John Deere lawn tractors

John Deere Z850A

The John Deere Z850A is a zero-turn mower from the Z-Trak PRO 800 Series produced between 2008 and 2009. It features a 31 hp Kawasaki FX850V 2-cylinder air-cooled gasoline engine with a displacement of 852 cc. The mower is equipped with a hydrostatic transmission offering infinite forward and reverse speeds, two-wheel drive, power steering, and a two-post folding ROPS for operator safety. It has a fuel tank capacity of 11.75 gallons and offers mid PTO with an electro-magnetic clutch. The mower supports 60" and 72" mid-mount mower decks with right-discharge and 3-blade configurations. Dimensions include a 55 inch wheelbase, 85 inch length, and weight ranging from 1360 to 1439 pounds depending on deck size. Tires are lawn/turf type with sizes 13x6.5-6 front and 24x12-12 rear. Electrical system features a 12 volt battery with 300 CCA and 15 amp charging.
Power-
Founded-
ModelZ850A

Technical Specifications

Detailed specifications and technical data for John Deere Z850A

Tires
Rear tire24x12-12
Front tire13x6.5-6
Engine
Typegasoline
ModelKawasaki FX850V
Starterelectric
Idle RPM1700-3600
Cylinders2-cylinder
Fuel tank11.75 gal (44.5 L)
Point gap0.012 inches (0.305 mm)
Air cleanerdry
Bore/Stroke3.33x3.00 inches (85 x 76 mm)
Displacement852 cc (52 ci)
Oil capacity2.0 qts (1.9 L)
Configurationair-cooled vertical-shaft V-Twin
Power (gross)31 hp (23.1 kW)
Sparkplug gap0.030 inches (0.762 mm)
Starter volts12
Compression ratio8.2:1
Oil change interval100 h
Intake valve clearance0.005 inches (0.127 mm)
Exhaust valve clearance0.005 inches (0.127 mm)
Dimensions
Length85 inches (215 cm)
Weight1360 lbs (60 inch) (616 kg), 1439 lbs (72 inch) (652 kg)
Wheelbase55 inches (139 cm)
Height (ROPS)73 inches (185 cm)
Height (Folded ROPS)47 inches (119 cm)
Electrical
Groundnegative
Battery CCA300
Battery GroupU1L
Battery volts12
Charging amps15
Mechanical
ROPSTwo-post folding ROPS
DriveTwo-wheel drive
SteeringPower steering
Production
TypeZero-turn mower
SeriesZ-Trak PRO 800 Series
Built inFuquay-Varina, North Carolina, USA
Years produced2008 - 2009
Attachments
60" mid-mount mower deck60 inches (152 cm), Total width: 74 inches (187 cm), 3-blade, right-discharge
72" mid-mount mower deck72 inches (182 cm), Total width: 86 inches (218 cm), 3-blade, right-discharge
Transmission
Typehydrostatic
Gearsinfinite forward and reverse
Oil typeHy-Gard (J20D)
Oil capacity2.9 qts (2.7 L)
Oil change interval500 h
Power Take-off (PTO)
Typeindependent
Clutchelecto-magnetic
LocationMid PTO