AS 531 2T ES MK B Professional 2-Stroke Bank Mower

The AS 531 2T ES MK B is the 53 cm mower contractors choose when steep banks, uneven ground and wet grass are part of the job. Its AS 165 ES 2-stroke engine keeps full lubrication at any angle, giving you reliable power and safe operation on slopes where 4-stroke mowers struggle or risk engine damage. It delivers strong torque for clean bagging in heavier growth, making it a dependable tool for embankments, verges and awkward sites.

This model includes the full AS safety package, with an automatic parking brake and limited-slip differential for confident control when working across slopes or moving on damp, uneven ground. The blade clutch, V-handlebar and 75-litre collection bag keep the mower practical and efficient for long commercial days. For contractors, estates and grounds teams dealing with real-world slopes, the AS 531 2T ES MK B is built to keep the work moving without compromise.

What the AS 531 2T ES MK B Is Built For

The AS 531 2T ES MK B is made for steep, uneven and damp ground where a standard mower becomes unreliable or unsafe. Its 2-stroke engine keeps full lubrication at any angle, allowing the machine to work on banks well beyond 40 degrees without risking engine damage. This makes it the dependable choice for contractors, councils and grounds teams who deal with verges, ditches, terraced lawns and awkward embankments that a 4-stroke mower simply cannot handle.

Because the engine produces strong torque even at low rpm, this model keeps cutting and bagging in conditions that would slow or stall a 4-stroke machine. Wet grass, thick patches and morning dew don’t sap the power as much, giving operators a consistent cut and cleaner bag fill across a full shift. If the work involves regular slopes or damp ground, the 2-stroke version is the one that remains stable and predictable.

Who This Model Suits

• Contractors handling banks, ditches and uneven sites.
• Council and roadside teams working on verges and embankments.
• Grounds crews for estates, parks and cemeteries with terraced areas.
• Operators who need safe behaviour and strong traction on slopes.

Why It Works So Well on Slopes

The position-independent 2-stroke engine is the core advantage. Unlike a 4-stroke, it doesn’t starve itself of oil when operated across an angle. That stability is backed up by the automatic limited-slip differential, which helps both wheels drive together, reducing wheelspin on damp ground. The automatic parking brake stops and holds the machine the moment the blade clutch is released, giving you control when repositioning on banks or uneven surfaces.

The lighter feel at the front of the machine makes it easier to guide along edges and slopes, and the overall weight distribution keeps it stable without feeling heavy to steer. Combined with the blade clutch, you’re able to stop the blade instantly for safety while keeping the engine running as you move between work areas.

Where It Sits in the AS Range

This is the slope-focused professional collector in the AS 531 family. It offers everything the MK B provides—safety brake, diff lock, blade clutch and 3-in-1 cutting—but with the added torque and slope capability that only the AS two-stroke engine delivers. It sits below the 4WD RB in extreme banking, but covers the widest range of slope work where collection is still required.

Optional Accessories

• Tilt Meter: Gives operators a clear indication of slope angle when working at the mower’s limits.
• Hour Meter: Useful for maintenance tracking and contract reporting.

Operational Realities Worth Knowing

The AS 531 2T ES MK B uses more fuel than a 4-stroke and it produces a sharper sound, which is expected from a high-torque two-stroke engine. The trade-off is far better performance and safety on steep or damp ground. Operators should use good-quality 2-stroke mix and keep the blade sharp for best results, especially when collecting in wet conditions.

Despite its capability on slopes, it’s still a collector mower rather than a brush cutter. If the work involves scrub or very rough grass, the Allmäher models or the 4WD RB may be more suitable. But for contractors who need a mower that can collect cleanly while holding its ground on banks, the 2T ES MK B is the one that consistently performs.

How Suffolk Mowers Supports Your AS 531 2T ES MK B

Choosing the AS 531 2T ES MK B from Suffolk Mowers means you’re buying from a dealer that understands the realities of slope work. Before it leaves our workshop, we set the machine up correctly, confirm the safety brake and differential lock engage cleanly, and check that the blade clutch, drive system and controls operate the way they should. If you’re comparing it with the 4-stroke models or the 4WD RB, we’ll explain the differences clearly so you’re confident the mower matches the terrain you’re working on.

The AS 2-stroke engine is designed for heavy commercial use, and our workshop handles all servicing, blade work and repair tasks. We keep filters, belts, blades and most routine parts in stock, and we can help you set up a maintenance schedule if this mower is going to be used across several sites or by multiple operators. Because slope work exposes machines to tougher conditions, we also check wear points more closely during services to keep the mower safe and reliable.

Accessories such as tilt meters, replacement bags and hour meters are available, and we can help you decide which spares are worth keeping on the van if you rely on the mower daily. For contractors doing regular bank work, having the right backup parts makes a big difference to uptime.

AS-Motor offers up to a 2-year professional warranty when the mower is serviced through an authorised dealer. Suffolk Mowers handles all warranty inspections and claims directly, so if you ever run into an issue, you can bring the machine straight to us and we’ll deal with the paperwork and repair process.

Technical Specifications

Frequently Asked Questions About AS 531 2T ES MK B

The AS 165 ES engine has position-independent lubrication, meaning it can run safely at steep angles without losing oil supply. This allows the mower to work on slopes over 40 degrees without risking engine damage.

Yes. The 2-stroke engine produces stronger torque at low rpm, which keeps the blade turning in heavy or damp growth. This improves cut quality and bag fill in conditions where 4-strokes often bog down.

Very. When you release the blade clutch lever, the brake engages instantly and holds the mower in place. This makes repositioning on steep ground safer and more controlled.

Yes. The mulch kit is included and can be fitted without tools. You can switch between mulching, collecting or rear discharge depending on the conditions.

Definitely. You can stop the blade while keeping the engine running. This is ideal for emptying the bag, crossing paths, or moving through areas with obstacles.

AS-Motor provides up to a 2-year professional warranty when serviced through an authorised dealer. Suffolk Mowers manages the inspection and claim process directly.