John Deere 4840 VS Yanmar YM2820 specs comparison
                                         
                                        
                                    
                                
                                                                            
                                        
                                    
                                                                            
                                    
                                                                                        John Deere 4840
General Infos| Make | John Deere | 
| Model | 4840 | 
| Country | United states | 
| Production | From 1978 Until 1982 | 
| Price | - | 
| Tractor type | Row Crop tractor | 
| Fuel | diesel | 
| Service repair manual | John Deere 4840 Manual | 
Dimensions, sizes and tires
| AG front tires | 10.00-16 | 
| AG rear tires | 24.5-32 | 
| Lawn front tires | - | 
| Lawn rear tires | - | 
| Indus front tires | - | 
| Indus rear tires | - | 
| Weight | 14,900 lbs or 6758 kg | 
| Length | 177 inches [449 cm] | 
| Width | 96 inches [243 cm] | 
| Height | 117 inches [297 cm] | 
| Wheelbase | 118.5 inches [300 cm] | 
| Ground clearance | - | 
| Turning radius | 14.7 feet [4.5 m] | 
| Rear tread size | 60 to 131.5 inches | 
| Front tread size | 58 to 100 inches | 
| Turning radius | - | 
Horsepower and engin specs
| Engine capacity | 466 ci or 7.6 L | 
| Cylinders | 6 cylinders | 
| Engine power | - | 
| Engine RPM | 2200 (rpm) | 
| Torque | - | Torque RPM | - | 
| Fuel type | diesel | 
| Fuel injection | - | 
| Fuel tank size | 103 gal or 389.9 L | 
| Oil capacity | - | 
| Oil change | - | 
| Starter motor | - | 
| Starter volts | 12 V | 
| Parts And Accessories | John Deere 4840 Parts | 
| Batteries number | 2 | 
| Batteries voltage | 6 V | 
| Battries Amps | - | 
| Cold Amps | - | 
| Ground force | negative | 
| Charging system | alternator | 
| Charging Volts | - | 
| Charging Amps | - | 
| Trans system | John Deere PowerShift | 
| Trans type | full power shift | 
| Trans gears | 8 forward and 4 reverse | 
| Clutch system | - | 
| Wheel drive | 4x2 2WD | 
| Final drive | - | 
| Steering | power | 
| Braking system | differential hydraulic wet disc | 
| Cabin type | Sound-Gard cab | 
| Differentiel lock | pedal-actuated hydraulic | 
| System | closed center | 
| Valves | 2 or 3 | 
| Pump flow | 23 gpm or 87.1 lpm | 
| SVC flow | - | 
| Steering flow | - | 
| Tank capacity | 16.5 gal or 62.5 L | 
| Hydraulic pressure | - | 
| Max flow | - | 
| Drawbar type | - | 
| Claimed power | 157 hp or 117.1 kW | 
| Drawbar horsepower | 151.21 hp or 112.8 kW | 
| Fuel consumption | 11.3 gal/hour or 42.8 l/hour | 
| Pulling power | 17,307 lbs or 7850 kg | 
| Claimed power | 180 hp or 134.2 kW | 
| Real power | 181.63 hp or 135.4 kW | 
| Engine @RPM | - | 
| PTO Clutch | - | 
| Rear PTO | independent | 
| Rear PTO RPM | 1000 (rpm) | 
| Front PTO | - | 
| Front PTO RPM | - | 
| Mid PTO | - | 
| Mid PTO RPM | - | 
| Fuel consumption | 11.5 gal/hour or 43.5 l/hour | 
| Hitch system | - | 
| Rear hitch | III,IIIN | 
| Rear hitch lift | 8,295 lbs or 3762 kg | 
| Front hitch | - | 
| Front hitch lift | - | 
                                        
                                    
                                                                            
                                        
                                    
                                                                            
                                    
                                                                                        Yanmar YM2820
General Infos| Make | Yanmar | 
| Model | YM2820 | 
| Country | Japan | 
| Production | From 1982 Until 1983 | 
| Price | - | 
| Tractor type | - | 
| Fuel | - | 
| Service repair manual | Yanmar YM2820 Manual | 
Dimensions, sizes and tires
| AG front tires | - | 
| AG rear tires | - | 
| Lawn front tires | - | 
| Lawn rear tires | - | 
| Indus front tires | - | 
| Indus rear tires | - | 
| Weight | 3825 lbs 1735 kg | 
| Length | 125 inches 317 cm | 
| Width | 58 inches 147 cm | 
| Height | 75 inches 190 cm | 
| Wheelbase | - | 
| Ground clearance | - | 
| Turning radius | - | 
| Rear tread size | - | 
| Front tread size | - | 
| Turning radius | - | 
Horsepower and engin specs
| Engine capacity | - | 
| Cylinders | 3 cylinders | 
| Engine power | 28 hp 20.9 kW | 
| Engine RPM | - | 
| Torque | - | Torque RPM | - | 
| Fuel type | - | 
| Fuel injection | - | 
| Fuel tank size | - | 
| Oil capacity | - | 
| Oil change | - | 
| Starter motor | - | 
| Starter volts | 12 V | 
| Parts And Accessories | Yanmar YM2820 Parts | 
| Batteries number | 1 | 
| Batteries voltage | 12 V | 
| Battries Amps | - | 
| Cold Amps | - | 
| Ground force | negative | 
| Charging system | - | 
| Charging Volts | - | 
| Charging Amps | - | 
| Trans system | - | 
| Trans type | - | 
| Trans gears | - | 
| Clutch system | - | 
| Wheel drive | 4x2 2WD | 
| Final drive | - | 
| Steering | - | 
| Braking system | - | 
| Cabin type | Open operator station | 
| Differentiel lock | - | 
| System | - | 
| Valves | - | 
| Pump flow | - | 
| SVC flow | - | 
| Steering flow | - | 
| Tank capacity | - | 
| Hydraulic pressure | - | 
| Max flow | - | 
| Drawbar type | - | 
| Claimed power | - | 
| Drawbar horsepower | - | 
| Fuel consumption | - | 
| Pulling power | - | 
| Claimed power | - | 
| Real power | - | 
| Engine @RPM | - | 
| PTO Clutch | - | 
| Rear PTO | - | 
| Rear PTO RPM | - | 
| Front PTO | - | 
| Front PTO RPM | - | 
| Mid PTO | - | 
| Mid PTO RPM | - | 
| Fuel consumption | - | 
| Hitch system | - | 
| Rear hitch | - | 
| Rear hitch lift | - | 
| Front hitch | - | 
| Front hitch lift | - | 
Related tractor comparison
                        
                    
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Useful links and guides ....
- John Deere provided us with the latest version of its 4840 service repair manual
 - Find All mechanical and electrical parts and accessories of John Deere 4840 farm-tractor here
 
- Get your Yanmar YM2820 manual book version
 - Cabine, electrical And mechanical parts for Yanmar YM2820 farm-tractor here