Toyosha CS112

Toyosha CS112 engineThe Toyosha CS112 is a 1.1 L (1,126 cc, 68.71 cu·in) natural aspirated three-cylinders four-stroke liquid-cooled internal combustion vertical diesel engine, manufactured by Japanese company Hinomoto under the Toyosha brand.

The Toyosha CS112 engine has three cylinders, an overhead valve (OHV) design, an indirect injection system, and an electric starter. The engine used a single-stage dry air cleaner, forced circulation liquid cooling system, and glow plugs for starting aid.

This engine produced 21.0 PS (15.6 kW; 21.0 HP) at 2,350 rpm of maximum horsepower.

General information

Engine Specifications
Engine model CS112
Engine type 4-stroke, OHV, three-cylinders
Displacement 1,126 cm3, (68.71 cu·in)
Max. horsepower 21.0 PS (15.6 kW; 21.0 HP) at 2350 rpm
Cooling system Liquid-cooled
Air cleaner Single stage, dry element
Lubricating system Forced splash
Fuel system Indirect injection
Starting system aid Glow plugs
Injection order 1-3-2

Cylinder Block and Head

A 75.0 mm (2.95 in) cylinder bore and 85.0 mm (3.35 in) piston stroke give the CS112 engine a total of 1,126 cc of displacement. Compression ratio rating is 23.0:1.

Cylinder block
Compression ratio: 23:1
Cylinder bore: 75.0 mm (2.95 in)
Piston stroke: 85.0 mm (3.35 in)
Crankshaft center distance: 42.5 mm (1.675 in)
Cylinder head
Valve arrangement: OHV
Valves:: 2 per cylinder (6 valves in total)

Tightening torque

Tightening torque settings
Cylinder head bolt torque (12mm): 88-98 Nm; 8.8-9.8 kg·m; 65-72 lb·ft
Cylinder head bolt torque (10mm): 39-49 Nm; 3.9-4.9 kg·m; 29-36 lb·ft
Connecting rod cap torque: 44-54 Nm; 4.4-5.4 kg·m; 33-40 lb·ft

Service Data

The diesel oil (API Service Classification CC or CD) with a viscosity of SAE 10W-30 is recommended for the CS112, refilling oil capacity is 3.7 L (3.91 US. qt, 3.26 Imp. qt.).

Maximum speed: 2,550 rpm
Idle speed: 850 rpm
Valve clearance
Intake valve clearance: 0.30 mm (0.0118 in)
Exhaust valve clearance: 0.35 mm (0.0138 in)
Oil system
Lubrication system: Forced splash
Oil type: Diesel oil (API Service Classification CC or CD)
Recommended oil: SAE 10W-30
Oil capacity: 3.7 L (3.91 US. qt, 3.26 Imp. qt.)
Fuel system
Type: Indirect injection


Model Years Produced
Hinomoto E1802 1982-1992
Hinomoto E1804 1982-1992
Hinomoto JF-1MS
Hinomoto JF-1S
Massey Ferguson 1020 (Hydro) 1983-1994
Massey Ferguson 1020 (STD) 1983-1994
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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We try to use official documentation and verify the published data, but errors may occur. In addition, specifications of machinery and equipment may vary depending on markets and modifications. We do not recommend the use of this data for spare parts or repairs. Use official service manuals or parts catalogs for your product.

1 Comment

  1. I have a three cyl Toyosha 40 horsepower motor diesel. Does anyone know the specs for torque of injectors???

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