A ZTRAK?

The John Deere Z840A ZTRAK uses three blades. For the 54-inch deck, each blade is typically around 18.5 inches long. For the 60-inch deck, each blade is 20.5 inches long. Ensure you purchase the correct blade length for your deck size and consider blade types such as mulching or high-lift depending on your mowing needs.

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