New 643L Wheeled Feller Buncher

Feller Bunchers
Key Features
  • 25% larger cab
  • 21% larger front window
  • Increased head tilt angles

More Info


Increased horsepower and machine stability.

The 643L boasts significantly more horsepower for superb responsiveness. Unsurpassed power-to-weight ratio ensures steady multifunction performance in wet or hilly conditions.

Redesigned engine and equipment frame structures.

Optimal weight distribution and longer wheelbase improve balance, for better stability when climbing hills and controlling trees. The 643L's wheelbase is 229-mm (9 in.) longer than their previous model.

Wide-open access to cooling package.

Cooling fan and other cooling system components swing out for quick and easy cleaning. Air-intake compartment is sealed off from the engine compartment to keep things cool.

The cab is 25-percent roomier and 50-percent quieter

In addition to the larger cab size, the controls allow operators to configure joystick buttons to their own individualized preference. The optional joystick and foot controls deliver smooth, low-effort control to help reduce operator fatigue over long shifts.

Quick Dump for the disk saw felling head

New one-button Quick Dump opens both accumulating and grab arms, releasing trees from the pocket. Head-tilt and arm functions are combined into a single motion, minimizing fatigue.


Engine Manufacturer John Deere
Engine Model PowerTech PSS 6.8L
Emission Rating Tier 4
Displacement, ltr (Inches�) 6.8 (414)
Engine Output, kW (hp) 157 (211)
Engine Torque, Nm (lbf / ft) 923 (680)
Number Of Speeds - Forward 2
Number Of Speeds - Reverse 2
Transmission Hydrostatic
Steering Articulated frame
Planetaries Inboard
Std tire size front 28 L x 26
Service Brake Type Wet Disc - Inboard
Parking Brake Type Spring on / hydraulic release
Overall Length, mm (ft/in) 6293 (20 ft 8 in)
Height Over Cab, mm (ft/in) 3216 (10 ft 7 in)
Width, mm (ft/in) 2913 (9 ft 7 in)
Wheelbase, mm (ft/in) 3023 (9 ft 11 in)
Ground Clearance, mm (inches) 484 (19)
Steering Articulation Angle, � � 45
Fuel Tank, ltr (gallons (US)) 396 (104.6)
Hydraulic Tank, ltr (gallons (US)) 169.1 (44.7)
Alternator Capacity, Amp 150
Travel Speed, kph (mph) 17.5 (10.8)
Oscillation Point Front Axle
Oscillation Angle, � � 15
System Voltage, V 24
Pump Axial piston
Operating Weight, kg (lbs) 16383 (36120)