The Massey-Harris 21 Colt is a tractor model rated at approximately 22 horsepower, positioning it at the lighter end of its class. It was produced from 1952 to 1953 and features a 4-cylinder petrol liquid-cooled engine, driving two wheels via a 4-speed gearbox. The model is suitable for operations covering up to 200 acres. Technical specifications for the Massey-Harris 21 Colt are provided below.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
22 hp
Catalogue coverage
Variants represented
2
Richest spec table
46 rows
Recorded power
22 hp
Transmissions
4-speed gear
Production years
1952-1953
Verified variants
0
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Overview
ManufacturerMassey-HarrisReference
Row-Crop tractorReference
Built in Racine, Wisconsin, USAReference
The Massey-Harris 21 Colt was essentially the model 20, updated with new sheet metal.Reference
Two-wheel driveReference
Final drivesbevel gearReference
SteeringmanualReference
Open operator station.Reference
Engine
Continental 2.0L 4-cyl gasolineReference
Drawbar (claimed)16.1 kWReference
Belt (claimed)21.1 kWReference
Plows2 (14-inch)Reference
Continental F124Reference
gasolineReference
4-cylinderReference
liquid-cooledReference
Displacement2.0 LReference
Bore/Stroke76 x 111 mmReference
Rated RPM1800Reference
Transmission
4-speed gearReference
TypegearReference
Gears4 forward and 1 reverseReference
Clutchdry discReference
PTO & Hydraulics
Rear TypeI (optional)Reference
Rear PTOtransmissionReference
Rear PTO Type540Reference
Dimensions
Wheelbase210 cmReference
Front tire4x15Reference
Rear tire10x28Reference
Ag front4x15Reference
Ag front6x12 (single)Reference
Ag rear10x28Reference
Length313 cmReference
Height167 cmReference
Ground clearance49 cmReference
Front tread17/31 cmReference
Front tread132 to 187 cmReference
Rear tread132 to 203 cmReference
21 Colt Serial Numbers
19521001Reference
19531417Reference
19542669Reference
FAQ: How to read a serial number table.Reference
Capacities
Diameter24 cmReference
Width15 cmReference
RPM1224Reference
Speed927.81 meters/minReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.
