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John Deere Z850A

John Deere Z850A tractor
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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.
John Deere Z850Azero-turn mowerKawasaki FX850V enginehydrostatic transmissionlawn tractormower deckZ-Trak PRO 800 Series
Power-
Founded-
ModelZ850A

Technical Specifications

Detailed specifications and technical data for John Deere Z850A

Tires

Rear tire:24x12-12
Front tire:13x6.5-6

Engine

Type:gasoline
Model:Kawasaki FX850V
Starter:electric
Idle RPM:1700-3600
Cylinders:2-cylinder
Fuel tank:11.75 gal (44.5 L)
Point gap:0.012 inches (0.305 mm)
Air cleaner:dry
Bore/Stroke:3.33x3.00 inches (85 x 76 mm)
Displacement:852 cc (52 ci)
Oil capacity:2.0 qts (1.9 L)
Configuration:air-cooled vertical-shaft V-Twin
Power (gross):31 hp (23.1 kW)
Sparkplug gap:0.030 inches (0.762 mm)
Starter volts:12
Compression ratio:8.2:1
Oil change interval:100 h
Intake valve clearance:0.005 inches (0.127 mm)
Exhaust valve clearance:0.005 inches (0.127 mm)

Dimensions

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

Electrical

Ground:negative
Battery CCA:300
Battery Group:U1L
Battery volts:12
Charging amps:15

Mechanical

ROPS:Two-post folding ROPS
Drive:Two-wheel drive
Steering:Power steering

Production

Type:Zero-turn mower
Series:Z-Trak PRO 800 Series
Built in:Fuquay-Varina, North Carolina, USA
Years produced:2008 - 2009

Attachments

60" mid-mount mower deck:60 inches (152 cm), Total width: 74 inches (187 cm), 3-blade, right-discharge
72" mid-mount mower deck:72 inches (182 cm), Total width: 86 inches (218 cm), 3-blade, right-discharge

Transmission

Type:hydrostatic
Gears:infinite forward and reverse
Oil type:Hy-Gard (J20D)
Oil capacity:2.9 qts (2.7 L)
Oil change interval:500 h

Power Take-off (PTO)

Type:independent
Clutch:electo-magnetic
Location:Mid PTO

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