Webb WER21ALSP 21" (53cm) Aluminium Deck Self-Propelled Petrol Rotary Lawnmower
The WER21ALSP sits at the top of Webb's walk-behind petrol range — the largest cutting width, the biggest collection bag, and premium aluminium deck construction throughout. For large gardens where quality and durability are the priority, it represents the best specification Webb offer in a push-behind machine.
The 161cc Briggs & Stratton 750EXi engine delivers reliable, efficient power across the full 21" (53cm) cutting width, and the aluminium deck keeps the overall weight manageable despite the machine's size — lighter than a comparable steel deck while offering better long-term corrosion and impact resistance. The 4 Swing Tip blade system protects against crankshaft damage when the blade encounters hidden stones or roots, and four cutting modes give complete flexibility across different lawn conditions and seasons.
The 70-litre mesh collection bag is the largest in the Webb range — noticeably bigger than the 65-litre bags on the 18" and 19" models — and the mesh design ensures it fills completely before needing emptying rather than compacting at the top. Eight cutting heights from 25-90mm via a single lever covers the full range from a close formal finish to tackling genuinely long grass, and self-propelled drive at 3.9km/h covers larger areas efficiently without effort.
Worth noting — this model is not fitted with a throttle lever. Backed by a 3-year warranty with UK-based customer support.
Key Specifications
| Feature | Detail |
|---|---|
| Engine | 161cc Briggs & Stratton 750EXi |
| Cutting Width | 21" (53cm) |
| Deck | Aluminium |
| Blade System | 4 Swing Tip |
| Drive | Self-propelled — 3.9 km/h |
| Cutting Heights | 8 positions — 25 to 90mm |
| Collection Bag | 70 litres (mesh) |
| Cutting Modes | Collect, mulch, rear discharge, side discharge |
| Handle | Folding |
| Weight | 45kg |
| Throttle Lever | Not fitted |
| Warranty | 3 years |
