John Deere Z850A

Name: John Deere Z850A
Brand: John Deere

Power

31 hp

Production

2008-2009

Transmission

Hydrostatic

Weight

1360 lbs (60 inch) [616 kg]

Drive

2WD

Over 25 HP 2000s

From the same series:

Z840A

Z860A

Introduction

John Deere Z850A Zero-Turn Mower

The John Deere Z850A is a professional-grade zero-turn mower produced between 2008 and 2009 in Fuquay-Varina, North Carolina, USA. It is designed for high-efficiency turf maintenance, belonging to a series that also includes the Z840A and Z860A models.

Engine and Performance

The tractor is powered by an air-cooled, vertical-shaft V-Twin engine with a displacement of 852 cc. It delivers a gross power output of 31 hp (23.1 kW). The engine features a compression ratio of 8.2:1 and utilizes a dry-type air cleaner. Maintenance intervals for oil changes are set at 100 hours, with an oil capacity of 2.0 quarts (1.9 L).

Transmission and Drive

The Z850A utilizes a hydrostatic transmission, providing infinite forward and reverse speed control. The system is maintained using Hy-Gard (J20D) oil, with a service interval of 500 hours and a total capacity of 2.9 quarts (2.7 L). The mower is configured with two-wheel drive and is equipped with power steering to assist in maneuverability.

Mowing and PTO

The machine features an independent mid-mounted PTO operated by an electromagnetic clutch. It is compatible with 60-inch or 72-inch mower decks, allowing for significant coverage. The specific tire configuration consists of 13x6.5-6 front tires and 24x12-12 rear tires designed for lawn and turf applications.

Electrical and Chassis

The electrical system is 12-volt, supported by a battery with 300 Cold Cranking Amps (CCA) and a 15-amp charging system. The chassis is equipped with a two-post folding Roll-Over Protective Structure (ROPS) for operator safety. Depending on the deck size, the machine weighs between 1360 lbs (616 kg) for the 60-inch model and 1439 lbs (652 kg) for the 72-inch model.

Conclusion

"The John Deere Z850A is engineered for professional landscaping tasks requiring high maneuverability and consistent cutting performance. Its robust construction, combined with a powerful V-Twin engine and hydrostatic drive, positions it as a reliable tool for large-scale turf management."

Introduction

Production Information of John Deere, Z850A

The production information of the tractor (Z850A) includes details about its manufacturing.

Zero-turn mower

Built in Fuquay-Varina, North Carolina, USA


Manufacturer	John Deere

Dimension and Tires Information of John Deere, Z850A

This section sums up the dimension and tires information of the tractor.


Wheelbase	55 inches [139 cm]
Weight	1360 lbs (60 inch) [616 kg]
Height (Folded ROPS)	47 inches [119 cm]
Length	85 inches [215 cm]
	1439 lbs (72 inch) [652 kg]
Height (ROPS)	73 inches [185 cm]


Lawn/turf front	13x6.5-6
Lawn/turf rear	24x12-12

Engine Specifications of John Deere, Z850A

Get the specifications for the engine and if different options are available.

Air-cooled vertical-shaft V-Twin


Exhaust valve clearance	0.005 inches [0.127 mm]
Intake valve clearance	0.005 inches [0.127 mm]
Air cleaner	Dry
Oil change	100 h
Starter	Electric
Idle RPM	1700-3600
Displacement	852 cc [52 ci]
Oil capacity	2.0 qts [1.9 L]
Power (gross)	31 hp [23.1 kW]
Compression	8.2:1
Bore/Stroke	3.33x3.00 inches [85 x 76 mm]
Point gap	0.012 inches [0.305 mm]
Sparkplug gap	0.030 inches [0.762 mm]
Starter volts	12

Transmission Information of John Deere, Z850AY

Discover all variants of transmission available for this tractor model.

Transmission variants 1


Type	Hydrostatic
	Hy-Gard
Oil type	Hy-Gard (J20D)
Gears	Infinite forward and reverse
Oil change	500 h
Oil capacity	2.9 qts [2.7 L]

Mechanical Specs of John Deere, Z850AY

This section summarizes all mechanical information such as the brake system and other specifications.

Two-wheel drive

Power steering

Two-post folding ROPS.

Power Information of John Deere, Z850AY

Discover the power specifications and options available for this tractor model but also PTO (Power Take-off) information.


Mid PTO	Independent
Clutch	Electo-magnetic

Electrical System of John Deere, Z850A

Battery voltage, charging system and ground.


Ground	Negative
Battery Group	U1L
Battery volts	12
Charging amps	15
Battery CCA	300

Frequently asked questions

How much horsepower does the John Deere Z850A have?

The John Deere Z850A delivers 31 HP.

What years was the John Deere Z850A produced?

The John Deere Z850A was produced in 2008-2009.

What transmission does the John Deere Z850A use?

The John Deere Z850A uses a Hydrostatic transmission.

How much does the John Deere Z850A weigh?

The John Deere Z850A weighs 1360 lbs (60 inch) [616 kg].

Is the John Deere Z850A 4WD?

The John Deere Z850A is available in 2WD.

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