Simplicity 7790H

The Simplicity 7790H is a tractor produced by Simplicity Lawn Tractors. It is equipped with a 790 cc 48.21 ci engine. The listed engine power is Diesel (listed): 18.5 hp / 13.8 kW. Transmission: infinite forward and reverse. Operating weight: 689 lbs 312 kg.

Overview

	Garden tractor	Garden tractor

Note: the Simplicity model 7790H is the same as the Allis Chalmers 920. The following data is from the 920 listing.

Production
Manufacturer	Simplicity
Garden tractor
Built in Port Washington, Wisconsin, USA
Original price was $6,099 in 1985

Simplicity 7790H Engine
18.5HP Lombardini 790cc 2-cyl diesel
Fuel tank	3 gal 11.4 L
Engine details ...

Simplicity 7790H Transmission
hydrostatic
Transmission details ...

Mechanical
Two-wheel drive
Final drives	spur gear
Steering	manual
	power optional
Mechanical band brakes
Open operator station.

Tractor hitch
Type	sleeve hitch *Optional. Part number 1600055.

Dimensions & Tires
Wheelbase	48.1 inches 122 cm
Weight	689 lbs 312 kg
Front tire	16-6.50x8
Rear tire	23-10.50x12
Full dimensions and tires ...

Links
SimpleTractors.com: information, photos and old advertising literature at SimpleTractors.com

Electrical
Ground	negative
Charging system	flywheel alternator
Charging amps	16
Battery CCA	500
Battery volts	12
Battery Group	24

Engine

Note: the Simplicity model 7790H is the same as the Allis Chalmers 920. The following data is from the 920 listing.

Engine Detail — 790 cc / 48.21 ci Diesel

Manufacturer	Lombardini 10LD400-2
Fuel Type	Diesel
Configuration	2-cylinder, air-cooled
Displacement	790 cc 48.21 ci
Bore/Stroke	3.386x2.677 inches 86 x 68 mm
Power	18.5 hp 13.8 kW
Air cleaner	dry
Rated RPM	2800
Starter	electric
Starter volts	12
Oil change	300 h

Transmission

Note: the Simplicity model 7790H is the same as the Allis Chalmers 920. The following data is from the 920 listing.

Transmission — infinite forward and reverse belt-driven hydrostatic

Type	belt-driven hydrostatic
Gears	infinite forward and reverse
Oil capacity	3 qts 2.8 L

Dimensions

Note: the Simplicity model 7790H is the same as the Allis Chalmers 920. The following data is from the 920 listing.

Simplicity 7790H Tires
Lawn/turf front	16-6.50x8
Lawn/turf rear	23-10.50x12

Dimensions
Wheelbase	48.1 inches 122 cm
Length	70 inches 177 cm
Width	38.9 inches 98 cm
Height (steering wheel)	39.7 inches 100 cm
Height (hood)	35.7 inches 90 cm
Weight	689 lbs 312 kg

Attachments

Note: the Simplicity model 7790H is the same as the Allis Chalmers 920. The following data is from the 920 listing.

Attachment overview
42" mid-mount mower deck
48" mid-mount mower deck
Snowblower
Blade
Garden tractors are capable of using tillers, plows, or other ground-engaging attachments. TractorData does not list details of these attachments.

Photos

Simplicity 7790H

Simplicity 7790H

Simplicity 7790 with deck and rear-mount wood chipper.

Simplicity 7790, right side.