Special SD 98 HD - Lawn tractor - Hydrostatic transmission - Side discharge

The petrol lawn tractor Special SD 98 HD is a machine designed for efficient maintenance of large grassy areas up to 5000 m².

The compact and robust structure, with a bright red hood and integrated lighting, ensures excellent visibility and resistance to weather conditions. The functional design is intended to offer operational comfort and ease of use, even during prolonged sessions.

This petrol lawn tractor is equipped with a STIGA ST 450 single-cylinder engine of 432 cc, air-cooled and petrol-powered. It guarantees a power of 7.5 kW and a pedal-operated hydrostatic transmission that allows smooth speed control without manual gear changes.

The 98 cm cutting deck is equipped with two winged rotating blades, electrically activated via a button, and anti-scalp wheels.

The machine features standard side discharge and mulching capability.

The seven cutting positions, adjustable from 25 to 80 mm, allow adaptation to lawn conditions. Among the features are an ergonomic steering wheel, adjustable seat, and larger rear wheels for better traction.

Distinctive features:

• STIGA ST 450 engine of 432 cc: designed to ensure reliability and long-lasting performance in intensive cutting activities.

• 98 cm deck with 2 rotating blades: ensures wide and uniform coverage even on large lawns.

• Pedal-operated hydrostatic transmission: simplifies speed control without the need for gear changes.

• Side discharge + mulching system: effectively manages cut grass, adapting to different needs.

• Improved ergonomics: adjustable seat, comfortable steering wheel, and easily accessible controls.

This petrol lawn tractor represents a reliable and functional solution for professional care of large green areas.

The engine mounted on this lawn tractor is an ST 450 Powered by Stiga.

Features:

Latest generation 4-stroke petrol engine with overhead valve "OHV" and anti-vibration system.

The engine is equipped with electric start with key

Detail of the large tank of 6 litres

Air filter detail

Nominal Power: 16 HP
The more correct term would be "Commercial Power", meaning the classic standard of power definition officially used until a few years ago by all the most renowned engine manufacturers.

* This data is still more widespread and advertised in the main commercial sales channels, although it is an increased figure compared to the actual power.

Effective Power: 10.05 HP (at a rotation speed of 2800 rpm)
Corresponds to the actual power expressed at the engine shaft. It is the one indicated as official in the manual or in the technical data of the engine manufacturer.

* This data can vary for the same engine model, depending on the rotation speed that the equipment manufacturer has decided to have the applied engine deliver.

Detail of the transmission.

Thanks to the new 2-pedal hydrostatic transmission, driving the tractor will be easy and intuitive. Everything can be controlled simply with the right foot resting on the pedal.

The operation is very simple: to move forward, just push the pedal with the toe. The tractor will advance based on the pressure applied. To engage reverse, just push the other end of the pedal with the heel.

As soon as the pedal is released, the machine stops and allows for safe operation.

Robust gears make the transmission difficult to break. The hydrostatic transmission is by nature much more modern and functional (although more expensive) than the traditional manual gear transmission. The latter, whenever the speed needs to be changed, forces the operator to stop, change gear (because all tractors with manual or mechanical transmission require the gear change to be done from a standstill), release the clutch, and start again at the desired speed. Certainly, if the speed needs to be changed multiple times (for example, in all those gardens where there are trees, pots, or any other kind of obstacle), the traditional gear transmission would be decidedly impractical. The hydrostatic transmission, on the other hand, allows for immediate speed changes, without ever stopping, in the utmost practicality, in a completely automatic manner, simply by varying the pressure on the pedal that operates this transmission.

The Special SD 98 HD lawn tractor offers two different cutting systems:

1- SIDE DISCHARGE (standard): the most traditional, the tractor cuts, leaving the grass on the lawn. System recommended for: large extensions for those who do not need to collect, for those who do not cut frequently and find themselves having to cut excessively grown grass, for which the collection or mulching system is no longer effective.

2- MULCHING (optional): a cutting system that shreds the cut grass leaving it on the lawn, pulverizing it to the point that it will almost seem as if it has been collected. This eliminates the problem of its disposal (reducing effort and drastically shortening the time spent cutting) and also, as it decomposes, it will subsequently transform into a nutrient for the lawn itself and into water (grass is made up of 80% water) thus ensuring a perfectly balanced biological cycle. However, it is useful to remember that, to ensure the absolute efficiency of the system, the lawn must still be irrigated, and the grass cut very often. The conversion from one system to the other is very easy.

Conversion: just apply the appropriate plug to the grass outlet under the deflector to activate the mulching cut.

The Special SD 98 HD lawn tractor is equipped with a 2-blade cutting deck.

Cutting deck width of 98 cm.

The deck of the tractor is floating, meaning it easily adapts to terrain variations (as long as they are not excessively harsh).

The blade engagement is electromagnetic and is controlled through the yellow button to the right of the steering wheel. This system works thanks to an electromagnetic clutch that allows easy and quick blade engagement.

An important feature of the tractor, often requested by most users, is the ability to cut grass even in reverse.

The cutting height can be adjusted in 7 different positions, which can vary from 25 to 80 mm. This adjustment is made via a specific lever located on the side of the machine.

The cutting deck also features two convenient anti-scalp wheels and a double washing connection, for quick blade cleaning through a small tube.

- Detail of the mulching blades

The controls and adjustments of the Special SD 98 HD lawn tractor are easy and intuitive:

• Blade rotation speed regulator
• Parking brake
• Ignition block with key
• Pedal brake
• Reverse cutting button
• Cutting height adjustment lever
• Pedal-operated hydrostatic transmission for forward and reverse
• Electromagnetic blade engagement with yellow button to the right of the steering wheel

Other features of the Special SD 98 H lawn tractor:

• Engine bonnet can be opened to allow cleaning and maintenance operations
• Adjustable comfort seat and foldable for maximum comfort during use
• Ergonomic steering wheel
• Robust front bull bar: prevents frontal impacts and protects the machine
• Rear wheels dimensions: 18 x 8.5-8
• Front wheels: 15 x 6.00-6
• Pivoting front axle: ensures excellent balance, stability, and driving comfort even on uneven terrain.
• Anti-scalp wheels
• Double connection for deck washing
• Storage compartment and cupholder
• Front lights
• 12V/18Ah battery hidden under the seat