Deutz-Allis lawn tractors

Deutz-Allis 1920 Ultima

The Deutz-Allis 1920 Ultima is a garden tractor produced from 1987 to 1992 by Simplicity and distributed by Deutz-Allis. It features a 20 hp Kohler 770cc 2-cylinder gasoline engine, hydrostatic transmission, and various attachments including mower decks, snowblower, blade, and front-end loader. It has a two-wheel drive with spur gear final drives and power steering. The tractor offers optional rear PTO and independent front and rear PTO with electric clutches.

Power-

Founded-

Model1920 Ultima

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Technical Specifications

Detailed specifications and technical data for Deutz-Allis 1920 Ultima

Tires

Ag rear	23-10.5-12
Ag front	16-6.50x8
Lawn/turf rear	23x10.5-12
Lawn/turf front	16x6.50-8

Engine

Type	gasoline
Model	Kohler M20
Cylinders	2-cylinder
Fuel tank	4.25 gal (16.1 L)
Rated RPM	3400
Sparkplug	Champion RV15YC
Air cleaner	dry dual element
Bore/Stroke	3.125x3.063 inches (79 x 78 mm)
Compression	6.6:1
Displacement	770 cc (46.98 ci)
Oil capacity	1.75 qts (1.7 L)
Configuration	air-cooled horizontal-shaft opposed-twin
Power (gross)	20 hp (14.9 kW)
Sparkplug gap	0.025 inches (0.635 mm)
Starter volts	12

Dimensions

Width	38.5 inches (97 cm)
Length	78 inches (198 cm)
Weight	873 lbs (395 kg)
Wheelbase	51 inches (129 cm)
Height (steering wheel)	47 inches (119 cm)

Electrical

Ground	negative
Battery volts	12
Charging amps	15
Charging system	flywheel alternator

Mechanical

Drive	Two-wheel drive
Brakes	Drum brakes
Final drives	spur gear
Power steering	Yes
Operator station	Open operator station

Production

Type	Garden tractor
Series	Ultima Series
Distributor	Deutz-Allis
Manufacturer	Simplicity
Years produced	1987 - 1992

Attachments

Blade	Yes
Additional	A 38-inch tiller was available. The tiller required a rear lift kit and rear PTO. Tiller required the appropriate gear box for the PTO (2000 or 3400 RPM).
Snowblower	Yes
Front-end loader	Yes
42" mid-mount mower deck	Yes
48" mid-mount mower deck	Yes
60" mid-mount mower deck	Yes

Transmission

Type	shaft-driven hydrostatic
Gears	infinite forward and reverse (2-range)
Model	Sundstrand 15
Oil type	Type F ATF
Oil capacity	6 qts (5.7 L)

Tractor hitch

Rear Type	0 (Optional)

Attachments details

46" Blade	front-mount, 46 inches width (116 cm)
42" Mower deck	42 inches (106 cm) width, total width 54 inches (137 cm), 179 lbs (81 kg)
48" Mower deck	48 inches (121 cm) width, total width 60 inches (152 cm), 3-blade, 178 lbs (80 kg)
60" Mower deck	60 inches (152 cm) width, total width 74 inches (187 cm), 3-blade, 298 lbs (135 kg)
42" Snow blower	42 inches width (106 cm), single-stage, front-mount
46" Snow blower	46 inches width (116 cm), dual-stage, front-mount
71691309 Loader	400 lbs lift (full at pin) (181 kg), 500 lbs breakout (at pin) (226 kg), 41° dump, 12.5 inches reach (dumped) (31 cm), 42.5 inches reach (ground) (107 cm), 16° rollback, 72 inches height (at pin) (182 cm), 55 inches clearance (dumped) (139 cm), boom cyl: 1.5 inches (3 cm), bucket cyl: 1.5 inches (3 cm), Bucket width: 38 inches (96 cm) and 48 inches (121 cm)