Webb WER21HW4 Supreme 21" (53cm) Self-Propelled 4 Swing Tip Blade Petrol Lawnmower
The WER21HW4 is the largest mower in Webb's Supreme range and it's specified accordingly — a 163cc Briggs & Stratton 725EXi engine, 21" (53cm) cutting width, and the fastest self-propelled speed in the range at 3.9km/h. For larger lawns where covering ground quickly matters, the combination of the widest cutting deck and the fastest drive speed makes a meaningful difference to how long mowing takes.
The 725EXi engine features Briggs & Stratton's Ready Start system — no priming, no choke, just pull the cord and it starts. The 163cc displacement delivers the torque needed to maintain blade speed through longer, thicker grass without slowing down, and the OHV design keeps fuel consumption and emissions low throughout. Large ball-bearing rear wheels give better manoeuvrability on harder surfaces compared to standard wheels, and the wash port allows the deck to be cleaned with a garden hose rather than getting underneath the machine.
The 4 Swing Tip Blade system protects against blade and crankshaft damage when the mower encounters hidden stones or roots — the blade tips retreat on impact rather than transferring force through the drivetrain. Four cutting modes cover every situation, eight heights from 20-80mm via a single lever covers the full seasonal range, and the 65-litre mesh collection bag fills completely before needing emptying.
Backed by a 3-year warranty.
Key Specifications
| Feature | Detail |
|---|---|
| Engine | 163cc Briggs & Stratton 725EXi |
| Start System | Ready Start (no prime or choke) |
| Cutting Width | 21" (53cm) |
| Blade System | 4 Swing Tip |
| Drive | Self-propelled — 3.9 km/h |
| Cutting Heights | 8 positions — 20 to 80mm |
| Collection Bag | 65 litres (mesh) |
| Cutting Modes | Collect, mulch, rear discharge, side discharge |
| Deck Cleaning | Wash port |
| Rear Wheels | Large ball-bearing |
| Handle | Folding |
| Warranty | 3 years |
