Bolens lawn tractors
Bolens 3112G ST120
The Bolens 3112G ST120 is a 1987 garden tractor from the Suburban Series, built in Port Washington, Wisconsin, USA. It features a 12 hp Briggs & Stratton 465cc 1-cylinder gasoline engine with electric start and a 5-speed Peerless 801 belt-driven gear transmission. The tractor has a wheelbase of 45 inches, length of 69 inches, width of 34.5 inches, and height of 42.5 inches. It is two-wheel drive with manual steering and disc brakes, and includes a mid PTO with an electric clutch. Attachments include a 36" mid-mount mower deck, snowblower, and blade options. Electrical system is 12 volts with a 45 AH battery and negative ground.
Power-
Founded-
Model3112G ST120
Technical Specifications
Detailed specifications and technical data for Bolens 3112G ST120
Engine
| Type | gasoline |
|---|---|
| Model | Briggs & Stratton 281707 |
| Cooling | air-cooled vertical-shaft |
| Starter | electric |
| Cylinders | 1-cylinder |
| Fuel tank | 5 gal (18.9 L) |
| Bore/Stroke | 3.44x3.06 inches (87 x 78 mm) |
| Displacement | 465 cc (28.42 ci) |
| Oil capacity | 1.5 qts (1.4 L) |
| Power (gross) | 12 hp (8.9 kW) |
| Starter volts | 12 |
Overview
| Year | 1987 |
|---|---|
| Series | Suburban Series |
| Built in | Port Washington, Wisconsin, USA |
| Category | Garden tractor |
Dimensions
| Width | 34.5 inches (87 cm) |
|---|---|
| Height | 42.5 inches (107 cm) |
| Length | 69 inches (175 cm) |
| Rear tire | 20x8.00-10 |
| Wheelbase | 45 inches (114 cm) |
| Front tire | 15x6.00-6 |
Electrical
| Ground | negative |
|---|---|
| Battery AH | 45 |
| Battery volts | 12 |
Mechanical
| Drive | Two-wheel drive |
|---|---|
| Brakes | Disc brakes |
| Steering | Manual steering |
| Operator station | Open operator station |
References
| Publication | High Performance published in 1987, by Bolens |
|---|
Attachments
| Overview | 36" mid-mount mower deck, Snowblower, Blade |
|---|---|
| 42" Blade | Bolens, front-mount, 42 inches width (106 cm) |
| 36" Mower deck | mid-mount Bolens, 2-blade, Cutting width 36 inches (91 cm) |
| 38" Snow blower | Bolens, 38 inches width (96 cm), single-stage, front-mount |
| 38" Snow blower (two-stage) | Bolens, 38 inches width (96 cm), two-stage, front-mount |
Transmission
| Type | belt-driven gear |
|---|---|
| Gears | 5 forward and 1 reverse |
| Model | Peerless 801 |
| Speeds | 5-speed gear |
Serial Numbers
| Location | Serial number tag on the rear fender, under the tractor seat, on the left side. |
|---|
Power Take-off (PTO)
| PTO | independent |
|---|---|
| Type | Mid PTO |
| Clutch | electric |