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John Deere D120

The John Deere D120 is a tractor produced by John Deere Lawn Tractors. It is equipped with a 540 cc 33 ci engine. The listed engine power is Gasoline (gross): 21 hp / 15.7 kW. Transmission: Tuff Torq T40. Operating weight: 450 lbs 204 kg.

Engine Power
Gasoline (gross): 21 hp / 15.7 kW
Fuel & Capacities
4 gal 15.1 L
Transmission
Tuff Torq T40
Operating Weight
450 lbs 204 kg

Overview

John Deere D120 tractor photo
2011 - 2012 D100 SeriesLawn tractor D100 Series Lawn tractor
Production
Manufacturer
John Deere
Lawn tractor
Built in Greeneville, Tennessee, USA
Original price was $1,799 in 2011
John Deere D120 Engine
21HP Briggs & Stratton 540cc 1-cyl gasoline
Fuel tank
4 gal 15.1 L
2.4 gal*California model 9.1 L
Engine details ...
John Deere D120 Transmission
hydrostatic
Transmission details ...
Mechanical
Two-wheel drive
Manual steering
Mechanical shoe on transaxle brakes
Open operator station. Adjustable 15-inch tall seat with 5.5-inches of travel in ten positions. Fender-mounted cup holder. Optional nylon sunshade canopy or snow enclosure.
Power Take-off (PTO)
Mid PTO
manual independent
Dimensions & Tires
Wheelbase
48.9 inches 124 cm
Weight
450 lbs 204 kg
Front tire
15x6.00-6
Rear tire
20x8.0-8
Full dimensions and tires ...
Electrical
Ground
negative
Charging system
alternator
Charging amps
9
Battery volts
12
Battery Group
U1
References
D120 references literature
Operator's Manual D100 Series (OMGX24147) published in 2011
Operator's Manual D100 Series (OMGX24230) published in 2012

Engine

Engine Detail — 540 cc / 33 ci Gasoline

Manufacturer
Briggs & Stratton 33
Fuel Type
Gasoline
Configuration
1-cylinder, air-cooled vertical-shaft
Displacement
540 cc 33 ci
Bore/Stroke
3.70x3.06 inches 94 x 78 mm
Power (gross)
21 hp 15.7 kW
Air cleaner
cartridge
Starter
electric
Starter volts
12
Oil capacity
1.5 qts 1.4 L
Sparkplug gap
0.030 inches 0.762 mm
Point gap
0.012 inches 0.305 mm
Intake valve clearance
0.004 inches 0.102 mm
Exhaust valve clearance
0.006 inches 0.152 mm

Transmission

Transmission — Tuff Torq T40

Transmission
Tuff Torq T40
Type
belt-driven hydrostatic
Gears
infinite forward and reverse
Oil change
sealed unit, owner service is not recommended
Automatic transmission with right-side accelerator and decelerator/reverse foot pedals. Left-side brake pedal. Cruise control is standard equipment.
D120 T40 belt-driven hydrostatic speeds

Dimensions

John Deere D120 Tires
Lawn/turf front
15x6.00-6
Lawn/turf rear
20x8.0-8
Dimensions
Wheelbase
48.9 inches 124 cm
Length
68.75 inches 174 cm
Height
44.5 inches 113 cm
Weight
450 lbs 204 kg

Attachments

Attachment overview
42" mid-mount mower deck
Snowblower
Blade
42" Mower deck
Type
mid-mount John Deere Edge 42
2-blade with manual with spring-assist lift
Cutting width
42 inches 106 cm
Overall width
52 inches 132 cm
Cut height
1 to 4 inch 2 to 10 cm
Cut positions
13

Photos

John Deere D120

John Deere D120

John Deere D120

John Deere D120

John Deere D120

John Deere D120

Recommended Implements & Sizing Guide

Engineering recommendations for John Deere Lawn Tractors John Deere D120 based on its 21 HP power envelope and ASAE agricultural standards.

Implement & OperationRecommended SizeWorkload RatingEngineering Notes
Moldboard PlowPrimary Tillage
1 to 2 Bottom (12")1 - 2 铧 (30 cm)Light DutyIdeal for garden plots and light sandy soil.
Rotary Cutter / MowerMowing & Clearing
4 ft (48 in)1.2 mLight DutyPasture clipping and light brush under 1" diameter.
Rotary TillerSeedbed Prep
42 to 48 in105 - 120 cmLight DutyCovers compact tractor tire width.
Disc HarrowSecondary Tillage
5 to 6 ft (16-18" discs)1.5 - 1.8 m (40-45 cm 耙片)Light DutySmall acreage soil break-up and secondary aeration.
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for John Deere Lawn Tractors John Deere D120.

Estimated Continuous Field Runtime: 3.7 hrs

Approximately 3.7 hours of continuous field operation at ~75% rated power on a full tank (4 gal / 15.1 L).

Estimated 75% Load Fuel Burn~1.1 gal/hr (4.1 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours

John Deere Lawn Tractors John Deere D120 Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for John Deere Lawn Tractors John Deere D120.

Converted Equivalents:

Horsepower (HP)21 hp
Kilowatts (kW)15.7 kW
Metric Horsepower (PS / CV)21.3 PS

Direct Competitor Comparison

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