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Gravely ZT 42 KAWASAKI

Zero-Turn mower · Model 915289 · Commercial-duty · Gas

$3,899 Gravely list price

Checked 23 Oct 2026 on the Gravely product page. Tracking since 17 Sep 2026; no change recorded yet.

Manufacturer list price only — it excludes tax, freight, dealer setup and any local discount, and dealers set the final price.

The Gravely ZT 42 KAWASAKI is a commercial-grade gas zero-turn mower, built for daily commercial mowing, with a 42-inch deck and a 603cc engine making 18 hp. It weighs 498 lb (225.9 kg).

At a glance

Power Source
gas
Cutting Width
42 in (1067 mm)
Displacement
36.8 ci (603 cc)
Engine Power
18 hp
Ground Speed
6 mph
Weight
498 lbs (225.9 kg)
Compare this mower: Pick another Gravely zero-turn or pick from every zero-turn mower   or quick compare: vs COMPACT-PRO 34 KAWASAKI · vs HD PRO 48 KAWASAKI FT · vs HD PRO 52 KAWASAKI FT
Compare similar mowers See how this mower compares with machines of a similar size and purpose.
  • Bad Boy Mowers MZ Rambler
    Deck 42 in (1067 mm) · Briggs, 19 hp, 540 cc
    Fuel capacity 5 gal (18.9 L) (this model: 2 gal (7.6 L))Weight 633 lbs (287 kg) (this model: 498 lbs (225.9 kg))
    Why: Same class: zero-turn · Same 42 in deck · Gas engine, like this model · Commercial-duty, like this model · 19 hp (this model: 18 hp) · By Bad Boy Mowers, a different maker
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  • Ferris 300R Zero Turn Mower (42 in / 5902205)
    Deck 42 in (1067 mm) · Kawasaki®, 21.5 hp, 726 cc
    Fuel capacity 3 gal (11.4 L) (this model: 2 gal (7.6 L))Ground speed 8 mph (this model: 6 mph)
    Why: Same class: zero-turn · Same 42 in deck · Gas engine, like this model · Commercial-duty, like this model · 21.5 hp (this model: 18 hp) · By Ferris, a different maker
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  • Exmark Exmark Quest E-Series Mower
    Deck 42 in (1067 mm) · Exmark, 22 hp, 452 cc
    Fuel capacity 3 gal (11.4 L) (this model: 2 gal (7.6 L))Displacement 27.6 ci (452 cc) (this model: 36.8 ci (603 cc))
    Why: Same class: zero-turn · Same 42 in deck · Gas engine, like this model · Commercial-duty, like this model · 22 hp (this model: 18 hp) · By Exmark, a different maker
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  • Scag SLS
    Deck 42 in (1067 mm) · Briggs & Stratton® PXi Series™, 20 hp
    Fuel capacity 3.5 gal (13.2 L) (this model: 2 gal (7.6 L))Ground speed 7 mph (this model: 6 mph)
    Why: Same class: zero-turn · Same 42 in deck · Gas engine, like this model · Commercial-duty, like this model · 20 hp (this model: 18 hp) · By Scag, a different maker
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  • Spartan Spartan Shield
    Deck 42 in (1067 mm) · Spartan, 22 hp
    Fuel capacity 5 gal (18.9 L) (this model: 2 gal (7.6 L))Weight 682 lbs (309.4 kg) (this model: 498 lbs (225.9 kg))
    Why: Same class: zero-turn · Same 42 in deck · Gas engine, like this model · Commercial-duty, like this model · 22 hp (this model: 18 hp) · By Spartan, a different maker
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Chosen by stated rules, not opinion: same class, a deck within 6 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

Gravely ZT 42 KAWASAKI engine specifications
Power Sourcegas
Displacement36.8 ci (603 cc)
Engine Power18 hp
Engine MakeKawasaki®
Engine ModelFR600V
Fuel TypeGas

Deck

Gravely ZT 42 KAWASAKI deck specifications
Cutting Width42 in (1067 mm)
Min Cut Height1.5 in (38 mm)
Max Cut Height4.5 in (114 mm)
Deck Material11 ga
Deck ConstructionMach One
Deck Gauge11
DischargeSide

Drive

Gravely ZT 42 KAWASAKI drive specifications
Ground Speed6 mph
Drive SystemHydro-Gear® Serviceable EZT® Transaxles
Reverse Speed3 mph

Dimensions

Gravely ZT 42 KAWASAKI dimensions specifications
Weight498 lbs (225.9 kg)
Fuel Capacity2 gal (7.6 L)
Length68 in (1727 mm)
Width46.3 in (1175 mm)

Professional use

How the ZT 42 KAWASAKI fits commercial and high-acreage work, from the specs we have. Duty class: Commercial.

Acres/hr (80%)
1.43
Acres/hr (100%)
2.55
Deck width
42 in
Ground speed
6 mph

Productivity computed from deck width and ground speed. Compare on the calculator ›

Gravely ZT 42 KAWASAKI professional and productivity specifications
Deck width42 in
Engine makeKawasaki®
Engine displacement603 cc
Engine power18 hp
Ground speed6 mph
Cut-height range38 mm – 114 mm
Fuel capacity7.6 L
Weight225.9 kg
Deck constructionMach One
Deck gauge11 ga

Gravely doesn’t publish 9 of these for the ZT 42 KAWASAKI: transmission, drive type, warranty, commercial warranty, spindle type, frame construction, anti-scalp rollers, drive tire size, seat type.

See the Gravely commercial pro hub › · Professional buying hub ›

Similar models

Other zero-turn mowers with comparable specs — including other brands — that buyers cross-shop with the ZT 42 KAWASAKI.

POWER+ 42 in Z6 Zero Turn Mower with e-STEER Technology EGO · 42 in (1067 mm)
POWER+ 42 in Z6 Zero Turn Riding Mower with Six 6.0 Ah… EGO · 42 in (1067 mm)
ZR3 80V HP Brushless 42 in Zero Turn Riding Mower Kit Ryobi · 42 in (1067 mm)
80V 42 in Cordless Battery CrossoverZ Zero Turn Lawn Mower Greenworks · 42 in (1067 mm)
Z370RS ElectricZTrak Mower John Deere · 42 in (1067 mm)
60V MAX 42 in. TimeCutter Zero Turn Mower Toro · 42 in (1067 mm)

Specs verified against the retailer listing on Jun 6, 2026 — ellingtonagway.com.

See every mower with a Kawasaki engine ›

What the parts on this spec sheet mean

Other Gravely ZT models › 1 more in this range: ZT 34 KAWASAKI

See all Gravely mowers and specs ›

Spot a wrong spec? Suggest a correction.

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 Gravely’s own numbers — not published by the manufacturer.

Mowing time

  • ¼ acre11 min 7 min
  • ½ acre21 min 15 min
  • 1 acre42 min 29 min
  • 2 acres1 h 24 min 59 min
  • 5 acres3 h 30 min 2 h 27 min

About 42 min per acre at 1.43 acres/hour, mowing at 4.2 mph. The second figure is at the published 6.0 mph top speed (2.04 acres/hour) — faster than anyone really mows. About 2.9 acres per tank.

Weight & hauling

  • Machine weight498 lb
  • + 6×12 trailer900 lb
  • Towed weight1,398 lb
  • single-axle 3,500 lbCarries it, 2,102 lb spare
  • tandem-axle 7,000 lbCarries it, 5,602 lb spare

Needs a single-axle 3,500 lb trailer and a vehicle rated to tow at least 1,398 lb.

Gate & trailer fit

  • 32 in gateToo wide
  • 36 in gateToo wide
  • 48 in gateFits

Needs at least 47 in of clearance.

Power & run time

  • Power per deck inch0.428 hp/in
  • Run time per tank~2.0 h

Mowing times assume 1.43 acres/hour: deck width x 4.2 mph at 80% efficiency, which allows for overlap, turns and trimming. 4.2 mph is 70% of the 6.0 mph top speed Gravely publishes - almost nobody mows flat out. The "at top speed" figure is the same sum at 6.0 mph, shown so you can see it.

Fit uses Gravely's published overall width.

Towed weight adds a 900 lb allowance for a 6x12 open utility trailer to Gravely'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.

Gravely ZT 42 KAWASAKI questions

What size deck is on the Gravely ZT 42 KAWASAKI?

The Gravely ZT 42 KAWASAKI has a 42-inch (1067 mm) cutting deck with 11 ga construction.

What engine is in the Gravely ZT 42 KAWASAKI?

The Gravely ZT 42 KAWASAKI is powered by a Kawasaki® FR600V, 603 cc, 18 hp. Horsepower is the manufacturer's own rating.

How much does the Gravely ZT 42 KAWASAKI weigh?

The Gravely ZT 42 KAWASAKI weighs 498 lb (225.9 kg) as specified by Gravely.

What size trailer do I need for the Gravely ZT 42 KAWASAKI?

At 498 lb, the Gravely ZT 42 KAWASAKI on a typical 6x12 open utility trailer (about 900 lb empty) is roughly 1,398 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 1,398 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 Gravely ZT 42 KAWASAKI?

Top ground speed is 6 mph. With its 42-inch deck that works out to about 2.04 acres per hour at 80% efficiency — allowing for overlap, turns and trimming.

How long does the Gravely ZT 42 KAWASAKI take to mow an acre?

About 29 min per acre, from its 42-inch deck at 6 mph and 80% efficiency — roughly 2.04 acres an hour, so five acres is about 2 h 27 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 Gravely ZT 42 KAWASAKI?

The Gravely ZT 42 KAWASAKI holds 2 gal (7.6 L) of fuel.

How much does the Gravely ZT 42 KAWASAKI cost?

Gravely's published list price is $3,899, checked 23 October 2026. That excludes tax, freight, dealer setup and any local discount — dealers set the final price.

What is the Gravely ZT 42 KAWASAKI built for?

Commercial-duty zero-turn mower. Built for daily, paid commercial use.

Source: Gravely (manufacturer) · archived copy

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