John Deere 420 garden tractor is an all-purpose, two-wheel drive (2WD) unit produced by John Deere Company. There were approximately 55,000 thousand units produced of this model during its two years production years, from 1956 to 1958. However, after being discontinued, it was given a rebirth again twenty years later as a part of the company’s 400 series.
Being the second model in the lineup of the 400 series, John Deere 420 garden tractor is a seamless replacement for the John Deere 400. It brought some upgrades to fix the issue of its predecessor, such as providing less operating noise. The other models on the lineup of the 400 series are the 425, the 430, and the 455.
The 420 is a physically huge unit. It weighs around 899 lbs, with the dimensions of 77 inches for the length, 51.6 inches for the width, and 47.4 inches for the height.
On the earlier version of the John Deere 420 garden tractor, around 1983 to 1986, the units were equipped with Onan B48G engine. This engine is a 2-cylinder engine that has 3.25 inches of cylinder bore and 2.875 inches of piston stroke and 3500 rpm. It was then replaced by the Onan P220G engine, which is a 2-cylinder engine with 3600 rpm.
Both generate maximum power output of 20 horsepower. This amount of capacity is not something common with the majority of lawn and garden tractors. Due to this power, the model can move at 12 km/h speed forward and 6.2 km/h speed backward. It has 3450 rpm of the front PTO speed and 2000 rpm of the rear PTO speed, along with a hydraulic steering system.
There are quite a lot of attachments that are suitable with John Deere 420 garden tractor, because the unit has a 3-point hitch at the front, back, and rear parts. Some of the examples include 60 inches mid-mounted mower deck, 50 inches mid-mounted mower deck, front-end loader, tiller, blade, snow blower, and other types.
The following information about John Deere 420 garden tractor’s specs, features, price, serial numbers, and other details will allow you to learn better about this model.
John Deere 420 Price
- John Deere 420 Original Price: $7,700 (1992)
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John Deere 420 Serial Number
| 1983 | M00420X222001 |
| 1984 | M00420X285001 |
| 1985 | M00420X315001 |
| 1986 | M00420X360001 |
| 1987 | M00420X420001 |
| 1988 | M00420X475001 |
| 1989 | M00420X595001 |
| 1990 | M00420X010001 |
| 1991 | M00420X100001 |
John Deere 420 Specification
| JOHN DEERE 420 ENGINE | |
| Engine | Onan B48G gasoline 2-cylinder air-cooled opposed-twin |
| Displacement | 781 cc 47.7 ci |
| Bore/Stroke | 3.25×2.875 inches 83 x 73 mm |
| Power | 20 hp 14.9 kW |
| Air cleaner | foam and paper |
| Compression | 7.0:1 |
| Rated RPM | 3500 |
| Idle RPM | 1000-3450 |
| Starter volts | 12 |
| JOHN DEERE 420 MECHANICAL | |
| Chassis | 4×2 2WD |
| Differential lock | mechanical rear |
| Steering | power |
| Brakes | differential mechanical drum |
| Cab | Open operator station. |
| JOHN DEERE 420 PTO | |
| Rear PTO | independent |
| Clutch | electric |
| Rear RPM | 2000 |
| Front PTO | independent |
| Clutch | electric |
| Front RPM | 3400 |
| JOHN DEERE 420 TRANSMISSION | |
| Transmission | Sundstrand 90 |
| Type | shaft-driven hydrostatic |
| Gears | infinite forward and reverse (2-range) |
| Oil capacity | 7.5 qts 7.1 L |
| Oil type | JD Hy-Gard |
| JOHN DEERE 420 DIMENSIONS | |
| Wheelbase | 52 inches 132 cm |
| Length | 77 inches 195 cm |
| Width | 51.5 inches 130 cm |
| Height | 47.5 inches 120 cm |
| Shiping weight | 993 lbs 450 kg |
| Front tread | 36 inches 91 cm |
| Rear tread | 32/38.6 inches 81/98 cm |
| JOHN DEERE 420 TIRES | |
| Ag front | 4.80×4.00-8 |
| Ag rear | 23×10.50-12 |
| Lawn/turf front | 18×8.50-8 |
| Lawn/turf rear | 26×12.00-12 |
| JOHN DEERE 420 ELECTRICAL | |
| Ground | negative |
| Charging system | alternator |
| Charging amps | 20 |
| Battery volts | 12 |
| Battery Group | BCI 22F |
John Deere 420 Attachments
| ATTACHMENT OVERVIEW | |
| 50″ mid-mount mower deck | |
| 60″ mid-mount mower deck | |
| Snowblower | |
| Blade | |
| Front-end loader | |
| JOHN DEERE 44 LOADER | |
| Loader weight | 500 lbs 226 kg |
| Height (to pin) | 73 inches 185 cm |
| Clearance, dumped bucket | 53.25 inches 135 cm |
| Dump reach | 22 inches 55 cm |
| Dump angle | 50° |
| Reach at ground | 43.75 inches 111 cm |
| Rollback angle | 20° |
| Breakout force (bucket) | 725 lbs 328 kg |
| Lift to full height (at pin) | 500 lbs 226 kg |
| Bucket capacity | 0.21 cu yd 0.2 cu m |
| 0.24 cu yd 0.2 cu m | |
| Bucket width | 45,54 inches 11567 cm |
John Deere 420 Review Video
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Conclusion
John Deere 420 garden tractor is a versatile unit with capability to handle various types of attachments to cater to different garden needs. It was one of the most popular models around the 1980s to 1990s. With 20 horsepower output, it’d be unfortunate to miss the opportunity to buy this model.