Minneapolis-Moline 4 Star

Last Updated: July 2024

Overview

The Minneapolis-Moline 4 Star is a row-crop tractor with versatile fuel options offering gasoline, diesel, or LP-gas variants. The 4x2 2WD tractor comes equipped with power steering and a choice between a standard 5-speed gear or an optional Ampli-Torc two-speed power shift transmission providing 10 forward and 2 reverse gears. The 206.5 cubic inch engine operates at a rated speed of 1750 RPM, with a compression ratio of 6.5:1, and a coolant capacity of 13.5 quarts. Independent test results show a maximum power output of 44.57 HP at 1750 RPM with a fuel consumption of 4.146 gallons per hour. The drawbar performance indicates a maximum available power of 38.58 HP at 1753 RPM with a drawbar pull of 3013 lbs at 4.80 mph. The tractor's operating weight ranges from 5245 lbs without ballast to 8495 lbs with ballast added. Detailed tire specifications and chassis dimensions are also provided.

Key Specifications

Category: Row Crop

Transmission: Gear with optional Ampli-Torc two-speed power shift

Drive Type: 2WD

Operating Weight: 5245 (without ballast), 8495 (with ballast)

Fuel Type: Gasoline, Diesel, LP-gas

Image Gallery

Minneapolis-Moline 4 Star Tractor

Technical Specifications

Engine

Manufacturer: Minneapolis-Moline
Model: -
Cooling Type: -
Cylinder Orientation: -
Valve Configuration: -
Fuel Type: Gasoline, Diesel, LP-gas
Induction Type: -
Cylinders: 4
Displacement (ci): 206.5
Bore (in): 3.625
Stroke (in): 5
Rated RPM: 1750
Power Output (hp): -

Transmission

Type: Gear with optional Ampli-Torc two-speed power shift
Forward Gears: 10
Reverse Gears: 2
Total Gears: -

Dimensions

Length (in): 132
Width (in): 82
Height (in): 86 (to exhaust)
Operating Weight (lb): 5245 (without ballast), 8495 (with ballast)

Power Take-Off (PTO)

PTO Type: -
PTO Speed 1 (rpm): -
PTO Speed 2 (rpm): -
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: 4x2 2WD
Drive Type: 2WD
Steering Type: Power
Coolant Capacity (qts): 13.5
Front Tire Diameter (in): -
Front Tire Width (in): -
Rear Tire Diameter (in): -
Rear Tire Width (in): -
Front/Rear Rim Diameter (in): -
Tire Type: Agricultural
Manufacture - End Year: -
Hitch Type: -
Hitch Category: -
Hitch Position: -
Hitch Capacity (lb): -
Operator Station Type: -
Starter Type: Electric
Brake Type: -
Hydraulic System Type: -

Test Results

Nebraska Tractor Test Laboratory - Test Date: April 20 to May 4, 1961

Maximum Power and Fuel Consumption

Maximum Power: 44.57 HP at 1750 rpm
Fuel Consumption at Maximum Power: 4.146 Gal/hr with a fuel efficiency of 0.567 lb/hp.hr and 10.75 Hp.hr/gal
Standard PTO Speed (540 rpm): 41.25 HP at 1524 rpm with a fuel consumption of 3.882 Gal/hr and 0.574 lb/hp.hr

Drawbar Performance

Maximum Available Power: 38.58 HP at 1753 rpm with a drawbar pull of 3013 lbs and a speed of 4.80 mph (2nd Gear)
Fuel Consumption at Maximum Pull: 3.932 Gal/hr with a fuel efficiency of 0.622 lb/hp.hr and 9.81 Hp.hr/gal
75% of Pull at Maximum Power (10 Hours): 32.61 HP at 1905 rpm with a drawbar pull of 2321 lbs and a speed of 5.27 mph

Torque and Engine Performance

Maximum Torque: Available data attributes engine crankshaft speed and the corresponding drawbar performance.
Maximum Power with Ballast: 38.63 HP at 1749 rpm with a drawbar pull of 2417 lbs (3rd Gear)

Hydraulic Performance

Information specific to hydraulic performance was not provided in the available data.

Overall Efficiency

Fuel Efficiency Average: 0.748 lb/hp.hr with a fuel consumption of 3.030 Gal/hr during varying power and fuel consumption tests

NTTL.(1961).Nebraska Tractor Test 789 for Minneapolis-Moline 4 Star Gasoline. Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/1201