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Lawn Tractor · 1973Unverified

Simplicity 4041 PowrMax

Name: Simplicity 4041 PowrMax
Brand: Simplicity

Simplicity 4041 PowrMax — PowrMax Series · 20 hp. Reference specifications; pending source verification.

The Simplicity 4041 PowrMax is a lawn tractor classified as a higher-powered machine in its class, with a rated output of 20 hp. This model was manufactured between 1973 and 1974. It features a 2-cylinder petrol air-cooled engine, which powers the two-wheel drive system via a hydrostatic transmission. The listed weight of the 4041 PowrMax is 589 kg, making it suitable for tasks up to approximately 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

20 hp

Weight

589 kg

Catalogue coverage

Variants represented

Richest spec table

80 rows

Recorded power

20 hp

Recorded weight

589 kg

Transmissions

hydrostatic

Production years

1973-1974

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerSimplicityReference

Garden tractorReference

Built in Port Washington, Wisconsin, USAReference

Two-wheel driveReference

Manual steeringReference

Disc brakesReference

Open operator station.Reference

Variants

620similar Allis Chalmers modelReference

Engine

19.5HP Onan 816cc 2-cyl gasolineReference

Fuel tank14.4 LReference

Onan CCKBReference

gasolineReference

2-cylinderReference

air-cooled horizontal-shaft opposed-twinReference

Displacement49.8 ciReference

Bore/Stroke83 x 76 mmReference

Power (gross)14.5 kWReference

Air cleanerpaper elementReference

Compression7:1Reference

Rated RPM3600Reference

Idle RPM1200-3850Reference

StarterelectricReference

Starter volts12Reference

SparkplugChampion H-8Reference

Sparkplug gap0.635 mmReference

Point gap0.508 mmReference

Intake valve clearance0.178 mmReference

Exhaust valve clearance0.406 mmReference

Oil capacity3.3 LReference

Transmission

hydrostaticReference

TransmissionSundstrandReference

TypehydrostaticReference

Gearsinfinite forward and reverse (3-range)Reference

Oil capacity4.7 LReference

Three-speed gear shift with hydrostatic transmissions. Hydrostatic must be in neutral to shift, although use of the foot clutch is not required or recommended.Reference

1ClutchReference

2ThrottleReference

3Forward/reverseReference

4Left brakeReference

5Right brakeReference

PTO & Hydraulics

Pressure34.5 barReference

Pump flow8.5 lpmReference

Rear Type0Reference

Rear PTOindependentReference

ClutchelectricReference

Rear PTO Type2000Reference

Front PTOindependentReference

Front PTO Type3600Reference

Dimensions

Wheelbase142 cmReference

Weight589 kgReference

Front tire20x8-10Reference

Rear tire29x12.50-10Reference

Ag front4.00x12Reference

Ag rear8x16Reference

Lawn/turf front20x8-10Reference

Lawn/turf rear29x12.50-10Reference

Length210 cmReference

Width109 cmReference

Width143 cmReference

Height (steering wheel)121 cmReference

Shipping weight589 kgReference

Simplicity 4041 attachments

60" mid-mount mower deckReference

snowblowerReference

bladeReference

front-end loaderReference

4041 Serial Number Location

Serial number decal on the right side of the tractor frame, above the foot rest.Reference

Electrical

GroundnegativeReference

Charging systemflywheel alternatorReference

Charging amps20Reference

Battery volts12Reference

Battery AH45Reference

Attachment overview

60" mid-mount mower deckReference

SnowblowerReference

BladeReference

Front-end loaderReference

The Simplicity 4041 was advertised with a single-bottom 12-inch plow or 48-inch rear tiller for gardening. In addition to the belly mower, a 48-inch rear mower or 57-inch sickle bar could be fitted.Reference

60" Mower deck

Typemid-mount SimplicityReference

Type3-blade with hydraulic liftReference

Cutting width152 cmReference

Cut height4 to 7 cmReference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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