Compare Mowers
These mowers are in different classes — showing only attributes they share.
List prices are the manufacturer’s published figures, re-checked daily; they exclude tax, freight and dealer setup.
A side-by-side reference of each model's stated specifications. MowerFacts doesn’t give opinions: where a published, spec-derived rule can separate machines we mark a Data Pick and show the rule; here, read the values and decide what fits your needs.
Best suited for
What each model is built for, from its duty class and key specs. This is a neutral reference — MowerFacts does not rank one model above another.
- Ferris IS600 Zero Turn Mower — commercial: daily paid use and high acreage; 48-inch deck; gas powered
- Wright Stander ZK 72 61G8 — commercial: daily paid use and high acreage; 72-inch deck; gas powered
What’s different? The 5 differences that matter most, from the published figures.
- IS600 Zero Turn Mower has a 18.5 hp engine; Stander ZK 72 61G8 has a 40 hp engine, a 21.5 hp difference. Published horsepower is the maker's rating at a stated engine speed. It is a different measure from displacement, and two engines of equal rating can pull differently.
- IS600 Zero Turn Mower holds 6 gal (22.7 L) of fuel; Stander ZK 72 61G8 holds 15.5 gal (58.7 L) of fuel, a 9.5 gal difference. Tank size bounds how long a machine runs between stops. Consumption varies with engine, load and speed, so hours per tank are not fixed.
- IS600 Zero Turn Mower uses a Kawasaki® FS600V engine; Stander ZK 72 61G8 uses a Briggs & Stratton engine. The engine maker builds the engine; the mower maker chooses the model, rating and fit, so the badge alone does not settle output or longevity.
- IS600 Zero Turn Mower has a 48 in (1,219 mm) deck; Stander ZK 72 61G8 has a 72 in (1,829 mm) deck, a 24 in difference. Deck width sets how much grass each pass covers. Mowing time also depends on ground speed, turns and obstacles, so a wider deck alone does not fix the job's length. Time both decks on your own lawn ›
- IS600 Zero Turn Mower has a 36.8 ci (603 cc) engine; Stander ZK 72 61G8 has a 60.6 ci (993 cc) engine, a 23.8 ci difference. Displacement is the engine's size, not its output. A larger engine is not necessarily a more powerful one.
4 more differences, calculated figures and what isn’t comparable
Other verified differences
- IS600 Zero Turn Mower weighs 942 lbs (427.3 kg); Stander ZK 72 61G8 weighs 1,260 lbs (571.5 kg), a 318 lbs difference.
- IS600 Zero Turn Mower has a 10-gauge, Fabricated deck; Stander ZK 72 61G8 has a Floating-side discharge deck.
- IS600 Zero Turn Mower has a published top speed of 10 mph; Stander ZK 72 61G8 has a published top speed of 12.5 mph, a 2.5 mph difference.
- IS600 Zero Turn Mower cuts from 1.5 in (38 mm) to 4.5 in (114 mm); Stander ZK 72 61G8 cuts from 1.5 in (38 mm) to 5.5 in (140 mm).
Calculated by MowerFacts
- IS600 Zero Turn Mower works out to 3.9 acres/hour; Stander ZK 72 61G8 works out to 7.3 acres/hour, a 3.4 acres/hour difference. Calculated by MowerFacts from deck width and the published top speed at 80% efficiency; it is not a manufacturer figure, and real mowing is slower.
Not comparable
- Price: Stander ZK 72 61G8 is dealer quote only.
Verified means each manufacturer publishes the figure. A bigger number is only a bigger number; nothing here says which machine is better. The full specification table is below.
Which is faster on your property? › Measure your lawn once and MowerFacts times all 2 against it.
| Spec | IS600 Zero Turn Mower Ferris · Zero-Turn |
Stander ZK 72 61G8 Wright · Commercial |
|---|---|---|
| List price | $9,294 | dealer quote |
| Engine | ||
| Power Source | gas | gas |
| Displacement | 36.8 ci (603 cc) | 60.6 ci (993 cc) |
| Engine Power | 18.5 hp | 40 hp |
| Engine Make | Kawasaki® FS600V | Briggs & Stratton |
| Fuel Type | Gas | Gasoline |
| Start Type | Electric | Electric |
| Deck | ||
| Cutting Width | 48 in (1219 mm) | 72 in (1829 mm) |
| Min Cut Height | 1.5 in (38 mm) | 1.5 in (38 mm) |
| Max Cut Height | 4.5 in (114 mm) | 5.5 in (140 mm) |
| Deck Construction | 10-gauge, Fabricated | Floating-side discharge |
| Drive | ||
| Transmission | Dual commercial Hydro-Gear® ZT-3200® transaxles with 7" cooling fans | Hydro |
| Ground Speed | 10 mph | 12.5 mph |
| Reverse Speed | 5 mph | 7 mph |
| Dimensions | ||
| Weight | 942 lbs (427.3 kg) | 1260 lbs (571.5 kg) |
| Fuel Capacity | 6 gal (22.7 L) | 15.5 gal (58.7 L) |
| Length | 80 in (2032 mm) | 72 in (1829 mm) |
Where these models differ, explained
IS600 Zero Turn Mower: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — ferrismowers.com.
Stander ZK 72 61G8: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — wrightmfg.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.