Deutz-Allis 1920 Ultima

The Deutz-Allis 1920 Ultima is a tractor produced by Deutz Allis Lawn Tractors. It is equipped with a 770 cc 46.98 ci engine. The listed engine power is Gasoline (gross): 20 hp / 14.9 kW. Transmission: Sundstrand 15. Operating weight: 1036 lbs 469 kg.

Engine Power

Gasoline (gross): 20 hp / 14.9 kW

Fuel & Capacities

4.25 gal 16.1 L

Transmission

Sundstrand 15

Operating Weight

1036 lbs 469 kg

Overview

	1987 - 1992 Ultima SeriesGarden tractorSimplicity built Ultima Series Garden tractor Simplicity built

Production
Distributor	Deutz-Allis
Manufacturer	Simplicity
Garden tractor

Deutz-Allis 1920 Engine
20HP Kohler 770cc 2-cyl gasoline
Fuel tank	4.25 gal 16.1 L
Engine details ...

Deutz-Allis 1920 Transmission
hydrostatic
Transmission details ...

Mechanical
Two-wheel drive
Final drives	spur gear
Power steering
Drum brakes
Open operator station.

Tractor hitch
Rear Type	0 OptOptional

Power Take-off (PTO)
Rear PTO	optional
Rear PTO Type	2000
Mid PTO	independent
Clutch	electric

Dimensions & Tires
Wheelbase	51 inches 129 cm
Weight	1036 lbs 469 kg
Front tire	16-6.50x8
Rear tire	23-10.5-12
Full dimensions and tires ...

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

References

Operator's Manual 1918-1920 Tractor (1700171) published in 1986
Lawn & Garden Riding Equipment published in 1988, by Deutz-Allis

Engine

Engine Detail — 770 cc / 46.98 ci Gasoline

Manufacturer	Kohler M20
Fuel Type	Gasoline
Configuration	2-cylinder, air-cooled horizontal-shaft
Displacement	770 cc 46.98 ci
Bore/Stroke	3.125x3.063 inches 79 x 78 mm
Power (gross)	20 hp 14.9 kW
Air cleaner	dry dual element
Compression	6.6:1
Rated RPM	3600
Starter volts	12
Oil capacity	1.75 qts 1.7 L
Sparkplug	Champion RV15YC
Sparkplug gap	0.025 inches 0.635 mm

Transmission

Transmission — Sundstrand 15

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

	Type F ATF

Dimensions

Deutz-Allis 1920 Tires
Ag front	16-6.50x8
Ag rear	23-10.5-12
Lawn/turf front	16-6.50x8
Lawn/turf rear	23-10.5-12

Dimensions
Wheelbase	51 inches 129 cm
Length	78 inches 198 cm
Width	38.5 inches 97 cm
Height (steering wheel)	47 inches 119 cm
Weight	1036 lbs 469 kg

Attachments

Attachment overview
42" mid-mount mower deck
48" mid-mount mower deck
60" mid-mount mower deck
Snowblower
Blade
Front-end loader
A 38-inch chain-driven rear tiller was available.

Photos

Deutz-Allis 1920 Ultima with mower deck.

Deutz-Allis 1920 Ultima with snow blower.

Deutz-Allis 1920 Ultima operator station and controls.

Recommended Implements & Sizing Guide

Engineering recommendations for Deutz Allis Lawn Tractors Deutz-Allis 1920 Ultima based on its 20 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	1 to 2 Bottom (12")1 - 2 铧 (30 cm)	Light Duty	Ideal for garden plots and light sandy soil.
Rotary Cutter / MowerMowing & Clearing	4 ft (48 in)1.2 m	Light Duty	Pasture clipping and light brush under 1" diameter.
Rotary TillerSeedbed Prep	42 to 48 in105 - 120 cm	Light Duty	Covers compact tractor tire width.
Disc HarrowSecondary Tillage	5 to 6 ft (16-18" discs)1.5 - 1.8 m (40-45 cm 耙片)	Light Duty	Small acreage soil break-up and secondary aeration.

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Deutz Allis Lawn Tractors Deutz-Allis 1920 Ultima.

Estimated Continuous Field Runtime: 4.1 hrs

Approximately 4.1 hours of continuous field operation at ~75% rated power on a full tank (4.3 gal / 16.1 L).

Estimated 75% Load Fuel Burn~1 gal/hr (3.9 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours

Deutz Allis Lawn Tractors Deutz-Allis 1920 Ultima Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Deutz Allis Lawn Tractors Deutz-Allis 1920 Ultima.

Enter value:

Unit:

Converted Equivalents:

Horsepower (HP)20 hp

Kilowatts (kW)14.9 kW

Metric Horsepower (PS / CV)20.3 PS

Direct Competitor Comparison

Compare Deutz-Allis 1920 Ultima against same-era industry alternatives in the same horsepower class.

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