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.
- Scag SWZ Hydro-Drive — commercial: daily paid use and high acreage; 36-inch deck; gas powered
- Ferris FW25 Walk Behind Mower (36 in / 5901886) — 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.
- SWZ Hydro-Drive uses a Kawasaki® FS Series engine; FW25 Walk Behind Mower (36 in / 5901886) uses a Kawasaki® FS600V 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.
- SWZ Hydro-Drive has a 14 hp engine; FW25 Walk Behind Mower (36 in / 5901886) has a 18.5 hp engine, a 4.5 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.
- SWZ Hydro-Drive weighs 515 lbs (233.6 kg); FW25 Walk Behind Mower (36 in / 5901886) weighs 632 lbs (286.7 kg), a 117 lbs difference. Operating weight bears on trailer payload, ramps and soft turf. On its own it says nothing about build quality. What SWZ Hydro-Drive's weight means for a trailer ›
- SWZ Hydro-Drive has a published top speed of 7.4 mph; FW25 Walk Behind Mower (36 in / 5901886) has a published top speed of 6 mph, a 1.4 mph difference. Top speed is the maker's maximum in transport. Mowing speed is lower and depends on grass, terrain and the deck.
- SWZ Hydro-Drive holds 5.5 gal (20.8 L) of fuel; FW25 Walk Behind Mower (36 in / 5901886) holds 5 gal (18.9 L) of fuel, a 0.5 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.
1 more difference, calculated figures and what isn’t comparable
Other verified differences
- SWZ Hydro-Drive cuts from 1.7 in (44 mm) to 4.5 in (114 mm); FW25 Walk Behind Mower (36 in / 5901886) cuts from 1.5 in (38 mm) to 4.5 in (114 mm).
Calculated by MowerFacts
- SWZ Hydro-Drive works out to 2.2 acres/hour; FW25 Walk Behind Mower (36 in / 5901886) works out to 1.7 acres/hour, a 0.4 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
- Displacement: not published for SWZ Hydro-Drive.
- Warranty: not published for SWZ Hydro-Drive.
- Transmission: not published for SWZ Hydro-Drive.
- Fuel Type: not published for SWZ Hydro-Drive.
- Deck Material: not published for SWZ Hydro-Drive.
- Deck Construction: not published for FW25 Walk Behind Mower (36 in / 5901886).
- Drive System: not published for FW25 Walk Behind Mower (36 in / 5901886).
- Start Type: not published for SWZ Hydro-Drive.
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 | SWZ Hydro-Drive Scag · Push / Walk-Behind |
FW25 Walk Behind Mower (36 in / 5901886) Ferris · Push / Walk-Behind |
|---|---|---|
| List price | $8,449–$11,329 | $8,304 |
| Engine | ||
| Power Source | gas | gas |
| Displacement | — | 36.8 ci (603 cc) |
| Engine Power | 14 hp | 18.5 hp |
| Cylinders | — | 2 |
| Start Type | — | Electric |
| Fuel Type | — | Gas |
| Engine Make | Kawasaki® FS Series | Kawasaki® FS600V |
| Deck | ||
| Cutting Width | 36 in (914 mm) | 36 in (914 mm) |
| Min Cut Height | 1.7 in (44 mm) | 1.5 in (38 mm) |
| Max Cut Height | 4.5 in (114 mm) | 4.5 in (114 mm) |
| Deck Material | — | 10-gauge, Fabricated |
| Deck Construction | Dual-plate cutter deck constructed of 2 steel plates. Reinforcement plate at cutter deck spindles. | — |
| Deck Gauge | — | 10 |
| Drive | ||
| Drive Tire Size | 16″ x 6.5″-8″ | — |
| Ground Speed | 7.4 mph | 6 mph |
| Transmission | — | Dual, commercial Hydro-Gear® ZT-3100® transaxles with 7" mounted cooling fans |
| Reverse Speed | 3 mph | 3 mph |
| Drive System | Dual Pump and Motor | — |
| Dimensions | ||
| Weight | 515 lbs (233.6 kg) | 632 lbs (286.7 kg) |
| Fuel Capacity | 5.5 gal (20.8 L) | 5 gal (18.9 L) |
| Length | — | 73 in (1854 mm) |
| Commercial / Pro | ||
| Seat Type | n/a | — |
| General | ||
| Warranty | — | 2 yr |
Where these models differ, explained
SWZ Hydro-Drive: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — scag.com.
FW25 Walk Behind Mower (36 in / 5901886): Specs verified against the manufacturer spec sheet on Jun 6, 2026 — ferrismowers.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.