The AS 65 4T B&S is a 65 cm Allmäher built for tall grass, rough patches and mixed growth where you need plenty of cutting force but don’t want the weight or complexity of a flail mower. Its B&S Series 3 engine and 1:2 blade reduction give the torque needed to push through dense areas that lighter meadow mowers struggle with. The cross-blade system shreds tall growth into a fine mulch without relying on high blade speed alone.
It suits contractors, councils and smallholders who face a mix of meadow grass, coarse weeds and occasional scrub. The machine is narrow enough for tighter access and settled on moderate slopes, and the closed deck helps contain debris when the ground isn’t clean. For users who want a rough cutter that is strong, manageable and predictable, the AS 65 sits in the middle ground between the lighter Allmäher models and full flail machines.
Working capability and real-world use
The AS 65 4T B&S is designed for areas where growth is heavy enough to bog down ordinary rotary rough cutters but doesn’t justify the jump to a flail. Its 1:2 blade reduction gives real torque when pushing into thick, tall grass, coarse weeds and light scrub. The cross-blade system keeps the material circulating in the closed deck long enough to shred it down, leaving a consistent mulch even when the vegetation is uneven in density.
Where it sits in AS-Motor’s range
This model sits between the lighter Allmäher machines and the flail mowers. It has more bite than the AS 62 or AS 21, and more cutting force in mixed vegetation than the AS 73. But it stays lighter and easier to manoeuvre than a flail mower. Compared with the AS 63, it trades slope capability for extra torque and better performance in rougher growth.
Who the machine suits
- Contractors handling field margins, rough verges and dense meadow grass
- Councils maintaining irregular, tall-growth areas that aren’t full of woody debris
- Estates, orchards and smallholdings with coarse grass and occasional scrub
- Users who need more power than the AS 62 or AS 21 but don’t want a flail
If the job is mainly tall, soft grass, the AS 73 is usually faster. If the job is mainly dense, mixed growth, the AS 65 is the more sensible choice.
Strengths that matter day to day
- Strong cutting force in dense growth thanks to the reduction drive
- Cross-blade system copes well with coarse and uneven vegetation
- Closed deck for finer shredding and reduced thrown debris
- Settled handling on moderate slopes with studded tyres and balanced weight
- Straightforward three-lever control layout that feels predictable on rough ground
- Narrow 65 cm deck helps in tighter access or around obstacles
Operational realities
The AS 65 is built for heavy grass, not for thick woody stems. It will handle occasional bramble, but repeated impacts on heavy brash will wear blades quicker and can stress the cutting system. It performs well on slopes, but if steep banks are the main job a dedicated slope mower such as the AS 63 remains the safer option. For day-long work, its lighter weight compared to a flail is a real advantage.
Accessories worth considering
- Twin tyres: improve grip and stability for slope work
- Steel wheels: help when mowing across banks or softer ground
- Electric start: useful for frequent stop-start commercial work
- Hand guards: add protection when tackling brashy patches
- Hour meter: practical for service scheduling
How Suffolk Mowers Supports Your Purchase
Suffolk Mowers delivers the AS 65 4T B&S fully assembled, tested and ready to work. We check the drive system, blade clutch, reduction drive and cross-blade setup before handover, so you know the machine is safe and properly tuned for rough growth. If your ground includes slopes or softer patches, we can advise on whether twin tyres or steel wheels are worthwhile.
We keep genuine parts, blades and service items in stock, and our workshop handles routine servicing, repairs and pre-season checks for contractor fleets and estate teams. If you need guidance on managing dense growth, blade care or general setup, we’ll talk you through it. The aim is straightforward: keep your machine cutting cleanly and running reliably throughout the season.
Technical Specifications
| Cutting width | 65 cm |
| Maximum grass height | 150 cm |
| Engine manufacturer | B&S |
| Engine type | Series 3 Intek |
| Displacement | 344 cm³ |
| Power (max.) | 9.7 kW / 13.0 hp |
| Rated power | 7.6 kW / 10.3 hp |
| Nominal speed | 3300 rpm |
| Transmission | 5-speed manual with reverse |
| Forward speed | 1.6 – 5.1 km/h |
| Reverse speed | 2.4 km/h |
| Limited-slip differential | Yes (switchable) |
| Automatic parking brake | Yes |
| Mower deck | Closed deck with rear discharge |
| Cutting system | Cross-blade (main blade + wing blade) |
| Blade reduction | 1:2 engine-to-blade reduction |
| Cutting height | 50 – 100 mm (central adjustment) |
| Fuel tank capacity | 5 litres |
| Dimensions (L × W × H) | 220 × 71 × 99 cm |
| Weight | 125 kg |
| Warranty | 2-year commercial warranty |

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