John Deere Z994R DieselZTrak™ Zero-Turn Mower
Commercial mower · Model Z994R · Commercial-duty · Diesel
John Deere doesn’t publish a list price for this model — it’s dealer quote only. The John Deere product page is the place to start.
- Weighs 1,810 lb
- On a 6×12 trailer 2,710 lb towed, single-axle 3,500 lb
- Mows an acre in 13 min (9 at top speed) How long for your yard? ›
- How these are worked out ›
The John Deere Z994R DieselZTrak Zero-Turn Mower is a commercial-grade commercial mower, built for daily commercial mowing, with a 72-inch deck and a 1266.7cc engine making 24.7 hp. It weighs 1810 lb (821 kg).
At a glance
Compare similar mowers See how this mower compares with machines of a similar size and purpose.
Chosen by stated rules, not opinion: same class, a deck within 8 in of this one, the same kind of power and a compatible duty class, then the closest power, weight and price, with other makers preferred. Figures are the manufacturers’ published ones; nothing is estimated.
Engine
| Power Source | diesel |
|---|---|
| Displacement | 77.3 ci (1266.7 cc) |
| Engine Power | 24.7 hp |
| Cylinders | 3 |
| Engine Model | 3TNV80F |
| Fuel Type | Diesel or Biodiesel (up to B20) |
Deck
| Cutting Width | 72 in (1829 mm) |
|---|---|
| Deck Construction | 7-Iron™ PRO: 7-gauge, 0.179-in. (4.6-mm) one-piece forged steel FastBack™ PRO: 7-gauge, 0.179-in. (4.6-mm) fabricated steel |
Drive
| Transmission | Dual hydrostatic wheel drive TuffTorq heavy-duty ground drive with cross porting for improved cooling |
|---|---|
| Ground Speed | 11.4 mph |
Dimensions
| Weight | 1810 lbs (821 kg) |
|---|---|
| Fuel Capacity | 11.5 gal (43.5 L) |
Professional use
How the Z994R DieselZTrak Zero-Turn Mower fits commercial and high-acreage work, from the specs we have. Duty class: Commercial.
Productivity computed from deck width and ground speed. Compare on the calculator ›
| Deck width | 72 in |
|---|---|
| Engine displacement | 1267 cc |
| Engine power | 24.7 hp |
| Transmission | Dual hydrostatic wheel drive TuffTorq heavy-duty ground drive with cross porting for improved cooling |
| Ground speed | 11.4 mph |
| Fuel capacity | 43.5 L |
| Weight | 821 kg |
| Deck construction | 7-Iron™ PRO: 7-gauge, 0.179-in. (4.6-mm) one-piece forged steel FastBack™ PRO: 7-gauge, 0.179-in. (4.6-mm) fabricated steel |
John Deere doesn’t publish 11 of these for the Z994R DieselZTrak Zero-Turn Mower: engine make, drive type, cut-height range, warranty, commercial warranty, deck gauge, spindle type, frame construction, anti-scalp rollers, drive tire size, seat type.
See the John Deere commercial pro hub › · Professional buying hub ›
Similar models
Other commercial mowers with comparable specs — including other brands — that buyers cross-shop with the Z994R 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 acre3 min 2 min
- ½ acre6 min 5 min
- 1 acre13 min 9 min
- 2 acres26 min 18 min
- 5 acres1 h 5 min 45 min
- 10 acres2 h 9 min 1 h 30 min
About 13 min per acre at 4.64 acres/hour, mowing at 8.0 mph. The second figure is at the published 11.4 mph top speed (6.63 acres/hour) — faster than anyone really mows. About 53.4 acres per tank.
Weight & hauling
- Machine weight1,810 lb
- + 6×12 trailer900 lb
- Towed weight2,710 lb
- single-axle 3,500 lbCarries it, 790 lb spare
- tandem-axle 7,000 lbCarries it, 4,290 lb spare
Needs a single-axle 3,500 lb trailer and a vehicle rated to tow at least 2,710 lb.
Gate & trailer fit
- 32 in gateToo wide
- 36 in gateToo wide
- 48 in gateToo wide
Needs at least 79 in of clearance (estimated).
Power & run time
- Power per deck inch0.343 hp/in
- Run time per tank~11.5 h
Mowing times assume 4.64 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 11.4 mph top speed John Deere publishes - almost nobody mows flat out. The "at top speed" figure is the same sum at 11.4 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.
John Deere Z994R DieselZTrak Zero-Turn Mower questions
What size deck is on the John Deere Z994R DieselZTrak Zero-Turn Mower?
The John Deere Z994R DieselZTrak Zero-Turn Mower has a 72-inch (1829 mm) cutting deck.
What engine is in the John Deere Z994R DieselZTrak Zero-Turn Mower?
The John Deere Z994R DieselZTrak Zero-Turn Mower is powered by 1267 cc, 24.7 hp. Horsepower is the manufacturer's own rating.
How much does the John Deere Z994R DieselZTrak Zero-Turn Mower weigh?
The John Deere Z994R DieselZTrak Zero-Turn Mower weighs 1,810 lb (821 kg) as specified by John Deere.
What size trailer do I need for the John Deere Z994R DieselZTrak Zero-Turn Mower?
At 1,810 lb, the John Deere Z994R DieselZTrak Zero-Turn Mower on a typical 6x12 open utility trailer (about 900 lb empty) is roughly 2,710 lb of towed weight. That is within a single-axle 3,500 lb trailer, and your tow vehicle needs to be rated for at least 2,710 lb. Tongue weight, axle placement and your own trailer's empty weight still have to be checked — this is the arithmetic, not a loading plan.
How fast is the John Deere Z994R DieselZTrak Zero-Turn Mower?
Top ground speed is 11.4 mph. With its 72-inch deck that works out to about 6.63 acres per hour at 80% efficiency — allowing for overlap, turns and trimming.
How long does the John Deere Z994R DieselZTrak Zero-Turn Mower take to mow an acre?
About 9 min per acre, from its 72-inch deck at 11.4 mph and 80% efficiency — roughly 6.63 acres an hour, so five acres is about 45 min. Rough or obstacle-heavy ground takes longer; this is deck width times ground speed, not a timed test.
How big is the fuel tank on the John Deere Z994R DieselZTrak Zero-Turn Mower?
The John Deere Z994R DieselZTrak Zero-Turn Mower holds 11.5 gal (43.5 L) of fuel.
How much does the John Deere Z994R DieselZTrak Zero-Turn Mower cost?
John Deere doesn't publish a list price for the John Deere Z994R DieselZTrak Zero-Turn Mower — it's sold on a dealer quote. MowerFacts records prices only where the manufacturer publishes them.
What is the John Deere Z994R DieselZTrak Zero-Turn Mower built for?
Commercial-duty commercial mower. Built for daily, paid commercial use.
Source: John Deere (manufacturer) · archived copy