Allis-Chalmers 312 Specs ( 1971-1973 )
Overview
The Allis-Chalmers 312 is a garden tractor manufactured between 1971 and 1973 in Lexington, South Carolina, featuring a 12HP Kohler single-cylinder gasoline engine. Weighing between 804 and 845 pounds, the unit was offered with manual steering and multiple transmission configurations including Vari-Shift and hydrostatic drives.
Ideal Applications
Engine and Power Configuration:
The tractor is equipped with a 476cc air-cooled Kohler gasoline engine rated at 3600 RPM with a 12-volt alternator charging system and a 2.25-gallon fuel tank.
Transmission and Drive Variants:
Configuration options include a 21-speed Vari-Shift transmission, a hydrostatic drive with infinite gears, and model variants such as the 312D featuring electric lift and PTO.
Chassis and External Dimensions:
This model features a 48.1-inch wheelbase with 16-6.50x8 front tires and 23-10.50x12 rear tires, maintaining a ground clearance of 6 inches at the rear axle and 8 inches at the front axle.
Production
| Description | Garden tractor / Built in Lexington, South Carolina, USA / The Allis-Chalmers 312 can be referenced in the Simplicity catalog by codes 1600046, 1600047 (electric pto/lift), and 1600048 (hydrostatic). |
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| Manufacturer | Allis Chalmers |
Engine
| Description | 12HP Kohler 476cc 1-cyl gasoline |
|---|---|
| Fuel tank | 2.25 gal (8.5 L) |
| Bore/Stroke | 3.38x3.25 inches (86 x 83 mm) |
| Description | Kohler / gasoline / 1-cylinder / air-cooled |
| Displacement | 476 cc (29.07 ci) |
| Power | 12 hp (8.9 kW) |
| Rated RPM | 3600 |
| Starter volts | 12 |
| Oil capacity | 2 qts (1.9 L) |
| Oil change | 25 h |
Transmission
| Gears | 21 forward and 7 reverse / infinite forward and reverse |
|---|---|
| Transmission | Vari-Shift |
| Type | hydrostatic |
| Description | hydrostatic |
| Transmission type | 21-speed |
| Description | hydrostatic |
| Transmission type | 21-speed |
Mechanical
| Cab | Open operator station. |
|---|---|
| Drive type | Two-wheel drive |
| Steering | manual |
PTO
| Clutch | manual |
|---|---|
| Front PTO | independent |
| Front PTO Type | 3600 |
Electrical
| Battery volts | 12 |
|---|---|
| Charging amps | 15 |
| Charging system | alternator |
| Ground | negative |
Dimensions & Tires
| Lawn/turf front | 16-6.50x8 |
|---|---|
| Lawn/turf rear | 23-10.50x12 |
| Clearance (drawbar) | 7.5 inches (19 cm) |
| Clearance (front axle) | 8 inches (20 cm) |
| Clearance (rear axle) | 6 inches (15 cm) |
| Front tread | 28 inches (71 cm) |
| Height (steering wheel) | 43 inches (109 cm) |
| Length | 74 inches (187 cm) |
| Rear tread | 30.7 inches (77 cm) |
| Weight | 804 lbs (364 kg) |
| Wheelbase | 48.1 inches (122 cm) |
| Width | 38.5 inches (97 cm) |
| Front tire | 16-6.50x8 |
| Rear tire | 23-10.50x12 |
| Weight | 804 to 845 pounds |
| Wheelbase | 48.1 inches (122 cm) |
312 Serial Number Location
| Description | Serial number plate on the left side of the tractor, to the side of the dashboard. |
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Allis Chalmers 312 attachments
| Description | 42" mid-mount mower deck / 48" mid-mount mower deck |
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References
| Description | Operator's Manual 300 Series Tractor (TP-1503) published in 1972 |
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Variants
| 312 | manual lift/PTO |
|---|---|
| 312D | electric lift/PTO |
| 312H | hydrostatic |