Roper lawn tractors
Roper T633 RT-16T Hydro
The Roper T633 RT-16T Hydro is a garden tractor produced from 1974 to 1978 by Roper in Orangeburg, South Carolina, USA. It features a 16 hp Onan 660cc 2-cylinder gasoline engine with an air-cooled horizontal-shaft opposed twin design. The tractor uses a belt-driven hydrostatic transmission with infinite forward and reverse speeds. It has two-wheel drive, manual steering, and an open operator station. Tires are sized 16x6.50-8 front and 23x10.50-12 rear. Attachments include 42" and 48" mid-mount mower decks with 3-blade right-discharge designs. Electrical system is 12 volts with negative ground.
Power-
Founded-
ModelT633
Technical Specifications
Detailed specifications and technical data for Roper T633 RT-16T Hydro
Engine
| Type | gasoline |
|---|---|
| Model | Onan BF-MS |
| Cooling | air-cooled horizontal-shaft opposed twin |
| Starter | electric |
| Cylinders | 2-cylinder |
| Bore/Stroke | 3.125x2.625 inches (79 x 67 mm) |
| Displacement | 660 cc (40.3 ci) |
| Power (gross) | 16 hp (11.9 kW) |
| Starter volts | 12 |
Variants
| T632 | gear |
|---|---|
| T633 | hydro |
Electrical
| Ground | negative |
|---|---|
| Battery volts | 12 |
Mechanical
| Drive | Two-wheel drive |
|---|---|
| Steering | Manual steering |
| Operator station | Open operator station |
Production
| Type | Garden tractor |
|---|---|
| Built in | Orangeburg, South Carolina, USA |
| Manufacturer | Roper |
| Years produced | 1974 - 1978 |
Attachments
| 42" mid-mount mower deck | Roper TT21, 42 inches (106 cm), 3-blade, right-discharge |
|---|---|
| 48" mid-mount mower deck | Roper TT22, 48 inches (121 cm), 3-blade, right-discharge |
Transmission
| Type | belt-driven hydrostatic |
|---|---|
| Gears | infinite forward and reverse |
Dimensions & Tires
| Rear tire | 23x10.50-12 |
|---|---|
| Front tire | 16x6.50-8 |