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.
- Altoz TSX 561 i — commercial: daily paid use and high acreage; 61-inch deck; gas powered
- John Deere Z955M EFIZTrak Zero-Turn Mower — commercial: daily paid use and high acreage; 60-inch deck; gas powered
What’s different? The 5 differences that matter most, from the published figures.
- TSX 561 i holds 8.5 gal (32.2 L) of fuel; Z955M EFIZTrak Zero-Turn Mower holds 11.5 gal (43.5 L) of fuel, a 3 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.
- TSX 561 i has a published top speed of 10 mph; Z955M EFIZTrak Zero-Turn Mower has a published top speed of 12 mph, a 2 mph difference. Top speed is the maker's maximum in transport. Mowing speed is lower and depends on grass, terrain and the deck.
- TSX 561 i weighs 1,532 lbs (694.9 kg); Z955M EFIZTrak Zero-Turn Mower weighs 1,454 lbs (659.5 kg), a 78 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What TSX 561 i's weight means for a trailer ›
- TSX 561 i has a 29.5 hp engine; Z955M EFIZTrak Zero-Turn Mower has a 30.5 hp engine, a 1 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.
- TSX 561 i has a 52 ci (852 cc) engine; Z955M EFIZTrak Zero-Turn Mower has a 50.2 ci (822 cc) engine, a 1.8 ci difference. Displacement is the engine's size, not its output. A larger engine is not necessarily a more powerful one.
calculated figures and what isn’t comparable
Calculated by MowerFacts
- TSX 561 i works out to 4.9 acres/hour; Z955M EFIZTrak Zero-Turn Mower works out to 5.8 acres/hour, a 0.9 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
- Warranty: not published for Z955M EFIZTrak Zero-Turn Mower.
- Blades: not published for Z955M EFIZTrak Zero-Turn Mower.
- Engine Make: not published for Z955M EFIZTrak Zero-Turn Mower.
- Deck Material: not published for Z955M EFIZTrak Zero-Turn Mower.
- Deck Construction: not published for TSX 561 i.
- Cut height range: not published for Z955M EFIZTrak Zero-Turn Mower.
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 | TSX 561 i Altoz · Commercial |
Z955M EFIZTrak Zero-Turn Mower John Deere · Commercial |
|---|---|---|
| List price | dealer quote | dealer quote |
| Engine | ||
| Power Source | gas | gas |
| Engine Make | Kawasaki | — |
| Displacement | 52 ci (852 cc) | 50.2 ci (822 cc) |
| Engine Power | 29.5 hp | 30.5 hp |
| Cylinders | 2 | 2 |
| Engine Model | FX EFI | FX781V EVO EFI |
| Fuel Type | Gasoline | Gasoline |
| Deck | ||
| Cutting Width | 61 in (1549 mm) | 60 in (1524 mm) |
| Blades | 6 | — |
| Deck Material | Fabricated Steel HV All-Terrain Deck or Aero Deck | — |
| 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 |
| Anti-Scalp Rollers | No | — |
| Min Cut Height | 2.5 in (64 mm) | — |
| Blade Tip Speed | 17251 ft/min (5258 m/min) | — |
| Max Cut Height | 5.5 in (140 mm) | — |
| Drive | ||
| Transmission | Hydrostatic | Hydrostatic |
| Ground Speed | 10 mph | 12 mph |
| Dimensions | ||
| Weight | 1532 lbs (694.9 kg) | 1454 lbs (659.5 kg) |
| Fuel Capacity | 8.5 gal (32.2 L) | 11.5 gal (43.5 L) |
| Length | 75 in (1905 mm) | — |
| Height | 50 in (1270 mm) | — |
| General | ||
| Warranty | 3 yr | — |
Where these models differ, explained
TSX 561 i: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — altoz.com.
Z955M EFIZTrak Zero-Turn Mower: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — deere.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.