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.
- Exmark Exmark Navigator Mower (48 in deck) — commercial: daily paid use and high acreage; 48-inch deck; gas powered
- Walker Walker Model B27ix — commercial: daily paid use and high acreage; 48-inch deck; gas powered
What’s different? The 4 differences that matter most, from the published figures.
- Exmark Navigator Mower (48 in deck) uses a Kohler CH749 engine; Walker Model B27ix uses a Rehlko 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.
- Exmark Navigator Mower (48 in deck) has a published top speed of 7 mph; Walker Model B27ix has a published top speed of 9.6 mph, a 2.6 mph difference. Top speed is the maker's maximum in transport. Mowing speed is lower and depends on grass, terrain and the deck.
- Exmark Navigator Mower (48 in deck) holds 7.5 gal (28.4 L) of fuel; Walker Model B27ix holds 9.4 gal (35.6 L) of fuel, a 1.9 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.
- Exmark Navigator Mower (48 in deck) cuts from 1 in (25 mm) to 4 in (102 mm); Walker Model B27ix cuts from 1.5 in (38 mm) to 4.5 in (114 mm). The cut-height range is the shortest and tallest cut the deck offers. Most lawns are kept well inside it.
calculated figures and what isn’t comparable
Calculated by MowerFacts
- Exmark Navigator Mower (48 in deck) works out to 2.7 acres/hour; Walker Model B27ix works out to 3.7 acres/hour, a 1.0 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 Exmark Navigator Mower (48 in deck).
- Weight: not published for Exmark Navigator Mower (48 in deck).
- Transmission: not published for Exmark Navigator Mower (48 in deck).
- Fuel Type: not published for Exmark Navigator Mower (48 in deck).
- Price: Walker Model B27ix 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 | Exmark Navigator Mower (48 in deck) Exmark · Commercial |
Walker Model B27ix Walker · Commercial |
|---|---|---|
| List price | $20,899 | dealer quote |
| Engine | ||
| Power Source | gas | gas |
| Engine Make | Kohler CH749 | Rehlko |
| Displacement | — | 45.6 ci (747 cc) |
| Engine Power | 26.5 hp | 26.5 hp |
| Fuel Type | — | Automotive Grade Unleaded Gasoline (87 Octane or Greater, 10% Ethanol Maximum) |
| Deck | ||
| Cutting Width | 48 in (1219 mm) | 48 in (1219 mm) |
| Min Cut Height | 1 in (25 mm) | 1.5 in (38 mm) |
| Max Cut Height | 4 in (102 mm) | 4.5 in (114 mm) |
| Drive | ||
| Transmission | — | Dual, Independent Hydro-Gear® ZT3100 Integrated Transaxles |
| Ground Speed | 7 mph | 9.6 mph |
| Dimensions | ||
| Weight | — | 720 lbs (326.6 kg) |
| Fuel Capacity | 7.5 gal (28.4 L) | 9.4 gal (35.6 L) |
Where these models differ, explained
Walker Model B27ix: Specs verified against the manufacturer spec sheet on Jun 6, 2026 — walker.com.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.