Description
The Mountfield 1638H Twin Lawn Tractor is a great piece of kit – a twin cylinder engine on a 98 cm twin blade deck.
Powered by a twin cylinder Stiga 586 cc twin engine (10.04kW @2600 rpm) with hydrostatic transmission, this garden tractor is a real pleasure to use with forward and reverse speed controlled simply through the use of a foot pedal.
The 1638H Twin features a 98cm twin blade cutter deck with anti-scalp wheels that provide an excellent finish. Light steering and a tight turning circle make it easy to manoeuvre around trees, borders and garden furniture with the minimum of effort. All Mountfield garden tractors cut wider than the wheel width, which means there is little trimming left to do after the lawns have been mown.
Grass clippings are blown into the large 240 litre rear mounted collector and a buzzer sounds to notify the driver when it is full and needs emptying – and that is easy to do without leaving the driver’s seat. Or, you can choose to mulch using the mulching plug that is included; mulching grass is a great feature and not only saves you time but provides a natural fertiliser to your lawn. Blades are engaged and disengaged at the flick of a switch through an electronic clutch
A deck wash facility means keeping the deck clean couldn’t be simpler; just attach a hose to the snap-on connector, turn on the water and engage the blades. Water blasts around beneath the deck washing it clean – job done!
A stylish front bumper and mulching plug are included as standard; a tow hitch and a range of additional accessories are available as optional extras, making this tractor extremely versatile.
Click to see all of our Mountfield lawn tractors.

Hydrostatic transmission; Forward and reverse speed is controlled by simply pressing a foot pedal, similar to driving an automatic car.

Mulching function:
Grass clippings are recycled back into the soil, returning valuable nutrients and saving you time and money!
Specification
Power Source | Petrol |
Number of Cylinders | 2 |
Engine Brand | STIGA |
Engine Model | ST 550 |
Capacity | 586 cc |
Net Power Output | 10.04kW @2600 rpm |
Battery Voltage | 12V |
Battery Capacity | 18 Ah |
Choke | Manual |
Engine Cooling | Air |
Fuel tank capacity | 6 L |
Cutting Method | Collecting |
Uncut Radius | 70 cm |
Cutting Width | 98 cm |
Reinforced Cutting Deck | No |
Blade Rotation | |
Cutting height adjustment | Manual with lever |
Cutting height positions | 7 positions |
Cutting height range | 25 – 80 mm |
Blade engagement type | Electric |
Number of blades | 2 |
Reverse mowing | Yes |
Additional cutting method | Rear Discharge, Mulching |
Mulching kit | Included |
Enable Product | Enabled |
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SKU | 2T2630483/M21 |
EAN | 8008984842335 |
Product Name | 1638H Twin |
Product Name Description | Collecting Garden Tractor |
Homologation name | MPNS 98 Hydro |
Power Source | Petrol |
Number of Cylinders | 2 |
Engine Brand | STIGA |
Engine Model | ST 550 |
Capacity | 586 cc |
Net power output | 10.04kW @2600 rpm |
Battery Voltage | 12V |
Battery Capacity | 18 Ah |
Choke | Manual |
Engine Cooling | Air |
Fuel Tank Capacity | 6 L |
Cutting Method | Collecting |
Minimum uncut radius | 70 cm |
Cutting width | 98 cm |
Reinforced cutting deck | No |
Blade rotation | Untimed |
Cutting height adjustment | Manual with lever |
Cutting height positions | 7 positions |
Cutting height range | 25 – 80 mm |
Blade engagement type | Electric |
Number of blades | 2 |
Reverse mowing | Yes |
Additional cutting method | Rear Discharge, Mulching |
Mulching kit | Included |
Traction | Rear-wheel drive |
Transmission type | Hydrostatic |
Transmission method | Pedal-operated |
Collector type | Textile |
Collector capacity | 240 L |
Seat type | Mountfield classic |
Seat adjustment | Screws |
Dashboard | Yes with LED |
Steering wheel | Mountfield ergonomic |
Front wheel size | 15×5.00-6 |
Rear wheel size | 18×8.50-8 |
Hour meter | No |
Cruise control | No |
Headlights | Conventional |
Cast iron front axle | No |
Bumper | Yes |
Washing link | Yes |
Cup holder | Yes |
Pivoting front axle | Yes |
Antiscalp wheels | 2 |
Safety system | Seat with Safety Contact Breaker |
Guaranteed sound power level (LwA) – dB(A) | 100 |
Max vibration on driver’s seat (m/s2) | 0.7 |
Max vibration on steering wheel (m/s2) | 8.2 |
Measured sound power level dB(A) | 100 |
Measured sound pressure level at operator ear dB(A) | 86 |
Pack dimensions (LxWxH) | 1700 x 1120 x 837 |
Pack weight | 235.5 kg |
Product weight | 161 kg |
Product length | 2340 mm |
Product width | 1098 mm |
Product height | 1020 mm |
Battery charger | Single standard |
Trailer hitch kit | Optional |
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