Bolens lawn tractors
Bolens 1250
The Bolens 1250 is a garden tractor produced from 1967 to 1969 as part of the Large Frame Series. It features a 12.5 hp Wisconsin S12D 473cc 1-cylinder air-cooled gasoline engine, hydrostatic Eaton 12 transmission with infinite forward and reverse speeds, and two-wheel drive with manual steering. The tractor has a wheelbase of 49 inches, length of 72 inches, width of 38 inches, and height of 45 inches, weighing 975 lbs. It uses 5.70/5.00x8 front tires and 27x8.50-15 rear tires. Electrical system includes a 12-volt battery with a starter generator charging system. Optional attachments include a 48" mid-mount mower deck with hydraulic lift, a 42" front-mount snowblower, and a 54" front-mount blade.
Power12 hp
Founded48" deck
Model1250
Technical Specifications
Detailed specifications and technical data for Bolens 1250
Tires
| Ag rear | 27x8.50-15 |
|---|---|
| Lawn/turf rear | 27x8.50-15 |
| Lawn/turf front | 5.70/5.00x8 |
| Ag rear alternate | 26x12-12 |
Engine
| Type | gasoline |
|---|---|
| Model | Wisconsin S12D |
| Power | 12.5 hp |
| Cooling | air-cooled |
| Starter | electric |
| Cylinders | 1-cylinder |
| Rated RPM | 3600 |
| Power (kW) | 9.3 kW |
| Air cleaner | dry |
| Bore/Stroke | 3.50x3.00 inches |
| Displacement | 473 cc |
| Oil capacity | 2 qts |
| Sparkplug gap | 0.030 inches |
| Starter volts | 12 |
| Bore/Stroke (mm) | 89 x 76 mm |
| Oil capacity (L) | 1.9 L |
| Displacement (ci) | 28.86 ci |
| Sparkplug gap (mm) | 0.762 mm |
| Oil change interval | 50 h |
| Intake valve clearance | 0.007 inches (cold) |
| Exhaust valve clearance | 0.016 inches (cold) |
| Intake valve clearance (mm) | 0.178 mm |
| Exhaust valve clearance (mm) | 0.406 mm |
Overview
| Series | Large Frame Series |
|---|---|
| Category | Garden tractor |
| Model number | 197 |
| Production years | 1967 - 1969 |
Dimensions
| Width | 38 inches |
|---|---|
| Height | 45 inches |
| Length | 72 inches |
| Wheelbase | 49 inches |
| Width (cm) | 96 cm |
| Height (cm) | 114 cm |
| Length (cm) | 182 cm |
| Wheelbase (cm) | 124 cm |
| Shipping weight | 975 lbs |
| Ground clearance | 8.5 inches |
| Shipping weight (kg) | 442 kg |
| Ground clearance (cm) | 21 cm |
Electrical
| Ground | negative |
|---|---|
| Battery volts | 12 |
| Charging system | starter generator |
Mechanical
| Drive | Two-wheel drive |
|---|---|
| Steering | manual |
| Operator station | Open operator station |
Attachments
| Blade | 54 inches width, front-mount |
|---|---|
| Snowblower | 42 inches width, front-mount |
| 48" mid-mount mower deck | 48 inches cutting width, mid-mount Bolens, hydraulic lift |
Transmission
| Type | hydrostatic |
|---|---|
| Gears | infinite forward and reverse |
| Model | Eaton 12 |
| Oil capacity | 10 qts |
| Oil capacity (L) | 9.5 L |
Tractor hitch
| Rear Type | 0 (optional) |
|---|