AT3 108 HA

A side-discharge and mulch-capable lawn tractor with a 108cm cut, a 432 cc STIGA ST 450 single-cylinder engine and a hydrostatic drive. Quality features include an electromagnetic blade-clutch and large, high-traction rear wheels. Mulching-kit optional.
  • check 108 cm cutting deck and strong-built side discharge funnel to manage lawns up to 6500 m2.
  • check Equipped with powerful STIGA single-cylinder engine.
  • check Simply choose among 7 possible cutting height settings, to fit your lawn's needs.
  • check Blades can be easily engaged thanks to PTO electromagnetic clutch.
  • check Easy speed management, thanks to pedal-operated hydrostatic transmission.
Expansive areas of overgrown, out-of-control grass can be quickly and efficiently tamed with this 108cm side-discharge garden tractor from Alpina!
It might be a substantial machine, but the Alpina AT3 108 HA is nevertheless highly maneuverable, with its infinitely adjustable hydrostatic transmission enabling precision ground-speed control and ensuring you’ll find it much easier to work around obstacles than you would with a stop-start manually-driven model.
The AT3 108 HA isn’t just for long growth - with the purchase and fitting of the optional mulch-plug, you’ll be able to achieve a beautifully neat finish on a well-maintained formal lawn.
Alpina’s provision of seven preset heights-of-cut means you’ll be able to manage a diverse range of conditions; while large wheels provide high-grip traction in damp weather and on muddy surfaces.
Thanks to an electromagnetic PTO clutch, engaging the blades on the AT3 108 HA couldn’t be easier.
Power comes from a large-displacement 432cc STIGA ST 450 single-cylinder engine with fuel-saving, emission-limiting and noise-reducing overhead-valve (OHV) technology.
Also featured is a front bumper for peace of mind in terms of impact resistance; and twin headlights that make it possible to continue working long into the evening if necessary.
More Information
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Short DescriptionA side-discharge and mulch-capable lawn tractor with a 108cm cut, a 432 cc STIGA ST 450 single-cylinder engine and a hydrostatic drive. Quality features include an electromagnetic blade-clutch and large, high-traction rear wheels. Mulching-kit optional.
EAN/UPC8008984860667
Unique selling point 04Blades can be easily engaged thanks to PTO electromagnetic clutch.
Unique selling point 01108 cm cutting deck and strong-built side discharge funnel to manage lawns up to 6500 m2.
Unique selling point 03Simply choose among 7 possible cutting height settings, to fit your lawn's needs.
Unique selling point 05Easy speed management, thanks to pedal-operated hydrostatic transmission.
Unique selling point 02Equipped with powerful STIGA single-cylinder engine.
Key features 1 titleYou can face any situation.
Key features 1 descriptionIdeal for long grass, the side-discharge deck lays-out clippings in tidy rows to the tractor’s right-hand side.
Key features 2 titlePowerful and smooth.
Key features 2 descriptionHigh-performance STIGA engine - enjoy smooth operation and powerful torque.
Key features 3 titleEnjoy the ride.
Key features 3 descriptionControl the ground-speed in infinite increments using a foot-pedal and experience unrivalled maneuverability. Ergonomic steering wheel will make your ride even more comfortable.
Key features 4 titleGet mowing.
Key features 4 descriptionSimply push a button and get mowing!
Key features 5 titleHow tall should your grass be?
Key features 5 descriptionYou can easily choose among 7 pre-set cutting heights, from 25 to 80 mm, depending on your lawn's needs...and yours!
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Certification CE logo/f/8/f8d026f1506d1d8196ac0ce4831a0ede77609710_CE_ecommerce_1673.jpg
Certification EAC logo/8/0/80727ed05eda3ded09f19431f242bf025ddf1b46_EAC_ecommerce_619.jpg
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 1 questionWhat is the proper way to clean the lawn tractor after mowing the grass?
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 machine 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 machine 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 riding tractor be equipped with?
FAQ 6 answerThe tractor mower 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.
Power7.5 kW
Battery capacity18 Ah
Power sourcePetrol
Engine BrandSTIGA
Engine modelST 450 Powered by STIGA
Displacement432 cm³
Engine rotation speed2800 rpm
Battery Voltage12 V
ChokeManual
Engine coolingAir
Fuel tank capacity6 l
Suggested working area6000.000000
Minimum uncut radius65 cm
Cutting width108 cm
Reverse mowingYes
Blade rotationUntimed
Cutting height adjustmentManual with lever
Cutting height positions7 positions
Cutting height range25 - 80 mm
Number of blades2
Blade typeMulching
Additional cutting methodMulching
Blade engagement typeElectric
TractionRear-wheel drive
Transmission methodPedal-operated
Transmission typeHydrostatic
Steering wheelAlpina ergonomic
Seat typeAlpina smart with low back support
Seat adjustmentScrews
DashboardNo
Front wheel size15x6.00-6
Rear wheel size18x8.50-8
Hour meterNo
HeadlightsConventional
Cruise controlNo
BumperYes
Washing linkYes
Storage compartmentYes
Cup holderYes
Pivoting front axleYes
Antiscalp wheels2
Safety systemSeat with Safety Contact Breaker
Mulching kitOptional
Battery chargerOptional
Trailer hitch kitOptional
Measured sound power level dB(A)99
Max vibration on steering wheels (m/s2)3
Guaranteed sound power level (LwA) - dB(A)100
Max vibration on driver's seat (m/s2)1.2
Measured sound pressure level at operator ear dB(A)87
Pack weight207.7 kg
Product length1726 mm
Product width1315 mm
Product height1100 mm
Product weight169.000000
SKU2T1200404/A23
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Key features

Product details and specs

Expansive areas of overgrown, out-of-control grass can be quickly and efficiently tamed with this 108cm side-discharge garden tractor from Alpina!
It might be a substantial machine, but the Alpina AT3 108 HA is nevertheless highly maneuverable, with its infinitely adjustable hydrostatic transmission enabling precision ground-speed control and ensuring you’ll find it much easier to work around obstacles than you would with a stop-start manually-driven model.
The AT3 108 HA isn’t just for long growth - with the purchase and fitting of the optional mulch-plug, you’ll be able to achieve a beautifully neat finish on a well-maintained formal lawn.
Alpina’s provision of seven preset heights-of-cut means you’ll be able to manage a diverse range of conditions; while large wheels provide high-grip traction in damp weather and on muddy surfaces.
Thanks to an electromagnetic PTO clutch, engaging the blades on the AT3 108 HA couldn’t be easier.
Power comes from a large-displacement 432cc STIGA ST 450 single-cylinder engine with fuel-saving, emission-limiting and noise-reducing overhead-valve (OHV) technology.
Also featured is a front bumper for peace of mind in terms of impact resistance; and twin headlights that make it possible to continue working long into the evening if necessary.

Awards and Certifications

Awards and Certifications

AT3 108 HA

Technical specs

General info
EAN/UPC8008984860667
SKU2T1200404/A23
Cutting system
Minimum uncut radius65 cm
Cutting width108 cm
Reverse mowingYes
Blade rotationUntimed
Cutting height adjustmentManual with lever
Cutting height positions7 positions
Cutting height range25 - 80 mm
Number of blades2
Blade typeMulching
Additional cutting methodMulching
Blade engagement typeElectric
Transmission
Transmission methodPedal-operated
Transmission typeHydrostatic
Tools kit
Mulching kitOptional
Battery chargerOptional
Trailer hitch kitOptional
Overall dimensions
Pack weight207.7 kg
Product length1726 mm
Product width1315 mm
Product height1100 mm
Product weight169 kg
Power
Power7.5 kW
Battery capacity18 Ah
Power sourcePetrol
Engine BrandSTIGA
Engine modelST 450 Powered by STIGA
Displacement432 cm³
Engine rotation speed2800 rpm
Battery Voltage12 V
ChokeManual
Engine coolingAir
Fuel tank capacity6 l
Suggested working area6000 ㎡
Drive system
TractionRear-wheel drive
Equipment
Steering wheelAlpina ergonomic
Seat typeAlpina smart with low back support
Seat adjustmentScrews
Front wheel size15x6.00-6
Rear wheel size18x8.50-8
HeadlightsConventional
BumperYes
Washing linkYes
Storage compartmentYes
Cup holderYes
Pivoting front axleYes
Antiscalp wheels2
Safety systemSeat with Safety Contact Breaker
Vibration and noise data
Measured sound power level dB(A)99
Max vibration on steering wheels (m/s2)3
Guaranteed sound power level (LwA) - dB(A)100
Max vibration on driver's seat (m/s2)1.2
Measured sound pressure level at operator ear dB(A)87

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 machine 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 machine 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 riding tractor be equipped with?

    The tractor mower 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.

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