| Mower deck | Q820M Q850M Q850R Q865R EFI |
| 48-in. (122-cm) 7Iron PRO | x |
| 54-in. (137-cm) 7Iron PRO | x x x |
| 60-in. (152-cm) 7Iron PRO | x x x x |
| 72-in. (183-cm) 7Iron PRO | x |
| Models | Location and status GPS speed Geofencing and curfews Engine hours Maintenance planner Machine Analyzer Tool Fuel level Fuel consumption Diagnostic trouble codes Service Advisor Remote |
| Z700 ZTrak Mowers | X X X Key X X --- --- --- --- |
| Z900 ZTrak Mowers with carbureted engines | X X X Key X X --- --- --- --- |
| Z900 ZTrak Mowers with EFI engines | X X X Sync X X X X X X |
| Z994R ZTrak Mowers | X X X Key X X --- --- --- --- |
| Z997R ZTrak Mowers | X X X Sync X X --- X X X |
| E Series QuikTrak Mowers | X X X Key X X --- --- --- --- |
| Q820M, Q850M, and Q850R QuikTrak Mowers | X X X Sync X X X --- X --- |
| Q865R EFI QuikTrak Mowers | X X X Sync X X X X X X |
| R Series commercial walk-behind mowers | X X X Key X X --- --- --- --- |
| 1550 TerrainCut Front Mowers | X X X Key X X --- --- --- --- |
| 1570, 1575, 1580, and 1585 TerrainCut Front Mowers | X X X Key X X --- X X X |
| 1600 TerrainCut Wide-Area Mowers | X X X Key X X --- X X X |
| Model | Compatible model years Installation attachment |
| Gasoline-powered Z900 ZTrak Mowers | 2024 and newer (SN 130,001-) BUC11759 |
| QuikTrak Mowers | 2024 and newer (SN 010,001-) BUC11744 |
| TerrainCut Front Mowers | 2022-2023 (SN 080,001-110,000) BUC11797 |
| Engine displacement | FS603cc FS726cc FX726cc FX852cc |
| Average consumption (lb [kg]/hr) | 3.9 (1.8) 4.2 (1.9) 4.2 (1.9) 5.8 (2.6) |
| Run time (hours) with 20-lb (9.1-kg) tank | 5.1 4.8 4.8 3.4 |
| Run time (hours) with 33.5-lb (15.2-kg) tank | Not available 8.0 8.0 5.8 |
| Run time (hours) with 43.5-lb (19.7-kg) tank | Not available 10.4 10.4 7.5 |
| Engine Manufacturer/model | FX850V |
| Engine power | Gross at 3,600 rpm: 27 hp 20.1 kW |
| Fuel tank capacity | 12 U.S. gal. 45.3 L |
| Mower deck size | 54-in. (137-cm) 7Iron™ PRO side-discharge 60-in. (152-cm) 7Iron™ PRO side-discharge |
| Blade tip speed | Approximately 18,000 fpm 5486 m/min |
| Transmission | Tuff Torq TZT13 IHT |
| Speed range | 0-10 mph 0-16.1 km/h |
| Drive wheels | 22x12-12 pneumatic 22x11N12 Tweel |
| Caster wheels | 13x5-6 |
| Warranty | 36 months or 1200 hours, whichever comes first. First 24 months, no hour limitation. |
| Manufacturer/Model | FX850V |
| Power | Gross at 3,600 rpm: 27 hp 20.1 kW |
| Displacement | 52.0 cu in. 852 cc |
| Cylinders | Two, V-twin |
| Crankcase capacity | With filter, 2.4 qt 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 |
| Fuel type | Gasoline |
| Fuel tank switch/shut-off valve | No |
Inventory moves fast. Call your nearest store to confirm this unit is still here and get the current price.
Yes. Send us the make, model, year and hours of your machine and we will apply the equity.
Often yes, through John Deere Financial and outside lenders depending on the machine. Subject to approved credit and to change.
Yes. We move equipment between all 17 of our Indiana and Ohio dealerships.
Tell us what you want to know about the John Deere Q850M.