John Deere 420
Series: Lawn & Garden / Riding / Zero-Turn
← Predecessor: 40 · Successor: 430 →
Technical data
Engine
| Engine make | John Deerecorrect |
|---|---|
| Fuel | gasoline/all-fuel/LPcorrect |
| Power | 28 hp (21 kW)correct |
| Rated speed | 1,850 rpmcorrect |
| Cylinders | 2correct |
| Displacement | 113 cu incorrect |
| Bore | 4.25 in (107.9 mm)correct |
| Stroke | 4.00 in (101.6 mm)correct |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Unladen weight | 3250 lbs (1474.2 kg)correct |
|---|
Drivetrain and chassis
| Drive | rear-wheel driveWDcorrect |
|---|---|
| Forward gears | 4correct |
| Reverse gears | 1correct |
Working data
| Fuel tank capacity | 10.5 gal (gas/all-fuel); 20 gal (LP)correct |
|---|
Origin and approval
| Plant | Dubuque, Iowa, USAcorrect |
|---|---|
| Units built | 55correct |
Other data
| Linkage category | Cat Icorrect |
|---|---|
| PTO speed | 540correct |
| Predecessor | John Deere 40correct |
| Successor | John Deere 430correct |
Frequently asked questions
How much power does the John Deere 420 have?
The John Deere 420 delivers 28 hp.
What engine does the John Deere 420 have?
2 cylinders, gasoline/all-fuel/LP.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
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This page carries 25 individual figures for this model. They come from 3 recorded sources; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Sources: Tractor & Construction Plant Wiki (CC BY-SA 3.0) (retrieved August 2026) · Wikibooks Traktorenlexikon (CC BY-SA 4.0) (retrieved August 2026) · tractordata.com (retrieved August 2026) · Values adopted and presented in our own form; changes from the source are possible. · How we check the data
