The John Deere 840 is a tractor with a rating of approximately 70 hp, positioned towards the lower end of its class in terms of power output. This model was manufactured between 1959 and 1962. It features a 2-cylinder diesel liquid-cooled engine, coupled with two-wheel drive and a 6-speed gearbox. The operating weight of the 840 is specified as ranging from 10400 to 23200 pounds, with a capacity 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
70 hp
Weight
10400 to 23200 pounds
Catalogue coverage
Variants represented
2
Richest spec table
32 rows
Recorded power
70 hp
Recorded weight
4717 kg
Transmissions
6-speed gear
Production years
1959-1962
Verified variants
0
1 linked source document displayed
Hover a source tag to verify
Overview
ManufacturerJohn DeereReference
Industrial tractorReference
Original price was $6,625 in 1961Reference
The 840 was an industrial scraper based on the model 830 tractor. A Hancock 7E2 scraper was used until number 8400900 when a John Deere Model 400 scraper was used. The first 63 were assembled by Hancock, then Deere took over production.Reference
Two-wheel driveReference
SteeringpowerReference
Open operator station.Reference
Variants
830farm tractorReference
Engine
John Deere 7.7L 2-cyl dieselReference
Drawbar (claimed)52.0 kWReference
Belt (claimed)56.4 kWReference
John DeereReference
dieselReference
2-cylinderReference
liquid-cooledReference
Displacement7.7 LReference
Bore/Stroke156 x 203 mmReference
Firing order1-2Reference
Transmission
6-speed gearReference
TypegearReference
Gears6 forward and 1 reverseReference
Clutchdry discReference
Dimensions
Weight10400 to 23200 poundsReference
Ag front8.25-20Reference
Ag rear18-26Reference
Weight4717 kgReference
Weight10523 kgReference
840 Serial Numbers
19598400000Reference
19608400506Reference
19618400845Reference
FAQ: How to read a serial number table.Reference
Links
840: Photos and information on the 840Reference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.
