Simplicity 4040 PowrMax

The Simplicity 4040 PowrMax is a tractor produced by Simplicity Lawn Tractors. It is equipped with a 816 cc 49.8 ci engine. The listed engine power is Gasoline (gross): 16.5 hp / 12.3 kW. Transmission: Sundstrand 15. Operating weight: 1300 lbs 589 kg.

Overview

	1972 PowrMax SeriesGarden tractor PowrMax Series Garden tractor

Production
Manufacturer	Simplicity
Garden tractor
Built in Port Washington, Wisconsin, USA

Variants
616	similar Allis Chalmers model

Simplicity 4040 Engine
16.5HP Onan 816cc 2-cyl gasoline
Fuel tank	3.8 gal 14.4 L
Engine details ...

Simplicity 4040 Transmission
hydrostatic
Transmission details ...

Mechanical
Two-wheel drive
Manual steering
Disc brakes
Open operator station.

Hydraulics
Pressure	500 psi 34.5 bar
Pump flow	2.25 gpm 8.5 lpm

Tractor hitch
Rear Type	0

Power Take-off (PTO)
Rear PTO	independent OptOptional
Clutch	electric
Rear PTO Type	2000
Front PTO	independent
Clutch	electric
Front PTO Type	3600

Dimensions & Tires
Wheelbase	56 inches 142 cm
Weight	1300 lbs 589 kg
Front tire	20x8-10
Rear tire	29x12.50-15
Full dimensions and tires ...

Electrical
Ground	negative
Charging system	flywheel alternator
Charging amps	20
Battery volts	12
Battery AH	52

References
Owner's Manual 4040 Agricultural and Industrial Tractor (027) published in 1972
Operator's Manual Model 1690112 Loader
Operator's Manual System 9000 Loader (TP-1380)
General Instructions Manual - Model SV40 published in 1973

Engine

Engine Detail — 816 cc / 49.8 ci Gasoline

Manufacturer	Onan CCKA
Fuel Type	Gasoline
Configuration	2-cylinder, air-cooled horizontal-shaft opposed-twin
Displacement	816 cc 49.8 ci
Bore/Stroke	3.25x3.00 inches 83 x 76 mm
Power (gross)	16.5 hp 12.3 kW
Fuel system	Marvel-Schebler downdraft carburetor
Air cleaner	paper element
Compression	7:1
Rated RPM	3600
Idle RPM	1200-3850
Starter	electric
Starter volts	12
Sparkplug	Champion H-8
Sparkplug gap	0.025 inches 0.635 mm
Point gap	0.020 inches 0.508 mm
Intake valve clearance	0.007 inches 0.178 mm
Exhaust valve clearance	0.016 inches 0.406 mm
Oil capacity	3.5 qts 3.3 L
Oil change	50 h

Transmission

Transmission — Sundstrand 15

Transmission	Sundstrand 15
Type	hydrostatic
Gears	infinite forward and reverse (3-range)
Oil capacity	6 qts 5.7 L
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.

Dimensions

Simplicity 4040 Tires
Ag front	4.00x12
Ag rear	8x16
Lawn/turf front	20x8-10
Lawn/turf rear	29x12.50-15

Dimensions
Wheelbase	56 inches 142 cm
Length	83 inches 210 cm
Width	43.3 inches (min) 109 cm
	56.5 inches (max) 143 cm
Height (steering wheel)	48 inches 121 cm
Shipping weight	1300 lbs 589 kg
Ground clearance	15 inches 38 cm
Rear tread	29.2 inches 74 cm

Attachments

Attachment overview
60" mid-mount mower deck
Snowblower
Blade
Front-end loader
Garden tractors are capable of using tillers, plows, or other ground-engaging attachments. TractorData does not list details of these attachments.

60" Mower deck
Type	mid-mount Simplicity
	3-blade with hydraulic lift
Cutting width	60 inches 152 cm
Cut height	1.625 to 3 inch 4 to 7 cm

Photos

Simplicity 4040, left side.

Simplicity 4040, rear view.