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 TFX 766 i — commercial: daily paid use and high acreage; 66-inch deck; gas powered
- Spartan Spartan KGZ-XD — commercial: daily paid use and high acreage; 61-inch deck; gas powered
What’s different? The 5 differences that matter most, from the published figures.
- TFX 766 i uses a Kawasaki engine; Spartan KGZ-XD uses a Vanguard 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.
- TFX 766 i has a published top speed of 11 mph; Spartan KGZ-XD has a published top speed of 15 mph, a 4 mph difference. Top speed is the maker's maximum in transport. Mowing speed is lower and depends on grass, terrain and the deck.
- TFX 766 i holds 14 gal (53 L) of fuel; Spartan KGZ-XD holds 17 gal (64.3 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.
- TFX 766 i cuts from 3 in (76 mm) to 7 in (178 mm); Spartan KGZ-XD cuts from 1.5 in (38 mm) to 4.8 in (121 mm). The cut-height range is the shortest and tallest cut the deck offers. Most lawns are kept well inside it.
- TFX 766 i has a 66 in (1,676 mm) deck; Spartan KGZ-XD has a 61 in (1,549 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
- TFX 766 i has a 38.5 hp engine; Spartan KGZ-XD has a 40 hp engine, a 1.5 hp difference.
Calculated by MowerFacts
- TFX 766 i works out to 5.9 acres/hour; Spartan KGZ-XD works out to 7.4 acres/hour, a 1.5 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.
- Blades: not published for Spartan KGZ-XD.
- Transmission: not published for Spartan KGZ-XD.
- Fuel Type: not published for Spartan KGZ-XD.
- Deck Material: not published for Spartan KGZ-XD.
- Deck Construction: not published for TFX 766 i.
- Price: TFX 766 i 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 | TFX 766 i Altoz · Commercial |
Spartan KGZ-XD Spartan · Commercial |
|---|---|---|
| List price | dealer quote | $18,099 |
| Engine | ||
| Power Source | gas | gas |
| Engine Make | Kawasaki | Vanguard |
| Displacement | 61 ci (999 cc) | 60.7 ci (994 cc) |
| Engine Power | 38.5 hp | 40 hp |
| Cylinders | 2 | — |
| Engine Model | FX EFI | — |
| Fuel Type | Gasoline | — |
| Deck | ||
| Cutting Width | 66 in (1676 mm) | 61 in (1549 mm) |
| Blades | 6 | — |
| Deck Material | Fabricated Steel All-Terrain Deck | — |
| Deck Construction | — | 6" Deep, Reinforced 7 Gauge Full-Floating Deck |
| Min Cut Height | 3 in (76 mm) | 1.5 in (38 mm) |
| Blade Tip Speed | 18501 ft/min (5639 m/min) | — |
| Max Cut Height | 7 in (178 mm) | 4.8 in (121 mm) |
| Drive | ||
| Transmission | Hydrostatic | — |
| Ground Speed | 11 mph | 15 mph |
| Drive Tire Size | — | 24x14-R12 Michelin Tweels� |
| Dimensions | ||
| Weight | — | 1310 lbs (594.2 kg) |
| Fuel Capacity | 14 gal (53 L) | 17 gal (64.3 L) |
| Length | 96 in (2438 mm) | 84 in (2134 mm) |
| Height | — | 75 in (1905 mm) |
| Commercial / Pro | ||
| Frame Construction | — | 1.5" by 3" Powder Coated Fusion-Bonded Solid Steel Bridge Frame |
| Seat Type | — | Supreme Custom Blackout Seat - Adjustable TecsPak Elastomer supports - 360 degree floating seat platform |
| General | ||
| Warranty | 3 yr | 3 yr |
Where these models differ, explained
TFX 766 i: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — altoz.com.
Spartan KGZ-XD: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — joinspartannation.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.