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Alpina AT3 98 HA Riding-on Mowers with Stiga ST 400 Engine

Questions & Answers (12)
ID: K606641

EAN: 8008984851559

MPN: 2T0610404/A22

Alpina AT3 98 HA Riding-on Mowers with Stiga ST 400 Engine
+500 sold
2 bottles of 1 L oil each2 bottles of 1 L oil each
Replacement spark plug kitReplacement spark plug kit
Protection kit: gloves, googles, ear defenders, Agrieuro headscarf for free!Protection kit: gloves, googles, ear defenders, Agrieuro headscarf for free!
Side discharge
Mulching cutting system
Motor brand
Motor Model
ST 400
Cubic capacity
414 cm³
Nominal power
14 HP
Recommended operating area
5000 s.q. m.
Cutting width
98 cm
No. of blades
Reverse speed cutting
Blade engagement
Gear shifting system
Product Features
AT3 98 HA
Side discharge cutting system:
Standard equipment
Mulching cutting system:
Cutting system:
2 in 1 - Side discharge + Mulching (optional)
Recommended operating area:
5000 s.q. m.
Starting mode:
Manufacturing country:
Motor data
Motor brand:
Motor Model:
ST 400
Motor type:
Cubic capacity:
414 cm³
No. of cylinders:
Nominal power:
14 HP
Rated power (HP):
9.51 HP
Tank capacity:
6 L
Outer oil filter:
Manufacturing country:
Transmission data
Gear shifting system:
Operating mode:
Double pedal system
Cutting data
Body material:
Enamelled steel
Cutting width:
98 cm
No. of blades:
Blade type:
Cutting blades + mulching
Blade engagement:
Max. cutting height:
80 mm
Min. cutting height:
25 mm
No. of cutting positions:
Reverse cutting system:
Non-marking wheels:
Washing joint:
Grass discharge side deflector:
Front Bull Bar:
On Standard equipment
Electric start with key :
Rear wheels size:
18 x 8.5 - 8
Front wheels size:
15 x 6.00 - 6
Seat type:
Seat adjustment:
Can holder:
Free gifts/extra features
Mulching kit:
Free items:
Petrol Leaf Blower
Instructions manual:
Dimensions and logistics
Product dimensions in cm (L x W x H):
172X120X110 cm
Net weight:
162 Kg
Original packaging on pallet
Original packaging/s dimensions in cm (L x W x H):
170x110x110 cm
Gross weight (packaging included) :
192 Kg
Unloading with hydraulic tail lift:
Assembly time:
60 minutes
Prompt Delivery
51 items in stock
Free Shipping
Estimated delivery: 10/06/2024 - 12/06/2024
€ 2.599,77
VAT Included
Available versions
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Alpina AT3 98 HA Riding-on Mower

Alpina AT3 98 HA is a performing and functional machine, ideal to work on tall, unkempt vegetation in wide, unkempt spaces.

This riding-on mower is equipped with a 414 cc Stiga ST 400 engine, powerful and low-consumption, for balanced and excellent performance. Suitable for maximum surfaces of 5000 sqm.

The grass is cut with the large 98 cm cutting deck, which features two steel blades with electromagnetic engagement. The grass is then discharged laterally thanks to the supplied deflector on the cutting deck.

7 different cutting heights available, easy to adjust through a lever, from a minimum of 25 mm to a maximum of 80 mm.

As well as the side discharge, this riding-on mower features mulching cut (optional).

Hydrostatic transmission, which allows you to move forward or backward simply by pressing the two pedals on the footboard. Depending on the pressure exerted on the pedals, the forward and reverse speeds will increase respectively. On the other hand, the brake pedal will stop the machine.

This transmission allows you to easily avoid obstacles or to pass through narrow spaces.

Sturdy front bumper to protect it from accidental shocks.

AT3 98 HA also features two front headlights to work even in low light conditions.

A riding-on mower that provides the right balance between handling and practicality.

STIGA ST 400 Engine

Alpina AT3 98 HA riding-on mower features a STIGA ST 400 engine. Suitable for operations that require really high power.

Single-cylinder 7.1 kW, 414 cc, 4-stroke engine of the latest generation with 'OHV' overhead valve shaft and equipped with anti-vibration system and electronic ignition system.

Main features:

Engine type: Single-cylinder 4-stroke - OHV
Cylinder type: aluminium
Cubic capacity: 414 cm³
Air cooling system
Fuel tank capacity: 6 L


Nominal Power: 14 HP
The correct term would be "Commercial” Power, meaning the standard definition used until a few years ago by all well-known engine manufacturers.

* This technical feature is the one indicated in the main sales channels, even if it is higher than the real power of the engine.

Effective power: 9.51 HP (a rotation speed of 2800 rpm)
It refers to the real power of the engine. This is the power indicated as official in the engine instructions manual.

* This technical feature may vary from an engine model to another according to the rotation speed provided by the manufacturer.

Cutting Systems

1- SIDE DISCHARGE (standard supplied): the most traditional cutting system which allows cutting the grass and leaving it on the lawn. This system is recommended for mowing large-sized areas and for those who have to cut over-grown grass, for which the mulching or the grass collector system are no longer efficient.

2- MULCHING (optional): this system allows shredding the grass really finely, so that it looks as if it has been collected. This eliminates the problem of its disposal (reducing any effort and shortening the time-saving). Moreover, grass clippings will break down into nutrients and water for the lawn (grass is 80% water) and will thus ensure a perfectly balanced biological cycle. However, it is worth remembering that, to ensure the greatest mulching results, the lawn should be irrigated and the grass needs cutting at least once a week. The conversion from one system to another is easy.

Hydrostatic Transmission

With this modern hydrostatic transmission, driving the machine will be easy and within everyone's reach, you can easily control the the mower with your right foot on the footboard.

Operation: To move forward, simply press the dedicated pedal with the tip of your foot, while to activate the reverse, simply press the other end of the pedal with your heel. In both cases, the speed will increase according to the pressure exerted on the pedals.

The machine stops when you release the pedals.

- The hydrostatic transmission is by far the most modern and functional (although it is more expensive) compared to the traditional manual transmission with gears. Whenever the speed is changed, the manual transmission forces the operator to stop the unit, change gear, release the clutch and re-start the machine at the desired speed. This would be uncomfortable and impractical in gardens or terrain full of obstacles, where you have to change speed very often. The hydrostatic transmission, on the other hand, allows immediate speed changes, automatically and without ever stopping, simply by varying the pressure on the pedal.

Cutting Deck

Alpina AT3 98 HA riding-on mower features a 2-blade cutting deck.

98 cm cutting deck width.

The cutting deck of the riding-on mower is tilting: it adapts easily to the unevenness of the ground (as long as they are not excessive).

Electromagnetic blade engagement controlled through the button placed on the right part of the steering wheel. This system works thanks to an electromagnetic clutch that allows an easy and fast blade engagement.

This Alpina riding-on mower allos you to cut grass even in reverse, which is a really popular option among users.

7 cutting heights available, from 25 mm to 80 mm. You can adjust the cutting height through a specific lever located on the side of the machine.

The cutting deck also features two convenient non-marking wheels and a washing joint, to quickly wash the blades using a small hose.

- Focus on the hybrid blades also suitable for mulching cut

Controls and Adjustments

Controls and adjustments:

  • Speed variator
  • Parking brake
  • Ignition lock with key
  • Brake pedal
  • Cutting height adjustment lever
  • Hydrostatic transmission with pedal
  • Electromagnetic blade engagement

Additional Features

Other features of the Alpina riding-on mower:

  • Opening engine bonnet to allow cleaning and maintenance operations
  • Seat: adjustable and comfortable
  • Ergonomic steering wheel
  • Sturdy front bull bar
  • Front headlights
  • Rear wheels: 18 x 8.5-8
  • Front wheels: 15 X 6.00-6
  • Pivoting front wheel axle: provides excellent balance, stability and comfort even on uneven terrain.
  • Can holder
  • Storage compartment

- Focus on the headlights

- Focus on the storage compartment

Free items & Standard equipment

Spare Parts and Maintenance Kit for Petrol Engines

Universal spare parts and accessories maintenance kit for the 4-stroke engines for gardening machineries.

WARNING: this kit is not suitable for all types of engines on the market. We do not provide different kits from those you see already published on this site nor do we guarantee the adaptability on machines not purchased on our site.

Included in the packaging are:

  • No. 02 1 L oil bottles: synthetic lubricant formulated for high performance levels. Suitable for all modern petrol engines which require maximum performance from a lubricant.
  • No. 01 original GeoTech spark plug
  • No. 01 professional joint spark plug socket wrench



Protective earmuffs to work with maximum comfort.
Hearing protection must be the right one for any working situation. In this case, the earmuffs supplied are specifically designed to protect the operator from the noise of the machine.

Protective goggles that can be used as an alternative to the visor mask.
Protective mask goggles in polycarbonate with CE certificate, equipped with anti-fog and anti-scratch panoramic screen. The ventilation is ensured thanks to the holes made on the frame to avoid fogging and to improve comfort of use.

Agrieuro headscarf 100% cotton

Cotton gloves with rubber waves, for greater comfort and a secure and stable grip on the equipment

COMPLIMENTARY: BLACKSTONE W270 leaf blower - garden vacuum - shredder

The BLACKSTONE W270 petrol leaf blower - garden vacuum is a functional product which guarantees excellent performance when cleaning green spaces, gardens, houses and wide public spaces. Versatile, handy and easy to use, the W270 Blackstone leaf blower - garden vacuum is a well-balanced tool, with a double grip which provides for a great practicality and ease of use.

Powered by a 26 cc 2-stroke engine capable of reaching a blowing speed of up to 245 Km/h. The power of this leaf blower makes it perfect for cleaning squares, gardens, large green spaces and remove large piles of autumn leaves. The leaf blower is also equipped with a shredding function which is activated with the vacuum mode. The blade behind the air blowing/suction fan finely cuts the vacuumed leaves reducing their volume and then exploits the vacuum power of the fan to convey them in the 35 L collection bag. This allows to work in a smooth and time-saving way.

The blower can perform 3 different functions: leaf blower, garden vacuum and shredder. The conversion from one function to another is carried out easily and quickly: just remove the blower tube and install the vacuum one.

Free Items Included

The riding-on mower is shipped in its original packaging.

Side deflector included

Multilingual instructions for assembly and maintenance.

Once assembled the machine, please read the instructions manual carefully before starting.

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