AT4 98 HA

A 98cm garden tractor with a 432cc STIGA engine and a hydrostatic drive. Can either mulch clippings or collect them in a 240-litre catcher.
  • check Top-quality STIGA engine
  • check Sizeable 98cm cutting-width
  • check Foot-pedal hydrostatic transmission for intuitive ground-speed adjustment
  • check Comfortable, ergonomically optimised seat and steering-wheel
Large enough to cover a substantial area fast, but compact enough to be easy to manage, the Alpina AT4 98 HA is ideal for gardeners looking to take their first steps into the world of petrol garden tractors!
Supplying an impressive 7.2kw to the blades and rear wheels is a 432cc STIGA ST 450 engine for low-emission operation and excellent fuel-economy; and an electric key ignition-system for rapid, reliable starting every single time.
The highly manoeuvrable AT4 98 HA benefits from a foot-pedal-controlled hydrostatic transmission; a premium feature that gives the driver smooth, car-like ground-speed control with no need to stop and manually change gear.
Both collection- and mulch-capable, and offering seven pre-set cutting-height positions, the AT4 98 HA is an adaptable machine that can be set-up to perform effectively on a wide variety of grass-types (mulch-kit optional).
Powerful headlights will enable you to keep going well into the evening, if necessary; while electromagnetic PTO engagement means you can start and stop the blades at the simple push of a button.
A delight to drive, the AT4 98 HA has an LED dashboard display and combines an Alpina Ergonomic steering wheel with an Alpina Smart low-back seat.
Also featured is an audible warning alarm that alerts you when the 240-litre collector has reached capacity.
This 98cm model is a good match for areas up to 4500m2.
More Information
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Short DescriptionA 98cm garden tractor with a 432cc STIGA engine and a hydrostatic drive. Can either mulch clippings or collect them in a 240-litre catcher.
EAN/UPC8008984851450
Unique selling point 04Comfortable, ergonomically optimised seat and steering-wheel
Unique selling point 01Top-quality STIGA engine
Unique selling point 03Foot-pedal hydrostatic transmission for intuitive ground-speed adjustment
Unique selling point 02Sizeable 98cm cutting-width
Key features 1 descriptionPowerful but fuel-efficient and clean-running engine from STIGA
Key features 1 titlePowered by STIGA engine
Key features 2 titleSmooth speed control
Key features 2 descriptionHydrostatic drive for smooth ground-speed control in both forward and reverse
Key features 3 titleA versatile, collecting machine
Key features 3 descriptionCan either bag, mulch or rear-discharge clippings
Key features 4 titleAlways know when to stop
Key features 4 description‘Grassbag full’ alarm lets you know when it’s time for an emptying-stop
Key features 5 titleLED headlights
Key features 5 descriptionPowerful headlights provide illumination in murky conditions
Award 3 logono_selection
Award 2 logono_selection
Award 1 logono_selection
Certification CE logono_selection
Certification EAC logono_selection
FAQ 1 questionWhat is the proper way to clean the lawn tractor after mowing the grass?
FAQ 1 answerThe exterior of the tractor mower must be cleaned with water and detergent, paying attention not to get water in the electrical system, motor and circuit board located under the instrument panel. The collection bag should be emptied and cleaned of residue, then remounted so the cutting assembly can be washed, and then removed, rinsed and allowed to dry. When washing the cutting device assembly and the expulsion chute, the collection bag or rear discharge shield must be fitted, the operator must be seated, the cutting device assembly must be in position “1”, the engine running, transmission placed in neutral and the cutting device must be connected. Then connect a water hose to the appropriate pipe fittings and allow the water to flow for a few minutes while keeping the cutting devices in motion.
FAQ 2 questionWhat action should be carried out before winter storage or before storing it for a period longer than 30 days?
FAQ 2 answerAfter allowing the engine to cool down and fully recharging the battery, disconnect the battery cables and store it in a cool and dry place. Empty the fuel tank, clean the machine thoroughly, check the condition of the cutting device assembly, and, if necessary, contact the service centre. Then store the lawn tractor with the cutting deck in a lowered position, in a sheltered environment and, if possible, covered with a sheet.
FAQ 3 questionWhat action should be carried out before initially using a riding tractor that has been stored over a winter or for a period longer than 30 days?
FAQ 3 answerRefuel it and check the oil level, air filter and petrol filter. Check that the tyres are correctly pressurised and then set up the lawn mower tractor according to how you intend to carry out the mowing (side discharge, collection, rear discharge, mulching). For further information about the preliminary operations and safety checks, please refer to the designated sections of the instructions manual.
FAQ 4 questionWhat standard maintenance operations does the lawn mower tractor need?
FAQ 4 answerBefore each use, we recommend that you perform safety and control checks, check the tyre pressure, and replenish the fuel and oil tank, if necessary. After each use, arrange for a general cleaning of the riding tractor. Please refer to the designated section of the instruction manual (“maintenance table”) for the regular actions recommended to ensure optimal use of the machine.
FAQ 5 questionWhat are the cutting functions of the lawn tractor?
FAQ 5 answerThe riding tractor can be set up in different cutting modes: rear bag collection or rear discharge, or mowing and chopping the grass using the special “mulching kit” function. The mulching cutting system allows you to mow the grass into fine particles, which remain on the lawn, restore nutrients and support growth.
FAQ 6 questionWhat kinds of parts and accessories can the lawn tractor be equipped with?
FAQ 6 answerThe lawn tractor can be equipped with various parts and accessories to increase its functions and ensure maximum versatility all year round. For the complete list of parts and accessories, please refer to the relevant product page on the website.
Battery capacity18 Ah
Power7.2 kW
Power sourcePetrol
Engine BrandSTIGA
Engine modelST 450 Powered by STIGA
Displacement432 cm³
Engine rotation speed2600 rpm
Battery Voltage12 V
ChokeManual
Engine coolingAir
Fuel tank capacity6 l
Maximum working area4500.000000
Cutting methodCollecting
Minimum uncut radius70 cm
Cutting width98 cm
Reverse mowingYes
Blade rotationUntimed
Cutting height adjustmentManual with lever
Cutting height positions7 positions
Cutting height range25 - 80 mm
Number of blades2
Additional cutting methodRear discharge, Mulching
Blade engagement typeElectric
TractionRear-wheel drive
Transmission methodPedal-operated
Transmission typeHydrostatic
Collector emptyingManual
Collector capacity240 l
Steering wheelAlpina ergonomic
Seat typeAlpina smart with low back support
Seat adjustmentScrews
DashboardYes with LED
Front wheel size15x6.00-6
Rear wheel size18x8.50-8
Hour meterNo
HeadlightsConventional
Cruise controlNo
BumperYes
Washing linkYes
Collector typeTextile
Storage compartmentYes
Cup holderYes
Pivoting front axleYes
Antiscalp wheels2
Safety systemSeat with Safety Contact Breaker
Mulching kitOptional
Battery chargerOptional
Trailer hitch kitOptional
Measured sound pressure level at operator ear dB(A)86
Measured sound power level dB(A)100
Max vibration on steering wheels (m/s2)8.2
Max vibration on driver's seat (m/s2)0.7
Guaranteed sound power level (LwA) - dB(A)100
Pack weight243.5 kg
Product length2338 mm
Product width1020 mm
Product height1100 mm
Product weight204.000000
SKU2T2610404/A22
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Key features

Product details and specs

Large enough to cover a substantial area fast, but compact enough to be easy to manage, the Alpina AT4 98 HA is ideal for gardeners looking to take their first steps into the world of petrol garden tractors!
Supplying an impressive 7.2kw to the blades and rear wheels is a 432cc STIGA ST 450 engine for low-emission operation and excellent fuel-economy; and an electric key ignition-system for rapid, reliable starting every single time.
The highly manoeuvrable AT4 98 HA benefits from a foot-pedal-controlled hydrostatic transmission; a premium feature that gives the driver smooth, car-like ground-speed control with no need to stop and manually change gear.
Both collection- and mulch-capable, and offering seven pre-set cutting-height positions, the AT4 98 HA is an adaptable machine that can be set-up to perform effectively on a wide variety of grass-types (mulch-kit optional).
Powerful headlights will enable you to keep going well into the evening, if necessary; while electromagnetic PTO engagement means you can start and stop the blades at the simple push of a button.
A delight to drive, the AT4 98 HA has an LED dashboard display and combines an Alpina Ergonomic steering wheel with an Alpina Smart low-back seat.
Also featured is an audible warning alarm that alerts you when the 240-litre collector has reached capacity.
This 98cm model is a good match for areas up to 4500m2.

Technical specs

General info
EAN/UPC8008984851450
SKU2T2610404/A22
Cutting system
Cutting methodCollecting
Minimum uncut radius70 cm
Cutting width98 cm
Reverse mowingYes
Blade rotationUntimed
Cutting height adjustmentManual with lever
Cutting height positions7 positions
Cutting height range25 - 80 mm
Number of blades2
Additional cutting methodRear discharge, Mulching
Blade engagement typeElectric
Transmission
Transmission methodPedal-operated
Transmission typeHydrostatic
Tools kit
Mulching kitOptional
Battery chargerOptional
Trailer hitch kitOptional
Overall dimensions
Pack weight243.5 kg
Product length2338 mm
Product width1020 mm
Product height1100 mm
Product weight204 kg
Power
Battery capacity18 Ah
Power7.2 kW
Power sourcePetrol
Engine BrandSTIGA
Engine modelST 450 Powered by STIGA
Displacement432 cm³
Engine rotation speed2600 rpm
Battery Voltage12 V
ChokeManual
Engine coolingAir
Fuel tank capacity6 l
Maximum working area4500 ㎡
Drive system
TractionRear-wheel drive
Equipment
Collector emptyingManual
Collector capacity240 l
Steering wheelAlpina ergonomic
Seat typeAlpina smart with low back support
Seat adjustmentScrews
DashboardYes with LED
Front wheel size15x6.00-6
Rear wheel size18x8.50-8
HeadlightsConventional
BumperYes
Washing linkYes
Collector typeTextile
Storage compartmentYes
Cup holderYes
Pivoting front axleYes
Antiscalp wheels2
Safety systemSeat with Safety Contact Breaker
Vibration and noise data
Measured sound pressure level at operator ear dB(A)86
Measured sound power level dB(A)100
Max vibration on steering wheels (m/s2)8.2
Max vibration on driver's seat (m/s2)0.7
Guaranteed sound power level (LwA) - dB(A)100

Support

Support

  • What is the proper way to clean the lawn tractor after mowing the grass?

    The exterior of the tractor mower must be cleaned with water and detergent, paying attention not to get water in the electrical system, motor and circuit board located under the instrument panel. The collection bag should be emptied and cleaned of residue, then remounted so the cutting assembly can be washed, and then removed, rinsed and allowed to dry. When washing the cutting device assembly and the expulsion chute, the collection bag or rear discharge shield must be fitted, the operator must be seated, the cutting device assembly must be in position “1”, the engine running, transmission placed in neutral and the cutting device must be connected. Then connect a water hose to the appropriate pipe fittings and allow the water to flow for a few minutes while keeping the cutting devices in motion.

    What action should be carried out before initially using a riding tractor that has been stored over a winter or for a period longer than 30 days?

    Refuel it and check the oil level, air filter and petrol filter. Check that the tyres are correctly pressurised and then set up the lawn mower tractor according to how you intend to carry out the mowing (side discharge, collection, rear discharge, mulching). For further information about the preliminary operations and safety checks, please refer to the designated sections of the instructions manual.

    What are the cutting functions of the lawn tractor?

    The riding tractor can be set up in different cutting modes: rear bag collection or rear discharge, or mowing and chopping the grass using the special “mulching kit” function. The mulching cutting system allows you to mow the grass into fine particles, which remain on the lawn, restore nutrients and support growth.

    What action should be carried out before winter storage or before storing it for a period longer than 30 days?

    After allowing the engine to cool down and fully recharging the battery, disconnect the battery cables and store it in a cool and dry place. Empty the fuel tank, clean the machine thoroughly, check the condition of the cutting device assembly, and, if necessary, contact the service centre. Then store the lawn tractor with the cutting deck in a lowered position, in a sheltered environment and, if possible, covered with a sheet.

    What standard maintenance operations does the lawn mower tractor need?

    Before each use, we recommend that you perform safety and control checks, check the tyre pressure, and replenish the fuel and oil tank, if necessary. After each use, arrange for a general cleaning of the riding tractor. Please refer to the designated section of the instruction manual (“maintenance table”) for the regular actions recommended to ensure optimal use of the machine.

    What kinds of parts and accessories can the lawn tractor be equipped with?

    The lawn tractor can be equipped with various parts and accessories to increase its functions and ensure maximum versatility all year round. For the complete list of parts and accessories, please refer to the relevant product page on the website.

Compatible Products

Related Accessories

  1. REAR DEFLECTOR KIT 84-98 CM
    REAR DEFLECTOR KIT 84-98 CM
    original rear deflector kit for garden tractors with 84-98 cm cutting decks. Use it during Spring and Summer to cut grass in rear discharge mode.
  2. MULCHING KIT WITH BLADES 98 CM
    MULCHING KIT WITH BLADES 98 CM
    original mulching kit for garden tractors. Includes muclhing blade and plug. Ideal to be used throughout Spring and Summer.
  3. TRAILER HITCH KIT 84-98 CM
    TRAILER HITCH KIT 84-98 CM
    original trailer hitch for garden tractors with 84-98 cm cutting decks. Use it all year round to extend the functions of your garden tractor.
  4. WINTER REAR WHEELS 18
    WINTER REAR WHEELS 18"
    18" rear winter tyre kit for garden tractors.
  5. SNOW TYRES SPIKES
    SNOW TYRES SPIKES
    Snow tyre studs for garden tractors, including front-cut models.
  6. SNOW CHAINS 18
    SNOW CHAINS 18"
    Snow chains for 18" wheels on garden tractors.
  7. POLY ROLLER 36
    POLY ROLLER 36"
    36" plastic roller accessory for garden tractors.
  8. SNOW BLADE 107 CM
    SNOW BLADE 107 CM
    STIGA original winter accessory, suitable for all garden tractors and ideal to clear big piles of snow from walk- and driveways.
  9. PROTECTIVE COVER
    PROTECTIVE COVER
    large protective cover for garden tractors and riders. Ideal to protect your machine from dust and humidity, when not in use.
  10. POLY ROLLER 23
    POLY ROLLER 23"
    Plastic roller for garden tractors, including front cut ride-on mowers.
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