John Deere 420

1983–199120 HPgasolinelawn
B
Average
Score: 58.8/100
Recalls
322
Found
Known Issues
15
3 high severity
Auction Records
24
Avg €27,990
Reliability
B
59/100

Specifications

Engine Power20 HP
Engine (kW)15 kW
Fuel Typegasoline
Transmissionshaft-driven hydrostatic
Categorylawn
Production Years1983–1991

Safety Recalls

322 found
Safety recall — John Deere JD-8R370 (Japanese market, reference 1241810)

Japanese manufacturer safety recall affecting the lighting. Declared production window: 2021–2022.

LightingJP
On certain side-by-side UTVs, the owner's manual is missing information for how a person can contact Transport Canada to report a safety concern.

On certain side-by-side UTVs, the owner's manual is missing information for how a person can contact Transport Canada to report a safety concern. Canadian regulations require all companies to provide this information in the owner's manual.

OtherCA
On certain side-by-side UTVs, the owner's manual is missing information for how a person can contact Transport Canada to report a safety concern.

On certain side-by-side UTVs, the owner's manual is missing information for how a person can contact Transport Canada to report a safety concern. Canadian regulations require all companies to provide this information in the owner's manual.

OtherCA
On certain side-by-side UTVs, the owner's manual is missing information for how a person can contact Transport Canada to report a safety concern.

On certain side-by-side UTVs, the owner's manual is missing information for how a person can contact Transport Canada to report a safety concern. Canadian regulations require all companies to provide this information in the owner's manual.

OtherCA
Safety recall — John Deere JD-7R310 (Japanese market, reference 1241260)

Japanese manufacturer safety recall affecting the electronic control. Declared production window: 2020–2024.

Electronic controlJP
+317 more recalls
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Known Issues

15 reported
3 high7 low5 medium
Blown ignition fuse preventing engine start
high

30 amp ignition fuse blown, preventing fuel shut-off solenoid from receiving voltage. Engine would not start until fuse was replaced with circuit breaker.

electronics
Hydraulic system failure after 15 minutes of operation
high

Hydraulic system stops working after approximately 15 minutes of operation. Tractor brought to repair shop four times during summer. Repairs documented but issue appears persistent.

hydraulics
Hydraulic system fails after 15 minutes of operation
high

Hydraulic system stops functioning after approximately 15 minutes of operation. Tractor required multiple repair visits to local shop without permanent resolution of the issue.

hydraulics
Engine cranking failure due to blown ignition fuse
medium

Engine fails to crank with key in start position. Diagnosis revealed blown 30 amp ignition fuse and dirt/debris buildup in fuse box around fuses and relays, causing intermittent starting issues.

electronics
CA: John Deere Review by Harold from Coshocton, OH (2/5 stars) I have a 4
medium

I have a 420 John Deere with a 54 inch deck. I let my grass grow to 5" and mow 3 1/2" high. My mower deck is clean, blades are sharp, and I don't go fast. It will NOT stand up the grass and cut the grass that the front tires mash down. If you mow your grass 2 inches high, about any mower will do a decent job. I have talked to other John Deere owners who prize their lawns and they all have the same

pto
+10 more issues
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Market Value

Average
€27,990
Median
€27,854
Range:€5,152 €76,132
Avg Hours:7,809 hrs
Records:24 sales
Recent Sales
1956 · Bring a Trailer€5,152
1957 · Bring a Trailer€6,440
+22 more sales
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Hours Benchmark

Class: Compact (040 HP)
Average hours at sale for this model
0Avg: 7,809 hrs6,000
Low use150 /year
Typical300 /year
High use500 /year
Typical lifetime6,000 hours
Expected life15 years

Have a specific John Deere 420 VIN to check?

Model data shows the average — a VIN/PIN lookup pulls the per-unit history (theft, recalls, prior owners, hours).

Found on the chassis plate or registration papers

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