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Simplicity 4040 Powermax Specifications

General Information

Tractor Model ................... Simplicity 4040
Tractor Type ................... Garden tractor
Manufacture Years ................... 1972
Series ................... Powermax
Fuel Type ................... Gasoline

Simplicity 4040 Engine Specifications

Engine Model ................... Onan CCKA
Engine Type ................... 4-cycle twin cylinder air-cooled L-head gasoline
Number of Cylinders ................... 2
Engine Bore, in (mm) ................... 3.25 (82.6)
Piston Stroke, in (mm) ................... 3.00 (76.2)
Total Displacement, cu. in (cm3) ................... 49.8 (816)
Rated Power, Hp (kW) ................... 16.5 (12.3)
Maximum Speed, rpm ................... 3600
Low Idle Speed, rpm ................... 1500-1550
Compression Ratio ................... 7:0:1
Fuel System Type ................... Carburetor
Carburetor ................... Down draft type
Fuel Pump Type ................... Diaphragm
Governor Type ................... Adjustable mechanical flyball
Lubricating System ................... Full pressure
Oil Filter Type ................... Full flow
Ignition System ................... Battery
Ignition Timing, deg ................... 24 BTC
Spark Plug Type ................... Champion RH8C
Spark Plug Gap, in (mm) ................... 0.025 (0.64)
Breaker Point Gap, in (mm) ................... 0.020 (0.51)
Intake Valve Clearance (Cold), in (mm) ................... 0.007 (0.18)
Exhaust Valve Clearance (Cold), in (mm) ................... 0.016 (0.41)
Fuel Tank Capacity, gal (L) ................... 3.8 (14.5)
Oil Capacity, qt (L) ................... 3.5 (3.3)

Electrical System

Electrical System Rating, Volts ................... 12
Charging System ................... Flywheel alternator
Charging System Rating, Amps ................... 20
Starter Type ................... Electric
Number of Batteries ................... 1
Battery, AH ................... 52
Electric Ground ................... Negative

Power Take Off

Rear PTO Operational Type ................... Independent
Rear PTO Clutch ................... Electric
Rear PTO Speed, rpm ................... 2000
Front PTO Operational Type ................... Independent
Front PTO Clutch ................... Electric
Front PTO Speed, rpm ................... 3600

Simplicity 4040 Transmission

Transmission Model ................... Sundstrand
Transmission Type ................... Hydrostatic
Number of Forward Gears ................... Infinite (3 ranges)
Number of Reverse Gears ................... Infinite (3 ranges)
Oil Capacity, qt (L) ................... 6.0 (5.7)
Maximum Forward Speed, mph (kph) ................... 10.4 (16.7)
Maximum Reverse Speed, mph (kph) ................... 6.2 (10.0)

Wheels and Tires

Drive Wheels ................... 2WD 4x2
Steering Configuration ................... Front steer
Steering System ................... Manual
Brakes Type ................... Mechanical disc
Front Tire Size (Std) ................... 4.00x12
Rear Tire Size (Std) ................... 8.00x16
Front Tire Size (Turf) ................... 20x8.00-10
Rear Tire Size (Turf) ................... 29x12.5-15

Simplicity 4040 Hydraulic System

Implement Pump Type, gpm (Lpm) ................... Hydrostatic transmission charge pump
Implement Pump Flow, gpm (Lpm) ................... 2.25 (8.55)
Hydraulic Pressure, Bar (psi) ................... 34.5 (500)
Hydraulic Cylinder Size (Rod Diameter and Stroke), in (mm) ................... 2.25x4.00 (57x101)
3-Point Hitch Type ................... Flexible swinging draft hubs with ball couplers
3-Point Hitch Category ................... 0
Lift Control ................... Manual

Dimensions and Weight

Wheelbase, in (mm) ................... 56 (1420)
Length, in (mm) ................... 83 (2100)
Height, in (mm) ................... 48 (1215)
Overall Width, in (mm) ................... 56 (1420)
Ground Clearance, in (mm) ................... 15 (375)
Weight, lb (kg) ................... 1300 (590)