Machine models

John Deere 643L and 843L specifications

Entries in this reference
Listing-entry count
2
Short answer

John Deere 643L and 843L: feller bunchers.

Selected configuration figures
ConfigurationDocumented field and quantity
643L
Operating Weight
36,118 lb
Overall Length
20.65 ft
843L
Operating Weight
37,479 lb
Overall Length
20.65 ft
643L and 843L specification matrix — Listing labels reported by the source
Publisher nameSource guideListing-entry countLabels named by the source
John Deere643L and 843L2643L and 843L
Dimensions and weight
Specification643L843L
Overall Length20.65 ft20.65 ft
Wheelbase9.92 ft10.42 ft
Ground Clearance19 in19 in
Height Over Cab10.56 ft10.56 ft
Steering Articulation Angle45 degrees45 degrees
Specification643L
Width2,913 mm
Specification843L
Overall Width9.7 ft
Driveline
Specification643L843L
Engine ModelPowerTech PSS 6.8LPowerTech PSS 6.8L
Displacement415 cu in415 cu in
Engine ManufacturerJohn DeereJohn Deere
Engine Output210.6 hp269.6 hp
Engine Torque680.8 lb-ft841.6 lb-ft
TransmissionHydrostaticHydrostatic
Std Tire Size Front28 L x 2628 L x 26
Emission RatingTier 4Tier 4
PlanetariesInboardInboard
Service Brake TypeWet Disc - InboardWet Disc - Inboard
Parking Brake TypeSpring on / hydraulic releaseSpring on / hydraulic release
Number Of Speeds - Forward22
Number Of Speeds - Reverse22
SteeringArticulated frameArticulated frame
Specification843L
Front AxleOscillating
Capacities
Specification643L843L
Fuel Tank - Diesel104.7 gal104.7 gal
Hydraulic Tank44.7 gal44.7 gal
Alternator Output150 amps150 amps
Performance
Specification643L843L
Travel Speed10.9 mph10.9 mph
PumpAxial pistonAxial piston
Oscillation PointFront AxleFront Axle
Oscillation Angle15 degrees15 degrees
Transmission and speeds
Specification643L843L
System Voltage24 V24 V
Weights
Specification643L843L
Operating Weight36,118 lb37,479 lb
Variants — Source comparison annotation
Source guideDiffering-field count reported
643L and 843L7

John Deere 643L and 843L: feller buncher

643L and 843L: forum references

Related discussion: “Mulching Head On John Deere Feller Buncher”: 643J and 843J.

Used market for the 643L and 843L — Dated first-page listing snapshot
Observation dateListing sourceEquipment searchListings
2026-09-24MachineryTraderJohn Deere feller buncher15
ModelListedModel yearsLowest askingHighest askingMedian askingMedian hours
643L102016 to 2019$69,000$179,000$85,0005,532
843L52016 to 2019$40,000$99,500$49,0006,920
643L and 843L: recall reference — Dated CPSC search
Search dateDatabaseNames queriedSearch result
2026-09-24U.S. Consumer Product Safety CommissionJohn Deere together with the feller buncher 643L, 843LNo matching recall in this search

Sources for this page

Evidence classDocument, classification and recorded date
Reference site
Reference site
Used-market listings
Federal agency data

John Deere 643L and 843L: Configuration records

643L
SpecificationSource figure
Dimensions and weight
Overall Length20.65 ft
Wheelbase9.92 ft
Ground Clearance19 in
Height Over Cab10.56 ft
Steering Articulation Angle45 degrees
Width2,913 mm
Driveline
Engine ModelPowerTech PSS 6.8L
Displacement415 cu in
Engine ManufacturerJohn Deere
Engine Output210.6 hp
Engine Torque680.8 lb-ft
TransmissionHydrostatic
Std Tire Size Front28 L x 26
Emission RatingTier 4
PlanetariesInboard
Service Brake TypeWet Disc - Inboard
Parking Brake TypeSpring on / hydraulic release
Number Of Speeds - Forward2
Number Of Speeds - Reverse2
SteeringArticulated frame
Capacities
Fuel Tank - Diesel104.7 gal
Hydraulic Tank44.7 gal
Alternator Output150 amps
Performance
Travel Speed10.9 mph
PumpAxial piston
Oscillation PointFront Axle
Oscillation Angle15 degrees
Transmission and speeds
System Voltage24 V
Weights
Operating Weight36,118 lb

Source

843L
SpecificationSource figure
Dimensions and weight
Overall Length20.65 ft
Wheelbase10.42 ft
Ground Clearance19 in
Height Over Cab10.56 ft
Steering Articulation Angle45 degrees
Overall Width9.7 ft
Driveline
Engine ModelPowerTech PSS 6.8L
Displacement415 cu in
Engine ManufacturerJohn Deere
Engine Output269.6 hp
Engine Torque841.6 lb-ft
TransmissionHydrostatic
Std Tire Size Front28 L x 26
Emission RatingTier 4
PlanetariesInboard
Service Brake TypeWet Disc - Inboard
Parking Brake TypeSpring on / hydraulic release
Number Of Speeds - Forward2
Number Of Speeds - Reverse2
SteeringArticulated frame
Front AxleOscillating
Capacities
Fuel Tank - Diesel104.7 gal
Hydraulic Tank44.7 gal
Alternator Output150 amps
Performance
Travel Speed10.9 mph
PumpAxial piston
Oscillation PointFront Axle
Oscillation Angle15 degrees
Transmission and speeds
System Voltage24 V
Weights
Operating Weight37,479 lb

Source

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