2024 John Deere R Series Zero Turn Mowers Z997R Diesel 72 in 7Iron™ PRO
Information
2024 John Deere R Series Zero Turn Mowers Z997R Diesel 72 in 7Iron™ PRO
Features may include:
Powerful diesel engine for increased performance
The Z997R is powered by a 3-cylinder, liquid-cooled diesel engine with a gross 37.4 hp (27.5 kW) that meets U.S. Environmental Protection Agency (EPA) Final Tier 4 emission standards. The engine achieves Final Tier 4 compliance by using a diesel oxidation catalyst with diesel particulate filter (DOC/DPF) system.
The three-cylinder diesel engine features low noise levels, superior fuel economy, and a high torque reserve that provides plenty of power and performance.
Key features of the engine include:
Economical, cast-in block cylinder design gives good cooling and long life.
Liquid-cooled design provides more consistent operating temperatures than air-cooled.
Direct fuel injection is provided.
Injects fuel directly on top of pistons for more efficient combustion
Develops more horsepower per gallon of fuel
Improves starting
Aluminum alloy pistons with built-in steel struts are lightweight to reduce connection rod bearing loads and provide good heat-transfer characteristics.
Design permits tighter tolerances and neutralizes expansion of the piston, thereby reducing blow-by fuel and noise from the piston slap
Higher top rings on the piston and a thinner head gasket greatly reduce the volume of unburned waste and increase combustion efficiency
Timing gears and injector drive gears utilize helical profile gears to help lower engine noise.
Gear teeth have a newly designed ''roll-off'' profile, giving almost no clash, no noise, and no backlash
Fuel filter with replaceable element is provided.
Full-pressure intake manifold provides quick starts in temperatures down to 0°F (-18°C).
Auto-bleed fuel system gives extra convenience.
No need to prime the system if the unit runs out of fuel; the system will self-prime the injection pump, lines and injectors, providing fast fuel recovery
Key start and shutoff eliminate fuel shut-off knob; electric solenoid shuts fuel supply off immediately when key is turned off.
See-through coolant recovery tank permits operator to check coolant level without removing radiator cap.
Sealed radiator compartment keeps trash and debris on outside of hood.
Dual-element, dry-type air cleaner with safety element and air service indicator is provided.
Dual-element design for added engine protection
Easy to service
Completely sealed for effective cleaning and 90 to 95 percent of dirt ejected before it reaches the paper element
Secondary safety element for additional filtering
Air-restriction indicator to let operator know when the filter needs servicing
Full-pressure lubrication with full-flow filter lengthens engine life.
Engine wear reduced by ensuring proper lubrication, even when operating on hillsides or uneven terrain
Oil filter helps keep oil clean for increased engine life
Automotive-type alternator (75 amp) provides plenty of charge to the battery.
Rear-mounted, covered radiator and fan keeps noise away from the operator and is easy to service.
Isolated engine mounting reduces engine vibration at operator's station for more comfortable operation.
Photos
Highlights
Albany, Georgia
2024
John Deere
R Series Zero Turn Mowers Z997R Diesel 72 in 7Iron™ PRO
Hydrostatic
Diesel or Biodiesel (up to B20)
Available
With chute down: 74, 86 in (188, 218 cm) | Rear discharge: 63.5, 75.8 in (161.3, 192.5 cm)
With ROPs up: 85 in (216 cm) | With ROPS down: 48 in (122 cm) | Of-cut range: Increments: 0.25 in (0.64 cm) / 1.5-5 in (3.8-12.7 cm)
Specifications
2024
John Deere
R Series Zero Turn Mowers
Z997R Diesel 72 in 7Iron™ PRO
Zero-Turn Mower
3TNV88C
PS: 37.4 hp (27.5 kW)
Gross at 3,000 rpm
Three
100.2 cu in (1,642 cc)
Full pressure
Liquid
Pre-cleaner Yes Heavy-duty canister, dry type with safety element and air-restriction indicator
Cold cranking amp: At 18 degrees C, 490 amp | Hour meter: Digital multi-function display
75 amp
Consumption: 1.1-1.9 U.S. gal./hr (4.2-7.2 L/hr)
Side discharge: Approximately 18,000 fpm | Blade tip speed: Approximately 16,500 fpm | Speed range: 0-18.5 km/h (0-11.5 mph) | Forward: 0-18.5 km/h (0-11.5 mph) | Reverse: 0-8 km/h (0-5 mph)
Full flow, replaceable, spin-on type | Drivetrain: Spin-on Type