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Mountfield 1643H - SD

The 1643H-SD Twin is a dedicated side discharge tractor with a 108cm twin-bladed deck. 
With extra power from the upgraded StigaST550 twin-cylinder engine makes even the toughest and largest areas a cinch to cut. It really is a lawn tractor perfect for all gardens up to 3-acres in size

  •  Powered by STIGA with an ST 550 585cc Twin cylinder engine
  •  108 cm cutting width
  •  Pedal operated hydrostatic transmission
  •  Seven Cutting height positions, 25 – 80 mm
  •  Blades engaged at the touch of a button
  •  Optional mulching plug and tow hitch available separately




Description Contact us

Product details and specs

The 1643H-SD Twin is a fantastic side discharge lawn tractor. Powered by a formidable Stiga ST550 585cc twin cylinder engine that is powerful to cut through the toughest of lawns. With no bulky collection basket present, it is also highly manoeuvrable.

The 108cm twin bladed cutting deck makes light work of large areas and the hydrostatic transmission, akin to the automatic transmission in cars, is slick. There are seven cutting heights all selected using one lever and a simple flick of a switch engages the blades.

As a dedicated side-discharge machine this mower is excellent when grass growth is fast, however, you could choose to mulch the clippings using a mulching plug/plate (available as an optional extra) that is simple to fit. When mulching, the clippings are finely cut and blown back down onto the lawn to decompose and return valuable nutrients to the soil.

Cleaning after use couldn’t be easier just connect your hose to the deck nozzle, turn on the water and engage the blades and you will quickly have a clean deck and blades ready for next time.
With a wide range of towed accessories available, the Tow Hitch available as an optional extra makes the 1643H-SD extremely versatile in all seasons.
And of course, the 1643H-SD Twin comes with a reassuring five-year extended warranty. (T&Cs apply)

Technical specs

EAN/UPC 8008984851887
SKU 2T1220483/M22

Cutting method Side discharge
Minimum uncut radius 65 cm
Cutting width 108 cm
Reverse mowing Yes
Blade rotation Untimed
Cutting height adjustment Manual with lever
Cutting height positions 7 positions
Cutting height range 25 - 80 mm
Number of blades 2
Blade type Mulching
Additional cutting method Mulching
Blade engagement type Electric

Transmission type Hydrostatic
Transmission method Pedal-operated

Mulching kit Optional
Battery charger Optional
Trailer hitch kit Optional

Pack weight 207.5 kg
Product length 1726 mm
Product width 1315 mm
Product height 1100 mm
Weight 159 kg

Power source Petrol
Battery capacity 18 Ah
Power 10.8 kW
Engine Brand STIGA
Engine model ST 550 Twin Powered by STIGA
Displacement 586 cm³
Engine rotation speed 2800 rpm
Battery Voltage 12 V
Choke Manual
Engine cooling Air
Fuel tank capacity 6 l
Maximum working area 3

Traction Rear-wheel drive

Steering wheel Mountfield ergonomic
Seat type Mountfield classic
Seat adjustment Screws
Front wheel size 15x5.00-6
Rear wheel size 18x8.50-8
Headlights Conventional
Bumper Yes
Washing link Yes
Storage compartment Yes
Cup holder Yes
Pivoting front axle Yes
Antiscalp wheels 2
Safety system Seat with Safety Contact Breaker

Measured sound pressure level at operator ear dB(A) 87
Measured sound power level dB(A) 99
Guaranteed sound power level (LwA) - dB(A) 100
Max vibration on steering wheels (m/s2) 3
Max vibration on driver's seat (m/s2) 1.2

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