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.
- Wright Stander ZK 61 FX820 — commercial: daily paid use and high acreage; 61-inch deck; gas powered
- Altoz XP 610 SSi — commercial: daily paid use and high acreage; 61-inch deck; gas powered
What’s different? The 4 differences that matter most, from the published figures.
- Stander ZK 61 FX820 has a 7 Gauge deck; XP 610 SSi has a Aero Deck deck.
- Stander ZK 61 FX820 has a published top speed of 12.5 mph; XP 610 SSi has a published top speed of 11 mph, a 1.5 mph difference. Top speed is the maker's maximum in transport. Mowing speed is lower and depends on grass, terrain and the deck.
- Stander ZK 61 FX820 cuts from 1.5 in (38 mm) to 5.5 in (140 mm); XP 610 SSi cuts from 1.5 in (38 mm) to 5 in (127 mm). The cut-height range is the shortest and tallest cut the deck offers. Most lawns are kept well inside it.
- Stander ZK 61 FX820 holds 15.5 gal (58.7 L) of fuel; XP 610 SSi holds 14 gal (53 L) of fuel, a 1.5 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.
calculated figures and what isn’t comparable
Calculated by MowerFacts
- Stander ZK 61 FX820 works out to 6.2 acres/hour; XP 610 SSi works out to 5.4 acres/hour, a 0.7 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
- Weight: not published for XP 610 SSi.
- Warranty: not published for Stander ZK 61 FX820.
- Fuel Type: not published for XP 610 SSi.
- Deck Construction: not published for XP 610 SSi.
- Start Type: not published for XP 610 SSi.
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 | Stander ZK 61 FX820 Wright · Commercial |
XP 610 SSi Altoz · Commercial |
|---|---|---|
| List price | dealer quote | dealer quote |
| Engine | ||
| Power Source | gas | gas |
| Engine Make | Kawasaki | Kawasaki |
| Displacement | 50.2 ci (822 cc) | 50.2 ci (822 cc) |
| Engine Power | 34.5 hp | 34.5 hp |
| Cylinders | — | 2 |
| Engine Model | FX820 | FX EVO EFI |
| Fuel Type | Gasoline | — |
| Start Type | Electric | — |
| Deck | ||
| Cutting Width | 61 in (1549 mm) | 61 in (1549 mm) |
| Blades | 3 | 3 |
| Deck Material | 7 Gauge | Aero Deck |
| Deck Construction | Floating-side discharge | — |
| Deck Gauge | 7 | — |
| Anti-Scalp Rollers | — | Yes |
| Min Cut Height | 1.5 in (38 mm) | 1.5 in (38 mm) |
| Blade Tip Speed | — | 18501 ft/min (5639 m/min) |
| Max Cut Height | 5.5 in (140 mm) | 5 in (127 mm) |
| Drive | ||
| Transmission | Hydro | Hydrostatic |
| Ground Speed | 12.5 mph | 11 mph |
| Drive Tire Size | — | 24" |
| Reverse Speed | 7 mph | — |
| Dimensions | ||
| Weight | 1160 lbs (526.2 kg) | — |
| Fuel Capacity | 15.5 gal (58.7 L) | 14 gal (53 L) |
| Length | 70 in (1778 mm) | — |
| General | ||
| Warranty | — | 3 yr |
Where these models differ, explained
Stander ZK 61 FX820: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — kawasakienginesusa.com.
XP 610 SSi: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — altoz.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.