Simplicity 4040 PowrMax

Simplicity 4040 PowrMaxThe Simplicity 4040 PowrMax is a 2WD garden tractor from the PowrMax series. This tractor was manufactured by Simplicity in Port Washington, Wisconsin, USA during 1972. The Simplicity 4040 is equipped with a 0.8 L (49.8 cu·in) two-cylinder gasoline engine and a hydrostatic transmission with infinite forward and reverse (3-range) gears.

The Simplicity 4040 PowrMax garden tractor used the Onan CCKA 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 16.7 PS (12.3 kW; 16.5 HP) at 3,600 rpm of output power.

The Simplicity 4040 PowrMax is equipped with manual steering, disc brakes, an open operator station, and 14.4 liters (3.8 US gal.; 3.2 Imp. gal) fuel tank.

Simplicity 4040 PowrMax Specifications

General Specifications
Model Simplicity 4040 PowrMax
Length 2,100 mm (82.7 in)
Width 1,430 mm (56.3 in)
Height (steering wheel) 1,210 mm (47.6 in)
Wheel base 1,420 mm (55.9 in)
Ground clearance 380 mm (15 in)
Weight (shipping) 590 kg (1,301 lbs)
Fuel tank capacity 14.4 liters (3.8 US gal.; 3.2 Imp. gal)
Battery 12V, 52Ah
Cabin type Open operator station
Engine model Onan CCKA
Engine type Four-stroke, air-cooled
Cylinders 2
Fuel type Gasoline
Displacement 0.8 L, 816 cm2, (49.8 cu·in)
Bore and stroke 83.0 mm X 76.0 mm (3.27 in X 2.99 in)
Compression ratio 7.0:1
Horsepower 16.7 PS (12.3 kW; 16.5 HP) at 3,600 rpm
Starter Electric
Oil type SAE 5W-30, 30
Oil capacity: 3.3 L (3.5 US. qt, 2.9 Imp. qt.)
Spark plug Champion H-8
Transmission and chassis
Chassis 4×2 2WD
Steering type Manual
Brakes Disc
Transmission model Sundstrand 15
Transmission type Hydrostatic
Gears Infinite forward and reverse (3-range)
Speed Forward: 16.7 kmh (10.4 mph) Reverse: 10.0 kmh (6.2 mph)
Transmission oil capacity 5.7 L (1.5 US. gal, 1.3 Imp. gal.)
Front tires Ag: 4.00×12
Lawn/turf: 20×8-10
Rear tires Ag: 8×16
Lawn/turf: 29×12.50-15
Three-Point Hitch
Category 0
Control type
Lift capacity (at ends)
PTO (Power take-off shaft)
Front PTO type Independent with electric clutch
Front PTO speed 3,600 rpm
Rear PTO type Independent with electric clutch
Rear PTO speed 2,000 rpm
Hydraulic system
Hydraulic type
Total flow 2.25 gpm (8.5 lpm)
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