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
- Altoz TFX 766 i — commercial: daily paid use and high acreage; 66-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; TFX 766 i holds 14 gal (53 L) of fuel, a 5.5 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.
- TSX 561 i has a 29.5 hp engine; TFX 766 i has a 38.5 hp engine, a 9 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 cuts from 2.5 in (64 mm) to 5.5 in (140 mm); TFX 766 i cuts from 3 in (76 mm) to 7 in (178 mm). The cut-height range is the shortest and tallest cut the deck offers. Most lawns are kept well inside it.
- TSX 561 i has a 52 ci (852 cc) engine; TFX 766 i has a 61 ci (999 cc) engine, a 9 ci difference. Displacement is the engine's size, not its output. A larger engine is not necessarily a more powerful one.
- TSX 561 i has a 61 in (1,549 mm) deck; TFX 766 i has a 66 in (1,676 mm) deck, a 5 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 ›
1 more difference, calculated figures and what isn’t comparable
Other verified differences
- TSX 561 i has a published top speed of 10 mph; TFX 766 i has a published top speed of 11 mph, a 1 mph difference.
Calculated by MowerFacts
- TSX 561 i works out to 4.9 acres/hour; TFX 766 i works out to 5.9 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
- Weight: not published for TFX 766 i.
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 |
TFX 766 i Altoz · Commercial |
|---|---|---|
| List price | dealer quote | dealer quote |
| Engine | ||
| Power Source | gas | gas |
| Engine Make | Kawasaki | Kawasaki |
| Displacement | 52 ci (852 cc) | 61 ci (999 cc) |
| Engine Power | 29.5 hp | 38.5 hp |
| Cylinders | 2 | 2 |
| Engine Model | FX EFI | FX EFI |
| Fuel Type | Gasoline | Gasoline |
| Deck | ||
| Cutting Width | 61 in (1549 mm) | 66 in (1676 mm) |
| Blades | 6 | 6 |
| Deck Material | Fabricated Steel HV All-Terrain Deck or Aero Deck | Fabricated Steel All-Terrain Deck |
| Anti-Scalp Rollers | No | — |
| Min Cut Height | 2.5 in (64 mm) | 3 in (76 mm) |
| Blade Tip Speed | 17251 ft/min (5258 m/min) | 18501 ft/min (5639 m/min) |
| Max Cut Height | 5.5 in (140 mm) | 7 in (178 mm) |
| Drive | ||
| Transmission | Hydrostatic | Hydrostatic |
| Ground Speed | 10 mph | 11 mph |
| Dimensions | ||
| Weight | 1532 lbs (694.9 kg) | — |
| Fuel Capacity | 8.5 gal (32.2 L) | 14 gal (53 L) |
| Length | 75 in (1905 mm) | 96 in (2438 mm) |
| Height | 50 in (1270 mm) | — |
| General | ||
| Warranty | 3 yr | 3 yr |
Where these models differ, explained
TSX 561 i: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — altoz.com.
TFX 766 i: 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.