Simplicity 9020 PowrMax

Simplicity 9020 PowrMaxThe Simplicity 9020 PowrMax is a 2WD garden tractor from the PowrMax series. This tractor was manufactured by Simplicity in Port Washington, Wisconsin, USA from 1975 to 1980. The Simplicity 9020 PowrMax is equipped with a 0.8 L (49.8 cu·in) two-cylinder gasoline engine and a hydrostatic transmission with infinite (3-range) forward and reverse gears.

The Simplicity 9020 garden tractor used the Onan CCKB engine. It is a 0.8 L, 816 cm2, (49.8 cu·in) two-cylinder natural aspirated gasoline engine with 83.0 mm (3.27 in) of the cylinder bore and 76.0 mm (2.99 in) of the piston stroke. The compression ratio rating is 7.0:1. This engine produced 19.7 PS (14.5 kW; 19.5 HP) at 3,600 rpm of output power.

The Simplicity 9020 is equipped with manual steering, disc brakes, open operator station and 14.4 liters (3.8 US gal.; 3.2 Imp. gal) fuel tank.

Following attachments are available for the Simplicity 9020 PowrMax garden tractor:

  • Mid-mount Simplicity 1,520 mm (60 in) mower deck
  • Front-mount Simplicity 1,520 mm (60 in) blade
  • Front-mount Simplicity 1,320 mm (52 in) single-stage snowblower
  • Simplicity loader

Simplicity 9020 PowrMax Specifications

General Specifications
ModelSimplicity 9020 PowrMax
Length2,100 mm (82.7 in)
Width1,420 mm (55.9 in)
Height (steering wheel)1,210 mm (47.6 in)
Wheel base1,420 mm (55.9 in)
Ground clearance Front axle: 380 mm (15 in)
Drawbar: 330 mm (13 in)
Weight589 kg (1,299 lbs)
Fuel tank capacity14.4 liters (3.8 US gal.; 3.2 Imp. gal)
Battery12V, 45Ah
Cabin typeOpen operator station
Engine modelOnan CCKB
Engine typeFour-stroke, air-cooled
Fuel typeGasoline
Displacement0.8 L, 816 cm2, (49.8 cu·in)
Bore and stroke83.0 mm X 76.0 mm (3.27 in X 2.99 in)
Compression ratio7.0:1
Horsepower19.7 PS (14.5 kW; 19.5 HP) at 3,600 rpm
Oil capacity:3.3 L (3.5 US. qt, 2.9 Imp. qt.)
Spark plugChampion H-8, Autolite AL5
Transmission and chassis
Chassis4×2 2WD
Steering typeManual
Transmission modelSundstrand
Transmission typeHydrostatic
GearsInfinite (3-range) forward and reverse
Speed Forward: 16.7 kmh (10.4 mph) Reverse: 10.0 kmh (6.2 mph)
Transmission oil capacity5.7 L (1.5 US. gal, 1.3 Imp. gal.)
Front tires Lawn/turf: 20×8.00-10
Rear tires Lawn/turf: 29×12.00-15
Three-Point Hitch
Control type
Lift capacity (at ends)
PTO (Power take-off shaft)
Front PTO typeIndependent with electric clutch
Front PTO speed2000 rpm
Rear PTO typeIndependent with electric clutch
Rear PTO speed2000 rpm
Hydraulic system
Hydraulic type
Pressure500 psi (34.5 bar)
Total flow2.5 gpm (9.5 lpm)
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