Ariens lawn tractors RM728
Power
7 hp
Production
1978-1980
Engine
Gasoline, 1-cylinder
Transmission
Disc-O-Matic
Weight
375 lbs [170 kg]
Drive
2WD
Introduction
Ariens RM728 Riding Lawn Mower
The Ariens RM728 is a compact riding lawn mower produced between 1978 and 1980 in Brillion, Wisconsin, USA. Designed specifically for residential lawn maintenance, this machine represents the equipment standards of late 1970s utility tractors.
Powertrain and Engine
The tractor is powered by a single-cylinder, air-cooled Tecumseh VM70 gasoline engine with a vertical shaft configuration. It features a displacement of 281 cc (17.16 ci) and produces 7 hp (5.2 kW). The engine is equipped with a manual recoil starter, with an optional electric starting system available for increased convenience.
Transmission and Drivetrain
The RM728 utilizes an Ariens 'Disc-O-Matic' transmission system, which relies on a friction disc mechanism. This setup provides the operator with 6 forward speeds and 1 reverse gear, allowing for adjustable ground speed. The tractor operates on a two-wheel-drive system.
Operational Controls and PTO
For implement engagement, the tractor is equipped with an independent mid-mounted Power Take-Off (PTO) system. The clutch mechanism is operated via an idler pulley. Steering is manual, and the machine is brought to a stop using mechanical band brakes.
Dimensions and Chassis
The machine features a compact footprint with a wheelbase of 45.5 inches (115 cm) and a total length of 62.5 inches (158 cm). The height to the steering wheel is 39 inches (99 cm), and the unit has a shipping weight of 375 lbs (170 kg). It is fitted with specialized lawn and turf tires, measuring 4.10-3.50x4 on the front and 4.80-4.00x8 on the rear, designed to minimize soil compaction.
Conclusion
The Ariens RM728 is a straightforward, mechanical riding mower suited for standard lawn care tasks. Its combination of a 28-inch mower deck and a simple, gear-driven transmission makes it a practical choice for operators prioritizing ease of maintenance and compact storage.
Production Information of Ariens lawn tractors, RM728
- Riding lawn mower
- Built in Brillion, Wisconsin, USA
| Manufacturer | Ariens |
|---|
Dimension and Tires Information of Ariens lawn tractors, RM728
| Wheelbase | 45.5 inches [115 cm] |
|---|---|
| Shipping weight | 375 lbs [170 kg] |
| Length | 62.5 inches [158 cm] |
| Height (steering wheel) | 39 inches [99 cm] |
| Lawn/turf front | 4.10-3.50x4 |
|---|---|
| Lawn/turf rear | 4.80-4.00x8 |
Engine Specifications of Ariens lawn tractors, RM728
- Tecumseh VM70
- Air-cooled vertical-shaft
- Gasoline
- 1-cylinder
| Power | 7 hp [5.2 kW] |
|---|---|
| Displacement | 281 cc [17.16 ci] |
| Starter type | Manual recoil |
| Bore/Stroke | 2.94x2.53 inches [75 x 64 mm] |
| Bore/Stroke(optional) | Electric |
Transmission Information of Ariens lawn tractors, RM728
Transmission variants 1
| Transmission | Disc-O-Matic |
|---|---|
| Type | Fiction disc |
| Gears | 6 forward and 1 reverse |
Mechanical Specs of Ariens lawn tractors, RM728
- Two-wheel drive
- Open operator station.
- Manual steering
- Mechanical band brakes
Power Information of Ariens lawn tractors, RM728
| Mid PTO | Independent |
|---|---|
| Clutch | Idler pulley |
Where it sits
With 7 HP, the Ariens lawn tractors RM728 sits between SRM626 (6 HP) and Emperor 8 (8 HP) in Ariens lawn tractors's range. Its power puts it in the 22th percentile of 1970s models in our database (1008 machines).
Frequently asked questions
How much horsepower does the Ariens lawn tractors RM728 have?
The Ariens lawn tractors RM728 delivers 7 HP.
What years was the Ariens lawn tractors RM728 produced?
The Ariens lawn tractors RM728 was produced in 1978-1980.
What engine does the Ariens lawn tractors RM728 have?
The Ariens lawn tractors RM728 is powered by a Gasoline, 1-cylinder engine.
What transmission does the Ariens lawn tractors RM728 use?
The Ariens lawn tractors RM728 uses a Disc-O-Matic transmission.
How much does the Ariens lawn tractors RM728 weigh?
The Ariens lawn tractors RM728 weighs 375 lbs [170 kg].
Is the Ariens lawn tractors RM728 4WD?
The Ariens lawn tractors RM728 is available in 2WD.