The Honda HA4120 is a lawn tractor with a rating of approximately 20 hp, placing it at the higher end of its class in terms of power output. It was manufactured from 1998 to 2001. The HA4120 features a 2-cylinder petrol air-cooled engine and two-wheel drive with a hydrostatic transmission. Its operating weight is listed as 253 kg, and it is suitable for operations covering up to 200 acres.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
20 hp
Weight
253 kg
Catalogue coverage
Variants represented
2
Richest spec table
47 rows
Recorded power
20 hp
Recorded weight
253 kg
Transmissions
hydrostatic
Production years
1998-2001
Verified variants
0
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Overview
DistributorHondaReference
ManufacturerJohn DeereReference
Lawn tractorReference
Built in Horicon, Wisconsin, USAReference
Two-wheel driveReference
Open operator station.Reference
Engine
20HP Honda 614cc 2-cyl gasolineReference
Fuel tank9.5 LReference
Honda GXV620Reference
gasolineReference
2-cylinderReference
air-cooled V-TwinReference
Displacement37.5 ciReference
Bore/Stroke77 x 66 mmReference
Power14.9 kWReference
Rated RPM3600Reference
StarterelectricReference
Starter volts12Reference
SparkplugNGK BPR5ESReference
Sparkplug gap0.762 mmReference
Oil capacity2.1 LReference
Transmission
hydrostaticReference
TransmissionTuff Torq K61Reference
Typebelt-driven hydrostaticReference
Gearsinfinite forward and reverseReference
Oil capacity3.4 LReference
Oil typeSAE 10W-30 SHReference
PTO & Hydraulics
Mid PTOindependentReference
ClutchelectricReference
Mid PTO TypepulleyReference
Dimensions
Wheelbase116 cmReference
Weight253 kgReference
Front tire15x6.00-6Reference
Rear tire20x10.00-8Reference
Lawn/turf front15x6.00-6Reference
Lawn/turf rear20x10.00-8Reference
Length173 cmReference
Width150 cmReference
Height103 cmReference
Honda HA4120 attachments
48" mid-mount mower deckReference
HA4120 Serial Numbers
Location:Serial number decal on the rear of the transmission.Reference
Electrical
GroundnegativeReference
Battery volts12Reference
48" Mower deck
Typemid-mount HondaReference
Type3-bladeReference
Cutting width121 cmReference
Cut height2 to 10 cmReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.
