2025 John Deere 9009A TerrainCut™

Stamped rotary decks and rigid frame construction to maximize deck durability

The 9009A TerrainCut Rough Mower is equipped with five and the 7400A TerrainCut Trim and Surrounds mower is equipped with three 27-in. (68.6-cm) stamped rotary decks for superior productivity and strength. The rotary decks perform exceptionally well across a wide range of grass types, including warm- and cool-season grasses.

Rear-discharge design provides premium cut quality and dispersal for less clumping and blowing for clean up

The 9009A and 7400A TerrainCut™ Mowers 27-in. (68.6-cm) deck features a deck design with an asymmetric rear discharge cutout and molded chute to promote better airflow, leading to improved clipping dispersal and cut quality.

The unique shape of the deck shell cutout includes a heavily rounded opening on one side that gradually transitions to a larger opening on the other side of the cutout, allowing the grass to exit the deck evenly while significantly reducing the possibility of the deck congestion. This design incorporates deck structure along the bottom of the discharge area that reduces sound power, does not affect cut quality negatively, and acts as a foot guard eliminating the need for an external guard that can lead to external grass build up which can be dropped in the mowing pass over time.

When the asymmetric deck shell discharge shape is used in combination with the asymmetric discharge chute, this deck outperforms the competition in cut quality by minimizing clumping with smooth transitions and guiding the discharge material in a more dispersed pattern.

The improved dispersal will lead to less clean up and blowing, allowing machines to mow earlier in the day while saving time and reducing labor.

The proper blade selection for heights of grass, grass type, and sharp blades are keys to improved cut quality and dispersal. The removal of no more than one third of the grass blade is recommended. During heavy growth times it may require changing blades, mowing more often or raising the height of cut to improve clipping dispersal.

Tooled notch adjustment system makes height-of-cut (HOC) changes a breeze

One common element among John Deere golf mowing products, reel or rotary, is that adjustments are quick and easy. The 74000A, 8800A, and 9009A TerrainCut™ Rough, Trim, and Surrounds Mowers are no different. All HOC adjustments can be performed with simple tools utilizing an innovative notch system.

Height of cut changes on rotary decks are infrequent adjustments, and customer feedback has been that they prefer a system that utilizes tools with more positive clamp load to stay engaged and keep height of cut consistent in tough conditions.  With the tooled design, there are no hand-engaged latches that may loosen over time.  Instead, a bolt and nut are used to more positively clamp the adjustment in place.  The deck still utilizes the notch system with a pointer and numbered indicators for the height of cut.

To adjust the deck, (2) 15 mm wrenches or sockets will be required, one to loosen the nut on the inside of the adjuster and the second to hold the bolt head.  The system only needs to be loosened enough to disengage the teeth from the notches, but does not need to be completely removed to perform the adjustments. This allows the rollers to rotate upward and downward freely and easily.

Locate the HOC indicator on the inside of the adjuster arm and line up the tabs or use the top edge of the adjuster arm to line up the height on the gauge located on the outside. Re-engage the notches and re-tighten.

The adjustments must be performed on both the front and rear roller, and both rollers have the same adjustment process. A HOC label is also located on the rear of the deck to serve as a guide for setting the height of cut.

The HOC is adjustable 1.9 cm (3/4 in.) to 10.2 cm (4 in.), in 0.64-cm (1/4-in.) increments.

Standard GRIP all-wheel drive traction system provides superior traction by reducing wheel slip

For superior traction with a true hydraulic four-wheel drive (4WD), the GRIP all-wheel drive traction system is standard equipment on the 8800A and 9009A TerrainCut™ Rough Mowers. This system reduces wheel slip by sending flow from the front wheel to the opposite rear wheel.

For example, if the front-right wheel starts to slip, hydraulic flow is diverted to the left-rear wheel to maintain positive traction. By allowing the flow to cross over to the opposite rear wheel, the system maintains traction not only while climbing straight up hills, but also on side-hills.

The GRIP all-wheel drive traction system is always engaged when driving forward with the 8800A and 9009A TerrainCut Rough Mowers. There are no electronics to engage the 4WD system, simplifying the electrical system and the design of the valve at the rear of the machine.

In reverse, a standard switch is provided that disengages 4WD. The switch senses the reverse pedal has been depressed and shuts off flow to the rear drive wheels. This ensures the front drive tires are doing the work in reverse rather than the rear tires, minimizing wheel slip and scuffing of turf when backing up an incline.

The end result is more options for mowing different terrain than just straight up and down. The GRIP system ensures that when mowing slopes on an angle, the high side tire maintains tractions unlike like mechanical systems used on other rough mowers. This increases productivity in tight areas and reduces damage to turf from wheel slippage.

eHydro™ hydrostatic pump and large-capacity wheel motors for serious hill-climbing capabilities

The eHydro™ traction pump and wheel motors in the new A-model take performance, traction, and operation to the next level.

The new system was designed to take on the most challenging course conditions. The traction drive pump flow increased 35 percent and the wheel motors increase 17 percent in displacement over prior models. These increases to the traction system makes the A-models ideal for undulating terrain providing superior performance and traction out on the course.

The new traction system in the A-models is driven by a servo-controlled hydrostatic pump. The control of the pump is no longer mechanical linkages, but instead is electronic.

Approximately 110 parts have been eliminated from the traction drive system compared to prior models. The new design also eliminated two adjustments. Reducing the complexity of the drive system means no more linkages to adjust or repair, decreased routine maintenance, and providing reliable day-in/day-out operation.

AutoPedal™ feature lowers sound levels and fuel consumption during transport

The AutoPedal feature controls engine rpm and transport speed of the machine through the eHydro™ foot pedal controls. AutoPedal is similar to an automobile gas pedal operation; the more the forward pedal is pressed, the faster the machine moves and the higher the engine rpm; pressing the pedal less, the slower the machine moves and the lower the engine rpm.

On conventional machines, the engine rpm is controlled by the operator by means of a manual or electric/manual throttle. Operators are trained to always operate the engine at wide-open throttle. Running at wide open throttle means running the engine at its fastest speed, which increases the sound levels and fuel usage.

The AutoPedal system allows the engine to only run as fast as needed, meaning that as operators transport around the course, the engine speed is only as fast as needed for the transport speed. If the operator approaches play and stops, the engine rpm goes to idle. This makes transporting quieter and since the engine does not run full speed all the time, it reduces fuel consumption.

Once the operator reaches the mowing site, engages the mow switch on the CommandARM™ controls, the engine rpm automatically increases to full throttle for mowing.

LoadMatch™ electronic setting compensates speed of machine to keep power to the cutting units to maintain cut quality

LoadMatch is an electronic setting through the TechControl display that allows managers more control of the machine and how it is operated when out on the course.

Most operators will mow as fast as the mow setting will allow, keeping their traction pedal all the way down. However, in some conditions this can lead to poor cut quality.

One example is getting behind in mowing due to weather conditions. The grass is long and lush and to properly cut that amount of grass at one time, the operator should slow the traction speed. This allows the cutting units to maintain proper turning speed, process the grass, and properly cut in one pass. Not slowing down causes missed grass and an uneven appearance. This affects the after-cut appearance and also reduces productivity by having to mow a second time to properly cut the lush grass.

The LoadMatch feature compensates the traction speed of machine to keep power to the cutting units. In the long, lush conditions described above with LoadMatch engaged, the operator would still have the traction pedal all the way down, but the machine would sense the load and slow the traction speed to properly cut the mowing pass. Once the load is reduced, the machine will return to the normal mow speed.

LoadMatch puts the manager in control of cut quality instead of the operator.

Double-acting, single-rod hydraulic steering cylinder for lines in roughs as straight as fairways and greens

The 8800A and 9009A TerrainCut™ Rough Mower puts stripes on the roughs as straight as they are on the greens. Utilizing the same style steering cylinder as found on the 2500B PrecisionCut™ Mower, 2500E E-Cut™ Hybrid Riding Greens Mowers, PrecisionCut and E-Cut™Hybrid Fairway Mowers, the 8800A and 9009A TerrainCut Rough Mowers can mow the straightest lines of any rough mower in the industry today.

Traditional hydraulic cylinders have a rod on only one side of the cylinder. The cylinder on the 8800A and 9009A TerrainCut Rough Mower has one rod that goes through both sides of the cylinder. This equalizes volume and pressure on both sides of the cylinder packing, helping the operator make perfectly straight lines with little effort.

This system also equalizes the steering effort, meaning easy turns whether turning to the right or to the left.

The steering system is all about proven technology, not only with the cylinder itself, but also with the linkage system connecting the cylinder to the steering tires. The linkage system on the 8800A and 9009A TerrainCut Rough Mower has been used in John Deere Golf since 2008 and is common with the popular 5000 Series John Deere Utility Tractors, which already had proven reliability and durability with operators worldwide.

Low machine weight and tires sized for proper weight distribution, traction, and low ground pressure

The 9009A TerrainCut™ Rough Mower is the lowest weight at 27 in five-gang rough mower on the market. The lower weight helps reduce the overall foot print in fine turf conditions reducing compaction and turf stress. Along with the lower weight, the 9009A features 26.5 x12-12 turf tires for low footprint and maximum traction in the toughest conditions. This combination provides a strong traction package with low levels of ground compaction.