Part of the Kubota Operator Manuals.
This factory Kubota operator manual covers the GR2020G, GR2120, and GR2120AU lawn and garden tractors (publication K1270-7122-1). The GR2020G runs a gasoline engine while the GR2120 and GR2120AU use a Kubota D782 diesel. Across 100 pages it covers safe operation, specifications, mower mounting, engine and machine operation, cleaning, tires and wheels, maintenance, periodic service, and troubleshooting.
Owners can use it to mount and level the mower deck, start and operate the machine, set service intervals, check tire pressures and wheel torque, clean the cooling screen, and work through the troubleshooting charts when the machine will not start or move. Model-specific capacities, torque values, and battery ratings are included.
Delivered as an instant PDF download you can view on any device or print for the shop.
Other edition of this manual
What's Inside This Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Safe Operation | Before Operating, Operating, Pulling Loads, Operation on Slopes, PTO, Lift Link, Servicing | |
| Servicing of Lawn and Garden Tractor | Machine Serial No., Engine Serial No., Mower Serial No., Warranty, Scrapping | |
| Specifications | Engine, Fuel, Capacity, Machine, Dimensions, Mower Deck, Grass Catcher, Mower | |
| Implement Limitations | Front Axle Wf, Rear Axle Wr, Total Gross Vehicle Weight, Ballast | |
| Instrument Panel and Controls | Easy Checker, Choke Lever, Throttle Lever, Head Light Switch, PTO Lever, Key Switch | |
| Mower Mounting | Attaching the Mower, Mounting the Mower Deck, Parallel Linkage, Mower Deck, Mower Lift Stoppers, Dismounting the Mower Deck | |
| Operating the Engine | Starting the Engine, Key Switch, Throttle Lever and Choke Lever, Cold Weather Starting, Block Heater, Stopping the Engine, Engine Stop, Warming Up | |
| Operating the Machine | Operating New Machine, Changing Lubricating Oil for New Machines, Engine Break-In, Machine Break-In, Starting, Operator's Seat, Head Light Switch, Hydraulic Lift Lever | |
| Operating the Mower | Making the Most of Your Mower, Cutting Height, Cutting Height Control Dial, Kra System Normal Operating Mode, PTO Lever, Kra System Override Mode | |
| Cleaning | Cleaning with Water, Cleaning the Mowing System | |
| Tire and Wheels | Tires, Inflation Pressure, Wheels | |
| Maintenance | Service Intervals, Lubricants, Fuel and Coolant | |
| Periodic Service | How to Open the Hood, Daily Check, Checking Engine Oil Level, Checking Amount of Fuel and Refueling, Checking and Cleaning Radiator and Screen to Prevent Overheating | |
| Troubleshooting | Engine Troubleshooting, Battery Troubleshooting, Machine Troubleshooting, Mower Troubleshooting |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Blade bolt torque | 103 to 118 N-m (76 to 87 lbf-ft, 10.5 to 12.0 kgf-m) | p. 92 |
| Headlight bulb replacement value | 24W | p. 91 |
| Front tire inflation pressure (Turf tire) | 160 kPa (1.6 kgf/cm², 24 psi) | p. 48 |
| Rear tire inflation pressure (Turf tire) | 150 kPa (1.5 kgf/cm², 22 psi) | p. 48 |
| Hydrostatic Transmission Oil Capacity | 3.3 L (3.5 U.S.qts.) | p. 19 |
| GR2120, GR2120AU | ||
| Fan drive belt tension (deflection) | approx. 10 mm (0.39 in.) when the center of the belt is depressed with finger pressure of 98 N (10 kgf) | p. 78 |
| Battery type and capacity (GR2120, GR2120AU) | 51R (12V, 475CCA) | p. 19 |
| Engine Oil Capacity (GR2120, GR2120AU) | 2.8 L (3.0 U.S.qts.) | p. 19 |
| Fuel Tank Capacity (GR2120, GR2120AU) | 18 L (4.8 U.S.gals.) | p. 19 |
| GR2020G | ||
| Battery type and capacity, GR2020G | 10U1L (12V, 300CCA) | p. 19 |
| Engine Oil Capacity, GR2020G | 1.9 L (2.0 U.S.qts.) | p. 19 |
| Fuel Tank Capacity, GR2020G | 16 L (4.2 U.S.gals.) | p. 19 |
