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  • Heavy-duty gearbox and drive shaft
  • Heavy-duty hood and end plates
  • Side-slicer knives or optional smooth-cut knives available

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Base equipment side-slicer knives or optional smooth-cut knives available
    Side-slicer knivesSide-slicer knives

    Base equipment side-slicer knives are good all-purpose knives. They provide aggressive cutting action in tough conditions.


    The side-slicer knife characteristics are as follows:

    • Knives are made of heat-treated alloy steel for durability.
    • Individual knife weight, along with the centrifugal force created, provides an aggressive cutting action.
    • Edges are ground to provide a sharp cutting surface and reduced horsepower requirements.

    Smooth-cut knives can be ordered as an option:

    • Smooth-cut knives utilize the same mountings as the side-slicer knives.
    • These optional knives are good for grassy, weedy conditions and are self-cleaning.
    • Knives can also be resharpened for added wear life.
Heavy-duty hood and end plates
    Heavy-duty hood and end plates  Heavy-duty hood and end plates

    The hood and end plates are designed for heavy-duty applications:

    • Hood is made of 0.48-cm (0.188-in.) thick steel to resist denting and wear.
    • End plates are made of 0.64-cm (0.250-in.) thick steel to provide structural support and resistance to side thrusts.
    • Full-length torque tube helps prevent twisting when operating on uneven ground.
Heavy-duty gearbox and drive shaft
    Heavy-duty gearboxHeavy-duty gearbox
    PTO drive shaftPTO drive shaft

    All John Deere flail mowers feature this rugged, heavy-duty gearbox with a continuous 65-hp rating and an intermittent 90-hp rating. Another feature included is a five-year, unlimited-hour warranty.

Tractor hookup
    3-point hitch on 360 Flail Mower3-point hitch on 360 Flail Mower
    3-point hitch on 370 and 390 Flail Mowers3-point hitch on 370 and 390 Flail Mowers

    All machines have a Category 2/1 3-point hitch. Bushings or reversible pins are included for Category 2/1 compatibility.


    The 360, 370, and 390 Mowers with centrally mounted hitches are suited for normal cutting conditions:

    • 360 Mower is compatible with quick-coupler Category 1 only.
    • 370 and 390 Mowers are compatible with quick-coupler Category 1 and 2.

    The 390 Mower with a 30.5-cm or 66-cm (12-in. or 26-in.) hitch offset to the right is ideal for trimming along walls, buildings, trees with low-lying branches, fences, or orchards.



  • Cutting width Centered
    1.8 m
    71.5 in.
  • Cutting height 13 to 127 mm
    0.5 to 5 in.
  • Hood thickness 4.8 mm
    0.19 in.


  • Number 122 (66 pairs)
  • Type Heat-treated Reversible Side-slice (Optional Smooth-cut Cupped Knives)


  • Speed 1,850 rpm
  • Diameter 114 mm
    4.5 in.


  • PTO 540 rpm
  • Belts Heavy-duty HC section
  • Gauge roller 140 mm
    5.5 in.

Tractor HP Required

  • Minimum 22 kW
    30 hp
  • Maximum 56 kW
    75 hp


  • Overall width 2.1 m
    81 in.
  • Overall height 0.99 m
    39 in.
  • Overall length 1 m
    40 in.


  • Approximate 410 kg
    904 lb