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Simplicity 4040 PowrMax

Simplicity 4040 PowrMax tractor
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The Simplicity 4040 PowrMax is a garden tractor introduced in 1972 as part of the PowrMax Series. It features a 16.5 hp Onan 816cc 2-cylinder gasoline engine with a hydrostatic Sundstrand 15 transmission offering infinite forward and reverse speeds in 3 ranges. The tractor has a wheelbase of 56 inches and weighs 1300 lbs. It includes two-wheel drive, manual steering, disc brakes, and an open operator station. The 4040 supports various attachments including a 60" mid-mount mower deck, snowblower, blade, and front-end loaders. Electrical system is 12 volts with a flywheel alternator charging at 20 amps. PTO options include independent front and rear electric clutches.
Simplicity 4040PowrMaxgarden tractorOnan enginehydrostatic transmissionlawn tractor16.5 hp1972
Power16 hp
Founded60" deck
Model4040

Technical Specifications

Detailed specifications and technical data for Simplicity 4040 PowrMax

Tires

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

Engine

Type:gasoline, 2-cylinder, air-cooled horizontal-shaft opposed-twin
Model:Onan CCKA
Starter:electric
Idle RPM:1200-3850
Fuel tank:3.8 gal (14.4 L)
Point gap:0.020 inches (0.508 mm)
Rated RPM:3600
Sparkplug:Champion H-8
Air cleaner:paper element
Bore/Stroke:3.25x3.00 inches (83 x 76 mm)
Fuel system:Marvel-Schebler downdraft carburetor
Displacement:816 cc (49.8 ci)
Oil capacity:3.5 qts (3.3 L)
Power (gross):16.5 hp (12.3 kW)
Sparkplug gap:0.025 inches (0.635 mm)
Starter volts:12
Compression ratio:7:1
Oil change interval:50 h
Intake valve clearance:0.007 inches (0.178 mm)
Exhaust valve clearance:0.016 inches (0.406 mm)

Features

Drive:Two-wheel drive
Brakes:Disc brakes
Steering:Manual steering
Operator station:Open operator station

Dimensions

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

Electrical

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

Hydraulics

Pressure:500 psi (34.5 bar)
Pump flow:2.25 gpm (8.5 lpm)

Production

Type:Garden tractor
Series:PowrMax Series
Built in:Port Washington, Wisconsin, USA
Year introduced:1972

Attachments

Blade:60" front-mount hydraulic-lift manual-angle
Snowblower:52" single-stage front-mount with hydraulic lift
Front-end loader:Danco SV-40 Loader, 400 lbs lift (full at pin) (181 kg), 600 lbs breakout (272 kg), 45° dump, 24 inches reach (dumped) (60 cm), 52 inches reach (ground) (132 cm), 5° rollback (ground line), 84 inches height (at pin) (213 cm), 62 inches clearance (dumped) (157 cm), Bucket width: 42.5 inches (107 cm); 1690112 Loader built by Ark, 400 lbs lift (full at pin) (181 kg), 650 lbs breakout (294 kg), 45° dump, 24.75 inches reach (dumped) (62 cm), 52 inches reach (ground) (132 cm), 8° rollback (ground line), 85 inches height (at pin) (215 cm), 66.5 inches clearance (dumped) (168 cm), Bucket width: 40 inches (101 cm) and 48 inches (121 cm); 1690157 Loader built by Ark, 400 lbs lift (full at pin) (181 kg), 650 lbs breakout (294 kg), 43° dump, 23.5 inches reach (dumped) (59 cm), 51.5 inches reach (ground) (130 cm), 8° rollback (ground line), 86.5 inches height (at pin) (219 cm), 69 inches clearance (dumped) (175 cm), Bucket width: 48 inches (121 cm)
60" mid-mount mower deck:3-blade with hydraulic lift, cutting width 60 inches (152 cm), cut height 1.625 to 3 inch (4 to 7 cm)

Transmission

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

Tractor hitch

Rear Type:0

Power Take-off (PTO)

Rear PTO:independent (Optional)
Front PTO:independent
Rear PTO Type:2000
Front PTO Type:3600
Rear PTO Clutch:electric
Front PTO Clutch:electric

Related Models

Simplicity 4041 PowrMax

Model:4041