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John Deere
FM4012
Grooming Mowers

John Deere FM4012

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Hydraulic Wing Deck Locks

The FM4012 has hydraulic lifts for the wing and rear decks to automatically lock them in the up position for transport. It uses a single acting cylinder, requiring only one tractor rear SCV.

Close-up of a flex-wing grooming mower's wing deck hydraulic lift cylinder
Deck Baffling for Quality Cut

Deck baffling around the blade ensures optimum cut quality. The FM4012 deck depth with baffling around the blades ensures exceptional material distribution and a higher quality of cut.

Front view of the underside of an FM40 series flex-wing grooming mower, featuring deck baffling around the three blades
Caster Wheels for Uniform Cut

By having four caster wheels per deck, this mower follows ground contours with ease. Tubular caster wheel arms are bolted to rail supports for added durability.

Green grooming mower shown from the side, featuring caster wheels, a PTO driveline, and a rectangular mower deck
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Cutting Width
Cutting Width Total

12 ft

Cutting Width Total

3.6 m

Cutting Width Center Deck

60 ft

Cutting Width Wing Deck

48 ft

Dimensions
Working Width

12 ft

Working Length

11.7 ft

Transport Dimensions (Lxwxh):

11.25 x 7.6 x 10.25 ft

Weight
Operating Weight

1999 lb.

Shipping Weight

2005 lb.

Shipping Weight

909 kg

Operating Tongue Weight

218 lb.

Transport Tongue Weight

384 lb.

Tractor Requirements
PTO Speed

540 rpm

PTO Power Range

25-60 hp

Gearbox
Gearbox Ratio

1:2.5, 1:1.92

Mower Deck Gearbox Power

30 hp

Drive
Drive Type

Gearbox over V-belt

Wing Driveline

Category 3

Input Driveline

Category 3 CV

Hitch
Hitch Drawbar

Category 1

Hitch Clevis

Floating

Hitch Adjustment

4 positions

Hitch Type

Adjustable Clevis

Hitch Category (Drawbar)

Category 1

iMatch / Quick Hitch

N/A

Deck
Deck Thickness, Gauge

0.1345 in.

Deck Thickness, Gauge

3.416 mm

Deck Thickness, Gauge

10 gauge

Deck Overlap

6 in.

Deck Overlap

15.2 cm

Lift Cylinders

3x10 in.

Lift Cylinders

7.6x25.4 cm

Wing Travel, Degrees

Up 20 degree (angle) and down 15 degree (angle)

Discharge Type

Rear

Cutting Height
Cutting Height Range

1-4.5 in.

Cutting Height Range

2.5-11.4 cm

Cutting Height Adjustment

.5 increments (spacer)

Blade
Average Blade Tip Speed

16200 fpm

Average Blade Tip Speed

4938 m/min

Blade Spindle Quantity

Nine

Blade Spindle Type

Cast iron

Blade Spindle Bearings

Greaseable ball

Blade Overlap

1.5 in.

Blade Overlap

3.8 cm

Blade Dimensions, Type 1

0.25x2.5 in.

Blade Dimensions, Type 1

0.6x6.4 cm

Blade Composition

Heat-treated alloy steel

Blade Tip Speed

17,900 ft./min (Center Deck) / 18,200 ft./min (wing decks)

Number Of Blades

9

Blade Spindles

Ductile iron, lubed for life; sealed, ball bearing

Tires
Transport Tires

20X8-10

Gauge Wheels
Gauge Wheels Size

8x3.5 in.

Gauge Wheels Quantity

10

Gauge Wheels Type

Solid rubber

Caster Wheels
Caster Wheels Quantity

10

Caster Wheels Type

Solid

Caster Wheels Size

10x4

Caster Wheels Size

25.4x10.2

Caster Wheels Bearings

Powder metal bushing

Rollers
Front Roller

Optional

Front And Rear Anti-Scalping Roller

Option (field installed)

Ground Pressure
Ground Pressure

5 pounds per square inch

Belts
Belt Type

B-section, Kevlar

Belt Adjustment

Spring-loaded idler

Construction
Mainframe Construction

10.2 cm / 4 in.

Lighting and Safety
Transport Lights

Optional

Rear Chain Shields

Optional

Auto-Engage Transport Latch

Optional

Markings

Slow-moving vehicle

Setup Time
Setup Time Labor Hours

1.25 hr

Warranty
Machine Warranty

1 year

Gearbox Warranty

1 year

Spindle Warranty

1 year