The 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 | |
| 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.) |
| Tires | |
| 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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