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 Autonomous ZK 61 61G8 — commercial: daily paid use and high acreage; 61-inch deck; gas powered
- Wright Stander B 36 FX600E — commercial: daily paid use and high acreage; 36-inch deck; gas powered
What’s different? The 5 differences that matter most, from the published figures.
- Autonomous ZK 61 61G8 has a 40 hp engine; Stander B 36 FX600E has a 19 hp engine, a 21 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.
- Autonomous ZK 61 61G8 has a 61 in (1,549 mm) deck; Stander B 36 FX600E has a 36 in (914 mm) deck, a 25 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 ›
- Autonomous ZK 61 61G8 holds 15.5 gal (58.7 L) of fuel; Stander B 36 FX600E holds 5 gal (18.9 L) of fuel, a 10.5 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.
- Autonomous ZK 61 61G8 uses a Briggs & Stratton engine; Stander B 36 FX600E uses a Kawasaki 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.
- Autonomous ZK 61 61G8 weighs 1,310 lbs (594.2 kg); Stander B 36 FX600E weighs 740 lbs (335.7 kg), a 570 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What Autonomous ZK 61 61G8's weight means for a trailer ›
5 more differences, calculated figures
Other verified differences
- Autonomous ZK 61 61G8 has a published top speed of 12.5 mph; Stander B 36 FX600E has a published top speed of 7 mph, a 5.5 mph difference.
- Autonomous ZK 61 61G8 has a 60.6 ci (993 cc) engine; Stander B 36 FX600E has a 36.8 ci (603 cc) engine, a 23.8 ci difference.
- Autonomous ZK 61 61G8 has a Floating-Mulch deck; Stander B 36 FX600E has a Floating-side discharge deck.
- Autonomous ZK 61 61G8 cuts from 1.5 in (38 mm) to 5.5 in (140 mm); Stander B 36 FX600E cuts from 2 in (51 mm) to 5 in (127 mm).
- Autonomous ZK 61 61G8 has 3 blades; Stander B 36 FX600E has 2 blades.
Calculated by MowerFacts
- Autonomous ZK 61 61G8 works out to 6.2 acres/hour; Stander B 36 FX600E works out to 2.0 acres/hour, a 4.1 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.
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 | Autonomous ZK 61 61G8 Wright · Commercial |
Stander B 36 FX600E Wright · Commercial |
|---|---|---|
| List price | dealer quote | dealer quote |
| Engine | ||
| Power Source | gas | gas |
| Engine Make | Briggs & Stratton | Kawasaki |
| Displacement | 60.6 ci (993 cc) | 36.8 ci (603 cc) |
| Engine Power | 40 hp | 19 hp |
| Engine Model | 61G8 | FX600E |
| Fuel Type | Gasoline | Gasoline |
| Start Type | Electric | Electric |
| Deck | ||
| Cutting Width | 61 in (1549 mm) | 36 in (914 mm) |
| Blades | 3 | 2 |
| Deck Material | 7 Gauge | 7 Gauge |
| Deck Construction | Floating-Mulch | Floating-side discharge |
| Deck Gauge | 7 | 11 |
| Min Cut Height | 1.5 in (38 mm) | 2 in (51 mm) |
| Max Cut Height | 5.5 in (140 mm) | 5 in (127 mm) |
| Drive | ||
| Transmission | Hydro | Hydro |
| Ground Speed | 12.5 mph | 7 mph |
| Reverse Speed | 7 mph | 3 mph |
| Dimensions | ||
| Weight | 1310 lbs (594.2 kg) | 740 lbs (335.7 kg) |
| Fuel Capacity | 15.5 gal (58.7 L) | 5 gal (18.9 L) |
| Length | 70 in (1778 mm) | 66.5 in (1689 mm) |
| Width | — | 37.5 in (952 mm) |
Where these models differ, explained
Autonomous ZK 61 61G8: Specs verified against the retailer listing on Jun 6, 2026 — barryspowerequipment.com.
Stander B 36 FX600E: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — wrightmfg.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.