Simplicity lawn tractors
Simplicity 7790H
The Simplicity 7790H is a garden tractor built by Simplicity in Port Washington, Wisconsin, USA. It was originally priced at $6,099 in 1985. This model is the same as the Allis Chalmers 920. It features an 18.5 hp Lombardini 790cc 2-cylinder air-cooled diesel engine, hydrostatic transmission with infinite forward and reverse speeds, and two-wheel drive with spur gear final drives. The tractor has manual steering with optional power steering, mechanical band brakes, and an open operator station. Electrical system includes a 12-volt battery with 500 CCA and a 16-amp flywheel alternator charging system. Dimensions include a 48.1 inch wheelbase, 70 inch length, and 689 lbs weight. Attachments available include mid-mount mower decks, blades, and snow blowers.
Power-
Founded-
Model7790H
Technical Specifications
Detailed specifications and technical data for Simplicity 7790H
Engine
| Type | diesel |
|---|---|
| Model | Lombardini 10LD400-2 |
| Power | 18.5 hp (13.8 kW) |
| Cooling | air-cooled |
| Starter | electric |
| Cylinders | 2-cylinder |
| Fuel tank | 3 gal (11.4 L) |
| Rated RPM | 2800 |
| Air cleaner | dry |
| Bore/Stroke | 3.386x2.677 inches (86 x 68 mm) |
| Displacement | 790 cc (48.21 ci) |
| Starter volts | 12 |
| Oil change interval | 300 h |
Electrical
| Ground | negative |
|---|---|
| Battery CCA | 500 |
| Battery Group | 24 |
| Battery volts | 12 |
| Charging amps | 16 |
| Charging system | flywheel alternator |
Mechanical
| Drive | Two-wheel drive |
|---|---|
| Brakes | Mechanical band brakes |
| Steering | manual (power optional) |
| Final drives | spur gear |
| Operator station | Open operator station |
Production
| Built in | Port Washington, Wisconsin, USA |
|---|---|
| Manufacturer | Simplicity |
| Original price | $6,099 in 1985 |
Attachments
| 42" Blade | mid-mount, 42 inches width (106 cm), 9 inches height (22 cm), 74 lbs (33 kg) |
|---|---|
| 46" Blade | front-mount, 46 inches width (116 cm), 113 lbs (51 kg) |
| 36" Snow blower | front-mount, 36 inches width (91 cm), Clear height:19 inches (48 cm), 128 lbs (58 kg) |
| 42" Snow blower | front-mount, 42 inches width (106 cm), Total width:43.5 inches (110 cm), Clear height:19 inches (48 cm), 136 lbs (61 kg) |
| 42" mid-mount mower deck | 42 inches (106 cm), 3-blade, Cut height: 1.625 to 3.125 inch (4 to 7 cm), 146 lbs (66 kg) |
| 48" mid-mount mower deck | 48 inches (121 cm), Total width: 61 inches (154 cm), 3-blade, Cut height: 1.625 to 3.125 inch (4 to 7 cm), 158 lbs (71 kg) |
Transmission
| Type | belt-driven hydrostatic |
|---|---|
| Gears | infinite forward and reverse |
| Oil capacity | 3 qts (2.8 L) |
Tractor hitch
| Type | sleeve hitch (Optional. Part number 1600055.) |
|---|
Dimensions & Tires
| Width | 38.9 inches (98 cm) |
|---|---|
| Length | 70 inches (177 cm) |
| Weight | 689 lbs (312 kg) |
| Rear tire | 23-10.50x12 |
| Wheelbase | 48.1 inches (122 cm) |
| Front tire | 16-6.50x8 |
| Height (hood) | 35.7 inches (90 cm) |
| Height (steering wheel) | 39.7 inches (100 cm) |
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