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John Deere Q850R
Q850R
Stand-On Mowers
Overview:
Experience professional-grade efficiency with the Q850R QuikTrak™ Stand-On Mower. Advanced ergonomic design and superior maneuverability keep you comfortable and productive throughout demanding workdays.
- 27-hp (20.1-kW)
- 54- and 60-in. 7Iron™ PRO Decks
- Mow Up to 12 mph
- Warranty: 36 Months or 1500 Hours, Which Ever Comes First; First 24 Months, No Hour Limitation
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Features
Spacious Operator Platform With Room to Move

The R Series QuikTrak™ mowers offer a spacious operator platform, featuring a wide foot platform and fender-mounted foot holds for varied stances. Designed for operator comfort and stability, the spring-loaded platform smooths out bumps and reduces operator fatigue.
Durable 7Iron™ PRO Mower Deck

The 7Iron™ PRO Mower Deck is forged from a single piece of 7-gauge steel, offering exceptional strength and durability. With fewer welds and a deep-deck design, it provides excellent airflow and clipping dispersal for a high-quality finish in diverse mowing conditions.
Integrated Transaxles

Tuff Torq® TZT13 integrated transaxles combine commercial-grade hydraulic pump and wheel motor into a single housing for each side. This design reduces potential leak points, providing exceptional cooling and durable performance.
Specifications
Mower Decks
| Mower Deck Size | 54-in. (137-cm) 7Iron™ PRO side-discharge 60-in. (152-cm) 7Iron™ PRO side-discharge |
| Deck Construction | 7-Iron™ PRO: one-piece forged steel |
| Deck Thickness | 7 gauge / 0.180 in. / 4.6 mm |
| Discharge | Side |
| Height-Of-Cut Range | 1.5-5 in. |
| Height-Of-Cut Range | 3.8-12.7 cm |
| Height-Of-Cut Increments | 0.25 in. |
| Height-Of-Cut Increments | 0.64 cm |
| Cutting Width | 54/60 in. |
| Cutting Width | 137/152 cm |
Drivetrain
| Transmission | Tuff Torq TZT13 IHT |
| Hydraulic Pumps | 0.79 cu in. / 13 cc |
| Wheel Motors | 13 cu in. / 213 cc |
| Speed Range | 0-12 mph |
| Speed Range | 0-19.3 km/h |
| Forward Speed | 0-12 mph |
| Forward Speed | 0-19.3 km/h |
| Reverse Speed | 0-6 mph |
| Reverse Speed | 0-9.7 km/h |
| Speed Direction And Control | Twin hand-controlled levers |
| Hydraulic Capacity | 6 U.S. qt |
| Hydraulic Capacity | 5.7 L |
| Hydraulic Oil Cooler | Two 8.5 in. (22 cm) fans |
| Filter | Two internal and replaceable |
Wheels
| Caster Wheel Type | Flat free |
| Caster Wheels | 13x5-6 |
| Front Anti-Scalp Rollers | RH, center, LH |
Brakes
| Dynamic Braking | Dual hand-controlled levers |
| Park Brake | Internal wet disk |
| Park Brake Actuation | Hand lever |
Fuel System
| Fuel Type | Gasoline |
| Fuel Tank Capacity | 12 U.S. gal. |
| Fuel Tank Capacity | 45.3 L |
| Fuel Tank Switch/Shut-Off Valve | No |
Engine
| Engine Manufacturer/Model | FX850V |
| Engine Power | Gross at 3,600 rpm: 27 hp / 20.1 kW |
| Displacement | 52 cu in. |
| Displacement | 852 cc |
| Cylinders | 2 |
| Crankcase Capacity | 2.4 U.S. qt |
| Crankcase Capacity | 2.3 L |
| Oil Filter | Full flow, replaceable |
| Lubrication | Full pressure |
| Cooling | Forced air, with integrated clean out ports and oil cooler |
| Air Cleaner | Heavy-duty canister type with safety element |
Dimensions
| Length | Foot platform up, 70 in. / 183 cm Foot platform down, 74.75 in. / 190 cm |
| Width - With Chute Down | 74 in. |
| Width - With Chute Down | 188 cm |
| Weight | 1155 lb. |
| Weight | 524 kg |
Tires
| Drive Wheels | 24x12-12 pneumatic / 24x12N12 Tweel |
| Load Rating | 4 PR |
Additional Information
| Date Collected | 08/28/2023 00:00:00 |
Blades
| Thickness | 0.25 in. / 0.64 cm |
| Blade Tip Speed | Approximately 18,000 fpm / 5486 m/min |
| Number | 3 |
PTO
| Type | Electro-magnetic with brake, 200 lb-ft / 271 Nm |
| Drive | V-belt |
Electrical System
| Charge System | 20 amp |
| Battery Voltage | 12 V |
| Cold Cranking Amp | 300 amp |
| Hour Meter | Display panel including hour meter, fuel level, engine speed, system voltage, low engine oil pressure indicator, starting interlock indicators (PTO, operator presence, park brake), caution warning, stop warning, and on-board diagnostics |
| Operator Presence Starting System | Yes |
Buyer's note
| Warranty | 36 months or 1500 hours, whichever comes first. First 24 months, no hour limitation. |
Contact Us
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325 Walt Messick Road
Harrington, Delaware 19952
Phone: (302) 398-3729
Toll Free: (800) 237-1272