Lawn Tractor · 1975Unverified
Simplicity 9020 PowrMax
Simplicity 9020 PowrMax — PowrMax Series · 20 hp. Reference specifications; pending source verification.
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
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
720similar Allis Chalmers modelReference
Twin 20similar Montgomery Ward 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 RPM1300-3850Reference
StarterelectricReference
Starter volts12Reference
SparkplugChampion H-8Reference
SparkplugAutolite AL5Reference
Sparkplug gap0.635 mmReference
Point gap0.508 mmReference
Oil capacity3.8 LReference
Oil change100 hReference
Transmission
hydrostaticReference
TransmissionSundstrandReference
TypehydrostaticReference
Gearsinfinite forward and reverse (3-range)Reference
Oil capacity5.7 LReference
Oil typeATF AATF FDextronReference
Oil typeATF AReference
Oil typeATF FReference
Oil typeDextronReference
PTO & Hydraulics
Pressure34.5 barReference
Total flow9.5 lpmReference
Rear Type0Reference
Rear PTOindependentReference
ClutchelectricReference
Rear PTO Type2000Reference
Front PTOindependentReference
Front PTO Type3600Reference
Dimensions
Wheelbase142 cmReference
Weight589 kgReference
Front tire20x8.00-10Reference
Rear tire29x12.00-15Reference
Weight131 kgReference
Ag front4.00-12Reference
Ag rear8.00-16Reference
Ag front6.00-9Reference
Ag rear31.5-15.5Reference
Lawn/turf front20x8.00-10Reference
Lawn/turf rear29x12.00-15Reference
Length210 cmReference
Width142 cmReference
Height (steering wheel)121 cmReference
Shipping weight589 kgReference
Clearance (front axle)38 cmReference
Clearance (drawbar)33 cmReference
Simplicity 9020 attachments
60" mid-mount mower deckReference
snowblowerReference
bladeReference
front-end loaderReference
Electrical
GroundnegativeReference
Charging systemflywheel alternatorReference
Charging amps20Reference
Charging volts12Reference
Battery volts12Reference
Battery AH45Reference
Attachment overview
60" mid-mount mower deckReference
SnowblowerReference
BladeReference
Front-end loaderReference
Tillage tools for the Simplicity PowrMax 9020 included a 54-inch cultivator, 12-inch plow, and 48-inch tiller. A 48-inch rear-mounted rotary mower or 57-inch sickle bar mower, or belly mower could be used. An aircraft towing hitch was advertised, which would tow planes weighing up to 25,000 pounds.Reference
60" Mower deck
Typemid-mount SimplicityReference
Type3-blade with hydraulic liftReference
Cutting width152 cmReference
Overall width180 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.