Compare Mowers
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.
- Grasshopper 623T — commercial: daily paid use and high acreage; 48-inch deck; gas powered
- Kubota Z723KH-3-48 — commercial: daily paid use and high acreage; 48-inch deck; gas powered
What’s different? The 5 differences that matter most, from the published figures.
- 623T holds 4 gal (15.1 L) of fuel; Z723KH-3-48 holds 11.6 gal (43.9 L) of fuel, a 7.6 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.
- 623T uses a Rehlko engine; Z723KH-3-48 uses a Kohler Command Pro CV682 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.
- 623T has a T-Drive Transmission transmission; Z723KH-3-48 has a Parker HTG14 transmission. The transmission grade tracks duty rating and speed. Grade names are each maker's own and are not comparable across brands.
- 623T has a published top speed of 8.5 mph; Z723KH-3-48 has a published top speed of 11.2 mph, a 2.7 mph difference. Top speed is the maker's maximum in transport. Mowing speed is lower and depends on grass, terrain and the deck.
- 623T weighs 1,040 lbs (471.7 kg); Z723KH-3-48 weighs 1,212 lbs (549.8 kg), a 172 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What 623T's weight means for a trailer ›
calculated figures and what isn’t comparable
Calculated by MowerFacts
- 623T works out to 3.3 acres/hour; Z723KH-3-48 works out to 4.3 acres/hour, a 1.0 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
- Engine Power: not published for 623T.
- Blades: not published for 623T.
- Drive System: not published for 623T.
- Cut height range: not published for 623T.
- Price: Z723KH-3-48 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 | 623T Grasshopper · Zero-Turn |
Z723KH-3-48 Kubota · Zero-Turn |
|---|---|---|
| List price | $15,870 | dealer quote |
| Engine | ||
| Power Source | gas | gas |
| Displacement | 42.4 ci (694 cc) | 42.4 ci (694 cc) |
| Engine Power | — | 22.5 hp |
| Engine Make | Rehlko | Kohler Command Pro CV682 |
| Fuel Type | Gasoline | Gasoline |
| Cylinders | 2 | 2 |
| Deck | ||
| Cutting Width | 48 in (1219 mm) | 48 in (1219 mm) |
| Blades | — | 3 |
| Min Cut Height | — | 1 in (25 mm) |
| Max Cut Height | — | 5 in (127 mm) |
| Deck Gauge | — | 8 |
| Blade Tip Speed | — | 18599 ft/min (5669 m/min) |
| Drive | ||
| Transmission | T-Drive Transmission | Parker HTG14 |
| Ground Speed | 8.5 mph | 11.2 mph |
| Reverse Speed | 5.5 mph | 5.6 mph |
| Drive System | — | Belt |
| Dimensions | ||
| Weight | 1040 lbs (471.7 kg) | 1212 lbs (549.8 kg) |
| Fuel Capacity | 4 gal (15.1 L) | 11.6 gal (43.9 L) |
| Length | 99 in (2515 mm) | 83.9 in (2131 mm) |
| Width | 47 in (1194 mm) | 61.3 in (1557 mm) |
| Height | — | 70.1 in (1780 mm) |
Where these models differ, explained
623T: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — grasshoppermower.com.
Z723KH-3-48: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — allmachines.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.