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.
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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 |
