AT4 84 HA

The AT4 84 HA comes with an 84cm cutter-deck and is powered by a high-performance 414cc STIGA single-cylinder engine. It features a hydrostatic transmission and collects clippings in a spacious 200-litre catcher. Optional mulch-kit available.
  • check Can collect up to 200 L cut grass
  • check Reliable and strong STIGA single-cylinder engine
  • check 84 cm cutting deck allows you to easily manage gardens up to 3500 m2
  • check Choose among 7 possible cutting height settings, to better fit your lawn's needs
  • check Effortless blade engagement through electromagnetic PTO clutch
With the Alpina AT4 84 HA Lawn Tractor, you’ll get powerful performance, excellent versatility and superior driving-comfort, all at an affordable price!
Delivering that powerful performance is a 414cc STIGA ST400 single-cylinder four-stroke motor that’s rated at a substantial 6.3 kW; and which will prove quiet, clean, smooth and economical in operation, thanks to Alpina’s overhead-valve technology.
The AT4 84 HA has a foot-pedal-controlled hydrostatic drive; a desirable feature that enables you to control the ground-speed much like you would with an automatic-transmission car - the more pressure you apply to the pedal, the faster you’ll go!
A front-mounted bumper works to prevent engine-damage in the event of accidental impact; while an electromagnetic power-take-off clutch makes starting and stopping the blades an effort-free process.
Offering three mowing-modes - bagging; rear-discharge; mulching - and seven preset cutting-heights, the flexible AT4 84 HA can be configured to produce fantastic results, no matter what grass-conditions you’re faced with.
It’s equipped with bright but energy-efficient LED headlights, so it can be safely driven when the ambient light’s poor; and it benefits from a series of gauge-wheels that ensure the edges and corners of the deck won’t mark the turf when you’re executing turns on uneven ground.
This model has a relatively compact 84cm working-width and comes with a largest-in-class 200-litre collector.
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Short DescriptionThe AT4 84 HA comes with an 84cm cutter-deck and is powered by a high-performance 414cc STIGA single-cylinder engine. It features a hydrostatic transmission and collects clippings in a spacious 200-litre catcher. Optional mulch-kit available.
EAN/UPC8008984851344
Unique selling point 04Choose among 7 possible cutting height settings, to better fit your lawn's needs
Unique selling point 05Effortless blade engagement through electromagnetic PTO clutch
Unique selling point 01Can collect up to 200 L cut grass
Unique selling point 0384 cm cutting deck allows you to easily manage gardens up to 3500 m2
Unique selling point 02Reliable and strong STIGA single-cylinder engine
Key features 1 descriptionThanks to the capacious 200L grass collector, you can cut and collect for long sessions, without having to stop to empty the bag.
Key features 1 titleLargest-in-class collector
Key features 2 titleStart cutting!
Key features 2 descriptionSimply push a button and get mowing!
Key features 3 titleYou can always see what you are doing
Key features 3 descriptionThanks to the powerful front LED lights, you can continue mowing, even with low lights conditions.
Award 3 logono_selection
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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 tractor lawn mower 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
Power6.3 kW
Power sourcePetrol
Engine BrandSTIGA
Engine modelST 400 Powered by STIGA
Displacement414 cm³
Engine rotation speed2400 rpm
Battery Voltage12 V
ChokeManual
Engine coolingAir
Fuel tank capacity6 l
Maximum working area3500.000000
Cutting methodCollecting
Minimum uncut radius80 cm
Cutting width84 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 capacity200 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)6.37
Max vibration on driver's seat (m/s2)1.06
Guaranteed sound power level (LwA) - dB(A)100
Pack weight230.5 kg
Product length2338 mm
Product width880 mm
Product height1100 mm
Product weight167.000000
SKU2T2100404/A22
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Key features

Product details and specs

With the Alpina AT4 84 HA Lawn Tractor, you’ll get powerful performance, excellent versatility and superior driving-comfort, all at an affordable price!
Delivering that powerful performance is a 414cc STIGA ST400 single-cylinder four-stroke motor that’s rated at a substantial 6.3 kW; and which will prove quiet, clean, smooth and economical in operation, thanks to Alpina’s overhead-valve technology.
The AT4 84 HA has a foot-pedal-controlled hydrostatic drive; a desirable feature that enables you to control the ground-speed much like you would with an automatic-transmission car - the more pressure you apply to the pedal, the faster you’ll go!
A front-mounted bumper works to prevent engine-damage in the event of accidental impact; while an electromagnetic power-take-off clutch makes starting and stopping the blades an effort-free process.
Offering three mowing-modes - bagging; rear-discharge; mulching - and seven preset cutting-heights, the flexible AT4 84 HA can be configured to produce fantastic results, no matter what grass-conditions you’re faced with.
It’s equipped with bright but energy-efficient LED headlights, so it can be safely driven when the ambient light’s poor; and it benefits from a series of gauge-wheels that ensure the edges and corners of the deck won’t mark the turf when you’re executing turns on uneven ground.
This model has a relatively compact 84cm working-width and comes with a largest-in-class 200-litre collector.

Technical specs

General info
EAN/UPC8008984851344
SKU2T2100404/A22
Cutting system
Cutting methodCollecting
Minimum uncut radius80 cm
Cutting width84 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 weight230.5 kg
Product length2338 mm
Product width880 mm
Product height1100 mm
Product weight167 kg
Power
Battery capacity18 Ah
Power6.3 kW
Power sourcePetrol
Engine BrandSTIGA
Engine modelST 400 Powered by STIGA
Displacement414 cm³
Engine rotation speed2400 rpm
Battery Voltage12 V
ChokeManual
Engine coolingAir
Fuel tank capacity6 l
Maximum working area3500 ㎡
Drive system
TractionRear-wheel drive
Equipment
Collector emptyingManual
Collector capacity200 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)6.37
Max vibration on driver's seat (m/s2)1.06
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 tractor lawn mower 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
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    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 84 CM
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    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
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    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
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  5. SNOW TYRES SPIKES
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