Massey Harris 101/102 JUNIOR
Built: 1939–1946 · Series: Hunderter Baureihe
More machines from model year 1939
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
Massey-Harris 100 series (101 Super, 101/102 Junior, 101/102 Senior) – the model family built at the Racine plant with 15.3 to 28.7 kW, four- and six-cylinders, petrol and kerosene-petrol operation
The 100 series brings together the 101 (Super) model along with the Junior and Senior versions of the 101/102 types, which Massey-Harris built at its Racine, Wisconsin plant – the former J.I. Case Plow Works factory the group had acquired in 1928. Junior and Senior differ chiefly in engine size and cylinder count, while the Super version is the most powerful variant of the family.
Read on 3 more paragraphs
The register lists 3 versions with 15.3 to 28.7 kW from four- to six-cylinders of 2,027 to 3,707 cc displacement at rated speeds between 1,500 and 1,800 rpm. Operating weight ranges from 1,524 to 1,828 kg, with dimensions of around 3,207 mm length, 1,683 mm width and 1,607 mm height. The models ran on petrol or a petrol-kerosene mixture.
With production in Racine, Massey-Harris strengthened its presence on the North American market and competed in this segment directly with the established Junior/Senior ranges of other US makers. The parallel four- and six-cylinder engines allowed output to be staggered within a single, unified range.
On a used purchase of these historic tractors, points to check include the condition of the cylinder head and pistons, the function of the carburettor and ignition system, wear on the gearbox, clutch and rear axle, and corrosion on the chassis and mudguards. Spare parts for Junior and Senior engines are found mainly through vintage dealers specialising in Massey-Harris.
Sources: SpecCodex register, model data: Massey-Harris Hunderter-Baureihe
Technical data
Engine
| Fuel | Benzin/Kerosincorrect |
|---|---|
| Power | 20.8 hp (15.3 kW)correct |
| Rated speed | 1.500/1.800 rpmcorrect |
| Cylinders | 4correct |
| Displacement | 2,027 cm³correct |
| Bore | 76.2 mmcorrect |
| Stroke | 111.13 mmcorrect |
| Compression ratio | 6.75correct |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 3,207 mmcorrect |
|---|---|
| Width | 1,683 mmcorrect |
| Height | 1,607 mmcorrect |
| Wheelbase | 1,981 mmcorrect |
| Ground clearance | 314 mmcorrect |
| Unladen weight | 1,524 kgcorrect |
Drivetrain and chassis
| Drive | rear-wheel drivecorrect |
|---|---|
| Gearbox | 4 V/1 Rcorrect |
| Front tyres | 5.50 x 15correct |
| Rear tyres | 10 x 28 (RC = 9 x 36)correct |
| Top speed | 20 km/hcorrect |
Origin and approval
| Construction | frame constructioncorrect |
|---|---|
| Units built | 20.765 (102: 6.887)correct |
Where this model stands
Power-to-weight ratio: 10 kW/t (15 kW / 1.5 t)
Power class: Compact (< 40 hp)
Stronger than 8% of the tractors in the register — out of 15,663 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Massey Harris 101/102 JUNIOR have?
The Massey Harris 101/102 JUNIOR delivers 20.8 hp.
How much does the Massey Harris 101/102 JUNIOR weigh?
The unladen weight is 1,524 kg.
What engine does the Massey Harris 101/102 JUNIOR have?
4 cylinders, 2,027 cm³ displacement, Benzin/Kerosin.
How fast does the Massey Harris 101/102 JUNIOR go?
Top speed is 20 km/h.
What are the dimensions of the Massey Harris 101/102 JUNIOR?
3,207 mm × 1,683 mm × 1,607 mm.
When was the Massey Harris 101/102 JUNIOR built?
Production years: 1939–1946.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check the weights in the papers against the figures here — attachments change them.
- Check front and rear tyre sizes: mismatched pairs strain the drivetrain.
- Shift the gearbox cold and warm — jumps only show up at temperature.
- Load the hydraulics and watch for sag.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
Request a quote →
We ask the suppliers and come back with price and lead time.
Request spare parts →
This page carries 23 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
Missing a figure you were looking for? Report it →
Know this machine better? Have a photo, a manual, or know that a figure is wrong? Add it to the register →
Other models in this series
Sources: Wikibooks Traktorenlexikon (CC BY-SA 4.0) (retrieved August 2026) · How we check the data
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.
