John Deere 390

Heavy-duty gearbox

PTO 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.

Side-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.

Rotor

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

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.

3-point hitch on 360 Flail Mower

3-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.