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Key differences: RAZOR 21 PUSH has less weight and a smaller engine. RAZOR 21 SELF PROPELLED has more weight and a larger engine.
Objective comparison of stated specs — not a recommendation.
How to read the labels
- larger / more / wider / faster — this mower has the higher value for that spec.
- smaller / less / lighter / slower — this mower has the lower value.
- Labels are directional only; whether more is desirable depends on your needs.
- Note: a lower deck-gauge number means thicker steel, so for Deck Gauge a smaller number is the more durable deck.
| Spec | RAZOR 21 PUSH Ariens · Push / Walk-Behind |
RAZOR 21 SELF PROPELLED Ariens · Push / Walk-Behind |
|---|---|---|
| Engine | ||
| Power Source | gas | gas |
| Displacement | 9.2 ci (150 cc) smaller | 9.9 ci (163 cc) larger |
| Engine Make | Briggs & Stratton EX 625 | Briggs & Stratton EXi 725 |
| Deck | ||
| Cutting Width | 21 in (533 mm) | 21 in (533 mm) |
| Min Cut Height | 1 in (25 mm) | 1 in (25 mm) |
| Max Cut Height | 4 in (102 mm) | 4 in (102 mm) |
| Blades | 1 | 1 |
| Blade Tip Speed | 17001 ft/min (5182 m/min) | 17001 ft/min (5182 m/min) |
| Cut Positions | 7 | 7 |
| Drive | ||
| Drive System | — | General Transmission® MA 300 |
| Ground Speed | — | 3.7 mph |
| Dimensions | ||
| Weight | 69 lbs (31.3 kg) lighter | 77 lbs (34.9 kg) heavier |
| Fuel Capacity | 0.3 gal (1.1 L) | 0.3 gal (1.1 L) |
| General | ||
| Warranty | 3 yr | 3 yr |
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.