Massey-Harris Pony 812

The Massey-Harris Pony 812 is a tractor produced by Massey Harris. It is equipped with a 74.5 ci 1.2 L engine. The listed engine power is Gasoline (listed): 15.8 hp / 11.8 kW. Transmission: 3 forward and 1 reverse. Operating weight: 1653 lbs 749 kg.

Engine Power

Gasoline (listed): 15.8 hp / 11.8 kW

Fuel & Capacities

6.9 gal 26.1 L

Transmission

3 forward and 1 reverse

Operating Weight

1653 lbs 749 kg

Overview

	1951 - 1957 Utility tractor

Production
Manufacturer	Massey-Harris
Utility tractor
Built in Marquette-lez-Lille, France

Massey-Harris Pony 812 Engine
Simca 1.2L 4-cyl gasoline
Fuel tank	6.9 gal 26.1 L
Engine details ...

Massey-Harris Pony 812 Transmission
3-speed gear
Transmission details ...

Massey-Harris Pony 812 Power
Engine	15.8 hp 11.8 kW

Mechanical
Two-wheel drive
Final drives	spur gear
Manual steering
Mechanical band brakes
Open operator station.

Power Take-off (PTO)
Rear PTO	independent

Dimensions & Tires
Wheelbase	66.9 inches 169 cm
Weight	1653 lbs 749 kg
Front tire	4x15
Rear tire	8x24
Full dimensions and tires ...

Engine

Engine Detail — 74.5 ci / 1.2 L Gasoline

Manufacturer	Simca
Fuel Type	Gasoline
Configuration	4-cylinder, liquid-cooled
Displacement	74.5 ci 1.2 L
Bore/Stroke	2.83x2.95 inches 72 x 75 mm
Power	15.8 hp 11.8 kW
Compression	6.25:1
Rated RPM	1850
Starter	electric
Starter volts	6
Oil capacity	3 qts 2.8 L

Transmission

Transmission — 3 forward and 1 reverse gear

Type	gear
Gears	3 forward and 1 reverse
Oil capacity	3.6 qts 3.4 L

Dimensions

Massey-Harris Pony 812 Tires
Ag front	4x15
Ag rear	8x24
	9x24

Dimensions
Wheelbase	66.9 inches 169 cm
Length	104.7 inches 265 cm
Width	55.9 inches 141 cm
Height	61.4 inches 155 cm
Weight	1653 lbs 749 kg
Ballasted weight	2271 lbs 1030 kg
Ground clearance	20.9 inches 53 cm
Front tread	40.9 to 68.9 inches 103 to 175 cm
Rear tread	40.9 to 68.9 inches 103 to 175 cm

Photos

Massey-Harris Pony 812 tractor photo

Recommended Implements & Sizing Guide

Engineering recommendations for Massey Harris Massey-Harris Pony 812 based on its 15.8 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	1 to 2 Bottom (12")1 - 2 铧 (30 cm)	Light Duty	Ideal for garden plots and light sandy soil.
Rotary Cutter / MowerMowing & Clearing	4 ft (48 in)1.2 m	Light Duty	Pasture clipping and light brush under 1" diameter.
Rotary TillerSeedbed Prep	42 to 48 in105 - 120 cm	Light Duty	Covers compact tractor tire width.

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Massey Harris Massey-Harris Pony 812.

Estimated Continuous Field Runtime: 8.4 hrs

Approximately 8.4 hours of continuous field operation at ~75% rated power on a full tank (6.9 gal / 26.1 L).

Estimated 75% Load Fuel Burn~0.8 gal/hr (3.1 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours

Massey Harris Massey-Harris Pony 812 Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Massey Harris Massey-Harris Pony 812.

Enter value:

Unit:

Converted Equivalents:

Horsepower (HP)15.8 hp

Kilowatts (kW)11.8 kW

Metric Horsepower (PS / CV)16 PS

Direct Competitor Comparison

Compare Massey-Harris Pony 812 against same-era industry alternatives in the same horsepower class.

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