Specifications, Service and Repair of Farm and Lawn Tractors

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John Deere 420 Specs

John Deere 420 Engine Specifications

B48G Engine

Engine Model - Onan B48G
Engine Type - Gasoline
Horsepower (SAEJ607) - 14.9 kW (20 hp)
Engine Torque - 4.4 kgm (31.8 ft.lbs)
Fast Idle Engine Rated Speeds (No Load) - 3450 rpm
Engine Rated Speeds Low Idle (No Load) - 1350 rpm
Number of Cylinders - 2
Crankshaft Alignment - Horizontal
Stroke/Cycle - 4 Cycle
Bore - 82.55 mm (3.25 in.)
Stroke - 73 mm (2.875 in.)
Displacement - 782 cm3 (47.7 cu in.)
Compression Ratio - 7.0:1
Cooling - Air
Air Filter Type - Dry with Pre-Cleaner
Lubrication System - Full Pressure w/Filter
Crankcase Capacity (w/o Filter) - 1.4 L (1.5 U.S. qt)
Oil Filter - Replaceable
Spark Plugs - NGK BPR5EFS / Champion RS14YC
Fuel Tank Location - Rear
Fuel Gauge - Std.
Fuel Reserve System - Std.
Fuel (min. octane) - 85 Octane Unleaded
Fuel Pump Location - Engine
Fuel Pump Type - Pulse
Fuel Delivery - Fixed Jet Carburetor
Ignition - Electronic
Type of Starter - 12 Volts, Solenoid
Charging System - 15 amp Stator

P220G Engine

Engine Model - Onan P220G
Type - Gasoline
Horsepower (SAEJ607) - 14.9 kW (20 hp)
Engine Torque - 4.4 kgm (31.8 ft.lbs)
Fast Idle Engine Rated Speeds (No Load) - 3450 rpm
Engine Rated Speeds Low Idle (No Load) - 1350 rpm
Number of Cylinders - 2
Crankshaft Alignment - Horizontal
Stroke/Cycle - 4 Cycle
Bore - 82.55 mm (3.25 in.)
Stroke - 73 mm (2.875 in.)
Displacement - 782 cm3 (47.7 cu in.)
Compression Ratio - 7.0:1
Cylinder Material - Aluminum
Cooling - Air
Air Filter Type - Dry with Pre-Cleaner
Lubrication System - Full Pressure w/Filter
Crankcase Capacity (w/o Filter) - 1.4 L (1.5 U.S. qt)
Oil Filter - Replaceable
Spark Plugs - NGK BPR5EFS / Champion RS14YC
Fuel Tank Location - Rear
Fuel Gauge - Standard
Fuel Reserve System - Standard
Fuel Tank Capacity - 25 L (6.5 U.S. gal)
Fuel (min. octane) - 85 Octane Unleaded
Fuel Pump Location - Engine
Fuel Pump Type - Pulse
Fuel Delivery - Fixed Jet Carburetor
Ignition - Electronic
Type of Starter - 12 Volts, Solenoid
Charging System - 20 amp Stator
Battery Type - BCI Group 22F
Battery Voltage - 12V
Battery Reserve Capacity @ 25 amp - 102 minutes
Battery Cold Cranking amp @ 0F - 491 amp
Headlights - Standard
Rear Reflector/Tail Lights - Standard
Dash Indicator Lights - Standard
Operator Presence System - Standard

John Deere 420 Transmission

Transmission Model - Sundstrand 90
Transmission Type - Shaft-driven Hydrostatic, 2 Ranges
Number of Speeds - Infinite
Forward Speeds, High - 0-15.04 km/h (0-9.35 mph)
Forward Speeds, Low - 0-9.35 km/h (0-5.80 mph)
Reverse Speeds, High - 0-7.52 km/h (0-4.67 mph)
Reverse Speeds, Low - 0-4.66 km/h (0-2.90 mph)
Transmission Capacity w/Filter - 7.1 L (15 U.S. pt)
Transmission Oil Cooler - Std.
Transmission Oil Filter - Std.
Differential Lock - Std.

JD 420 Power Take-Off

Front PTO - Standard
Rear PTO - Optional
PTO Type - Electric Clutch
Control - Elec. Switch on Dash
Front PTO, rpm (No Load) - 3450
Rear PTO, rpm (No Load) - 2000

Steering and Brakes

Steering Type - Hydrostatic Power
Brakes Location - Rear Wheels
Individually Controlled - Std
Brakes Type - Shoe and Drum
Return-to-Neutral Braking - Std
Parking Brake - Yes

John Deere 420 Hydraulic System

Hydraulic System Type - Three-Function (One w/Float)
Hydraulic Couplers - Two Sets

Wheel Treads and Tires

Front Treads - 914 mm (36 in.)
Rear Treads (Narrow) - 818 mm (32 in.)
Rear Treads (Wide) - 980 mm (38.6 in.)
Standard Front Tires (Turf) - 18 x 8.50-8, 4 PR
Standard Rear Tires (Turf or Bar) - 26 x 12.00-12, 2 PR
Inflation Pressure (Front) - 41-152 kPa (6-22 psi)
Inflation Pressure (Rear) - 34-69 kPa (5-10 psi)

John Deere 420 Attachments

50" Mower

Mower Deck Type - Mid-mount
Blades - Three with hydraulic lift
Cutting width - 50 inches (1270 mm)
Belt - Shaft-drive
Weight - 226 lbs (102 kg)
Overall width - 68 inches (1720 mm)
Cut height - 1.5 to 6 inch (30 to 150 mm)

60" Mower

Mower Deck Type - Mid-mount
Blades - Three with hydraulic lift
Cutting width - 60 inches (1520 mm)
Belt - Shaft-drive
Weight - 367 lbs (166 kg)
Overall width - 72.5 inches (1840 mm)
Cut height - 2 to 7 inch (50 to 170 mm)

Blade

Type - Front-mount
Width - 54 inches (1370 mm)
Height - 18 inches (450 mm)
Lift height - 12 inches (300 mm)
Cut depth - 3.5 inches (80 mm)
Weight - 184 lbs (83 kg)
Lift - Hydraulic
Angle - Hydraulic

46" Snow Blower

Type - Front-mount two-stage with hydraulic lift
Clearing width - 46 inches (1160 mm)
Clearing height - 12 inches (300 mm)
Weight - 310 lbs (140 kg)

47" Snow Blower

Type - Front-mount John Deere 47 dual-stage with hydraulic lift
Clearing width - 47 inches (1190 mm)
Clearing height - 23 inches (580 mm)
Weight - 400 lbs (181 kg)

John Deere 420 Loader

Loader type - John Deere 44
Weight - 500 lbs (226 kg)
Height (to pin) - 73 inches (1850 mm)
Clearance, dumped bucket - 53.25 inches (1350 mm)
Dump reach - 22 inches (550 mm)
Dump angle - 50
Reach at ground - 43.75 inches (1110 mm)
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 (1150 mm)

JD 420 Dimension

Wheel Base - 1.3 m (52 in.)
Overall Length - 2.0 m (77 in.)
Overall Height - 1.21 m (47.5 in.)
Overall Width (max.) - 1.31 m (51.5 in.)
Overall Width (min.) - 1.14 m (45 in.)
Turning Radius (Inside Rear Wheel) - 660 mm (26 in.)
Turning Radius (Outside Front Wheel) - 2.2 m (86 in.)
Net Weight (No Fuel) - 408 kg (913 lbs)
Shipping Weight - 450 kg (993 lbs)

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