A commercial-quality, 37 hp (27.6 kW) gross at 3600 rpm, air-cooled engine with EFI powers the Z975M ZTrak™ Mower.

Engine features include:

• EFI with electronic throttle control
  • Electronically adjusts the supply of both fuel and air, responding instantaneously when the mower transitions from light to heavy mowing.
  • Unlike mechanical governors that droop under load, torque rises while maintaining constant full-throttle engine speed.
  • Productivity and cut quality are improved because the mower blades keep turning at full speed, delivering optimal cut quality and dispersion of clippings.
  • Immediate starting in hot or cold ambient temperatures or after long periods of seasonal storage
  • No choke linkage for the user to operate
  • Higher reliability with the elimination of vapor locking, misfiring, run-on, and after-bang
  • Automatic altitude compensation
  • Delivers fuel precisely for added efficiency
  • Reduces the potential for plug fouling
• V-twin design
  • Fast starts
  • Smooth operation
• Overhead valves
  • More horsepower and torque per cubic inch of displacement
  • Better fuel efficiency
• Air-cooled for minimum maintenance and maximum reliability
• Aluminum cylinder block
  • Effectively dissipates heat to extend engine life
  • Lightweight and strong construction
• Full-pressure lubrication with full-flow filter
  • Reduces engine wear by ensuring proper lubrication, even when operating on hillsides or uneven terrain
  • Filtered oil reduces risk of contamination for increased engine life for increased engine life
  • Oil cooler helps keep engine at optimum temperature
• Standard cleanout ports for easy access to remove debris collecting in cooling fins
• 20-amp alternator

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7-Iron PRO mower decks have demonstrated quality, performance, and durability. They deliver a high-quality cut in diverse conditions.

Key features of the 7-Iron PRO mower deck:

• Deck is forged from 7-gauge, 0.179-in. (4.6-mm) steel to minimize the number of welds and provide a smooth underside with fewer sharp corners for reduced material buildup.
• Significantly fewer welds on the deck shell to wear or break - it is forged from a single sheet of steel rather than multiple fabrications. An anti-skid step on the deck provides easy machine mounting.
• Extra reliability and long life with cast-iron blade spindle housings.
• Higher blade tip speed than many competitors - approximately 18,500 fpm (5,639 m/min) for more blade cuts per inch mowed.
• A deep-deck design of 5.5 in. (14 cm) delivers excellent airflow so material can be processed quickly and efficiently.
• The wider and higher discharge opening provides even clipping dispersal for an excellent finished appearance in all conditions.
• Quick-release belt covers do not require tools or the removal of a ring clip; just lift one corner of the cover and rotate it slightly to remove.
  • A hole in the deck tab is provided for use of an optional ring clip for extra security, if desired.
  • This makes it quick and easy for you to clean out trash that may collect around the spindle sheave.

• Deck has rectangular leading deck edge reinforcement and the rounded corners of the forged deck help distribute impact stress to reduce the potential of damage when the mower contacts trees, rocks, curbs, and other fixed obstacles.
• Dual-captured front and rear anti-scalp wheels provide deck flotation over even the toughest terrain.
• Three 1-in. (2.5-cm), cold-forged spindles are heat-treated for strength without bulk and are supported by ball bearings, providing reliability and performance; spindle housings are ribbed cast iron providing both excellent strength and heat dissipation.
• The trim edge of the deck is equipped with a bumper that provides great abrasion resistance to protect the machine and the property.
• The front edge is raised above the blade plane to allow even cutting of tall grass and is reinforced with a square bar for durability. The front baffle has been redesigned to better manage airflow and control clippings.
• Three spindle grease fittings are accessible from the top.
• Blade overlap is 1.6 in. (40.6 mm), nearly 0.79 in. (20 mm) greater than previous decks, to reduce striping between blades.
• Quick-change, cutting-height adjustment.

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There are two factory-installed seating options available for the M Series:

1. Deluxe comfort seat with armrests
2. Fully adjustable suspension seat with armrests

Both seats have the ComfortGlide fore/aft suspension system that gives superior ride comfort over uneven areas:

• Seat can travel up to 2 in. (50.8 mm) fore and aft to absorb bumps for a significant enhancement to ride comfort.
• Control lever provides the ability to easily lock out fore/aft suspension movement if desired.
• One lever has three functions:
  • Slide seat forward and back 3 in. (10.2 cm) to allow the operator the ability to choose the leg room needed
  • Activate ComfortGlide fore/aft seat suspension
  • Lock out ComfortGlide fore/aft seat suspension

The deluxe comfort seat with armrests is standard on all M Series models:

• Rubber springs are provided to increase ride comfort.
• A convenient seat latch makes it easy to lift the seat.
• The seat is factory installed.

A fully adjustable suspension seat with armrests option is available on the M and R Series:

• Adjustable back angle is provided for individual operator comfort.
• Adjustable lumbar support helps to suit the needs of the operator.
• A suspension seat control dial gives easy adjustment for operator weight and ride comfort.
• A convenient seat latch provides ease of lifting the seat.
• On Z900s ordered with the fully adjustable suspension seat with armrests option, it is factory installed.

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The Z900 ZTrak Mowers with EFI engines are equipped with upgraded electrical systems that power a modern display panel and speed trouble shooting.

The display panel assists in operating the mower and alerts to problems to reduce downtime and repair costs. The display panel includes:

• Hour meter
• Fuel level
• Engine speed
• System voltage
• Low engine oil-pressure indicator
• Starting interlock indicators for power take-off (PTO), operator presence, and park brake
• Bright caution and stop indicators to capture the operator's attention

The display panel’s diagnostics mode provides error codes, system voltage, and circuit continuity tests that can report switch functionality and circuit continuity in seconds, without tools.

When equipped with an optional JDLink™ M Modem - 4G, the upgraded electrical system provides additional data (fuel level, fuel consumption, and trouble codes) and enables Service Advisor Remote access to speed dealer diagnostics.

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