Hinomoto C142, C144, C172 and C174 specifications: engine, dimensions and data
This page lists the specifications of the Hinomoto C142, C144, C172 and C174 together: engine, bore, displacement, power and overhaul dimensions for the CS86. The C142 and C144 feature a Toyosha CS86, while the C172 and C174 feature a Toyosha CS100.
Suitable for the entire series: Hinomoto C142, C144, C172 and C174. Each engine type is available as 2WD (C142, C172) and as 4WD (C144, C174).
Contents
Hinomoto C142, C144, C172 and C174 models and engines
| C142 / C144 | C172 / C174 | |
|---|---|---|
| Drive | 2WD / 4WD | 2WD / 4WD |
| Engine | Toyosha CS86 | Toyosha CS100 |
| Bore x stroke | 70 x 75 mm | 73 x 80 mm (indicative) |
| Displacement | 865 cc | approx. 1.0 L (indicative) |
| Power (indicative, not from manual) | 17 hp gross | 19.7 hp gross, approx. 14.8 hp PTO |
| Sister model | Massey Ferguson 1010 | Allis Chalmers 5015, Deutz-Allis 5215, Simplicity 9518 |
Hinomoto C142/C144 (CS86) and C172/C174 (CS100): what is the difference?
The CS86 has a bore of 70 mm, while the CS100 has a bore of 73 mm (indicative). Therefore, head gaskets and piston rings are not interchangeable between these engines. Always order based on engine type.
The workshop manual covers the C142 and C144 completely. The C172 and C174 are not included. For the CS100, we therefore only provide the engine, bore, power, and the correct parts, and no capacities, adjustment values, or tightening torques. These have not been confirmed for the CS100. Therefore, always top up oil on the C172 and C174 using the dipstick. The number of gears for the C172 and C174 is indicatively 9 forward and 3 reverse.
Is the CS100 a larger CS86? 73 mm bore versus 70 mm and approx. 1.0 L versus 865 cc, so yes. The figures for the CS100 are indicative. Head gasket and piston rings are not interchangeable.
Hinomoto C142 and C144 engine data (CS86)
| Specification | Value |
|---|---|
| Cylinders | 3 |
| Compression | 23:1 |
| Firing order | 1-3-2 |
| Nominal rpm | 2500 rpm |
| Idle speed | 850 to 900 rpm |
| Maximum no-load speed | 2650 to 2700 rpm |
| Static injection timing | 25 degrees before TDC |
| Valve springs per valve | 1 |
| Oil pressure | approx. 1.0 bar at 800 rpm, approx. 4.9 bar at 2700 rpm |
| Thermostat | starts opening at 69 to 73 °C, fully open at 85 °C |
| Radiator cap | opens at approx. 0.9 bar |
| Alternator | permanent magnet with 8 poles, 12.5 A at 14 V, charge light off at approx. 1400 rpm engine speed |
| Voltage regulator | 14 to 15 V, separately mounted, non-adjustable |
| Starter motor | Hitachi with built-in reduction, brushes new 16 mm, minimum 11 mm |
The CS86 is a swirl chamber diesel with a Diesel Kiki inline injection pump with 3 plungers and pintle nozzles.
Hinomoto C142 and C144 overhaul dimensions (CS86)
| Part | Dimension |
|---|---|
| Cylinder bore | 70.000 to 70.019 mm |
| Piston skirt | 69.91 to 69.93 mm |
| Piston pin | 23.990 to 23.996 mm |
| Piston clearance | 0.07 to 0.109 mm |
| Main journal | 59.960 to 59.985 mm |
| Crankpin journal | 47.960 to 47.980 mm |
| Bearing clearance | 0.03 to 0.095 mm, maximum 0.15 mm |
| Crankshaft end play | 0.1 to 0.3 mm |
The engine has 4 main bearings. Bearings are available in standard, 0.25 and 0.50 mm undersize. Pistons and rings are available in standard and 0.5 mm oversize. Bore out if the cylinder is more than 0.15 mm out-of-round or tapered. Mount the piston with the notch on top pointing forward.
When should the cylinder be bored out? When out-of-roundness or taper exceeds 0.15 mm. Then install pistons and rings in 0.5 mm oversize.
Tip: piston rings for the CS86 can be found as Piston rings 70 mm C142/C144 (SKU-95087), and for the CS100 as Piston rings 73 mm C172/C174 (SKU-95046).
Hinomoto C142 and C144 tractor data
| Specification | Value |
|---|---|
| Gearbox speeds | 3 forward and 1 reverse in 2 groups, giving 6 forward and 2 reverse |
| Steering ratio | 10:1 |
| Cooling system | 3.0 L |
| Engine oil with filter | 2.5 L (later engines with two drain plugs: 3.0 L) |
| Transmission, rear axle and hydraulics (shared) | approx. 17 L |
| PTO | 540 rpm with built-in freewheel |
| Battery | 12 V, negative earth |
