John Deere Z998R DieselZTrak™ Zero-Turn Mower
Commercial mower · Model Z998R · Commercial-duty · Diesel
John Deere Australia doesn’t publish a recommended retail price for this model online — it’s dealer quote only. The John Deere Australia product page is the place to start.
Sold in Australia — listed on deere.com.au, checked 20 Oct 2026. Listed there as Z998R Diesel (Z998R). Also sold in the United States: US specs and list price.
- Weighs 2,925 lb
- On a 6×12 trailer 3,825 lb towed, tandem-axle 7,000 lb
- Mows an acre in 9 min (6 at top speed) How long for your yard? ›
- How these are worked out ›
The John Deere Z998R DieselZTrak Zero-Turn Mower is a commercial-grade commercial mower, built for daily commercial mowing, with a 100-inch deck and a 1568cc engine making 43.4 hp. It weighs 2925 lb (1326.8 kg).
At a glance
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Engine
| Power Source | diesel |
|---|---|
| Displacement | 95.7 ci (1568 cc) |
| Engine Power | 43.4 hp |
| Cylinders | 3 |
| Engine Model | 3TNV86C Turbo |
| Fuel Type | Diesel or Biodiesel (up to B20) |
Deck
| Cutting Width | 100 in (2540 mm) |
|---|---|
| Deck Construction | FastBack™ PRO: 7-gauge, 0.179-in. (4.6-mm) fabricated steel |
Drive
| Transmission | Hydrostatic |
|---|---|
| Ground Speed | 11.5 mph |
Dimensions
| Weight | 2925 lbs (1326.8 kg) |
|---|---|
| Fuel Capacity | 12 gal (45.4 L) |
Similar models
Other commercial mowers with comparable specs — including other brands — that buyers cross-shop with the Z998R DieselZTrak Zero-Turn Mower.
Specs verified against the manufacturer spec sheet on Jun 6, 2026 — deere.com.
What the parts on this spec sheet mean
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Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.
What the specs work out to
Figures MowerFacts computes from John Deere’s own numbers — not published by the manufacturer.
Mowing time
- ¼ acre2 min 2 min
- ½ acre5 min 3 min
- 1 acre9 min 6 min
- 2 acres18 min 13 min
- 5 acres46 min 32 min
- 10 acres1 h 32 min 1 h 5 min
About 9 min per acre at 6.51 acres/hour, mowing at 8.0 mph. The second figure is at the published 11.5 mph top speed (9.29 acres/hour) — faster than anyone really mows. About 78.1 acres per tank.
Weight & hauling
- Machine weight2,925 lb
- + 6×12 trailer900 lb
- Towed weight3,825 lb
- single-axle 3,500 lbOver by 325 lb
- tandem-axle 7,000 lbCarries it, 3,175 lb spare
Needs a tandem-axle 7,000 lb trailer and a vehicle rated to tow at least 3,825 lb.
Gate & trailer fit
- 32 in gateToo wide
- 36 in gateToo wide
- 48 in gateToo wide
Needs at least 106 in of clearance (estimated).
Power & run time
- Power per deck inch0.434 hp/in
- Run time per tank~12.0 h
Mowing times assume 6.51 acres/hour: deck width x 8.0 mph at 80% efficiency, which allows for overlap, turns and trimming. 8.0 mph is 70% of the 11.5 mph top speed John Deere publishes - almost nobody mows flat out. The "at top speed" figure is the same sum at 11.5 mph, shown so you can see it.
Fit uses the deck width plus 6 in for the discharge chute, because John Deere doesn't publish an overall width — measure before buying if a gate is tight.
Towed weight adds a 900 lb allowance for a 6x12 open utility trailer to John Deere's published machine weight. Your trailer's own weight is on its VIN plate. Tongue weight, axle placement and your vehicle's tow rating are still yours to check — this is the load, not a loading plan.
Run time assumes a typical 1 gal/hour burn at working load; real consumption varies with engine, load and cut.
Source: John Deere (manufacturer) · archived copy