The Kohler SV470 is a single-cylinder air-cooled four-stroke internal combustion gasoline engine from the Courage series, manufactured by Kohler Co. The displacement of this engine is 477 cc (29.1 cu·in) for models SV470-00XX, 535 cc, (32.6 cu·in) for models SV470-01XX or 597 cc, (36.4 cu·in) for models SV470-02XX and higher.
The Kohler SV470 engine has an OHV (overhead valve) design, aluminum head and crankcase with cast iron cylinder liner, micro-polished crankshaft bearings, vertical PTO-shaft, and pressurized lubrication system. This engine is equipped with a carburetor with a fixed main jet and an electronic ignition system.
The cylinder bore is 84.0 mm (3.30 in) for SV470-00XX engines, 89.0 mm (3.50 in) for SV470-01X engines, or 94.0 mm (3.70 in) for models SV470-02XX and higher. The piston stroke is 86.0 mm (3.39 in) for all versions. The compression ratio rating is 8.5:1. The SV470 engine produced 15.2 PS (11.2 KW; 15.0 HP) at 3,600 rpm of horsepower and 36.6 Nm (3.73 kg·m; 27.0 ft·lb) of torque.
The breakdown of the engine code is as follows:
- S – Courage series
- V – Vertical PTO shaft
- 470 – Numerical designation
General information
Engine Specifications | |
Model | Courage SV470 |
Type | 4-stroke, OHV, single-cylinder |
Displacement | SV470-00XX: 477 cm3 (29.1 cu·in) SV470-01XX: 535 cm3 (32.6 cu·in) SV470-02XX and higher: 597 cm3 (36.4 cu-in) |
Max. horsepower | 15.2 PS (11.2 KW; 15.0 HP) at 3,600 rpm |
Max. torque | 36.6 Nm (3.73 kg·m; 27.0 ft·lb) |
Fuel system | Carburetor with a fixed main jet |
Cooling system | Forced-air |
Ignition system | Electronic ignition system |
Lubricating system | Pressurized lubrication |
Starting system | Electric starter |
Fuel used | Unleaded gasoline (octane number 86 or higher) |
Fuel tank capacity | – |
Cylinder Block and Head
Cylinder block | ||
Compression ratio: | 8.5:1 | |
Bore x Stroke | SV470-00XX: 84.0 X 86.0 mm (3.30 x 3.39 in) SV470-01XX: 89.0 X 86.0 mm (3.50 x 3.39 in) SV470-02XX and higher: 94.0 X 86.0 mm (3.70 x 3.39 in) | |
Sleeve internal diameter | SV470-00XX: 84.010-84.035 mm (3.307-3.308 in.) SV470-01XX: 89.010-89.035 mm (3.504-3.505 in.) SV470-02XX and higher: 94.010-94.035 mm (3.701-3.702 in) | |
Number of piston rings (compression / oil): | 2 / 1 | |
Piston pin outer diameter | 21.995-22.000 mm (0.8659-0.8661 in) | |
Main journal diameter | Flywheel End | Before S/N 3703200003: 44.913-44.935 mm (1.7682-1.7691 in) After S/N 3703200013: 44.870-44.895 mm (1.7665-1.7675 in) |
PTO End | Before S/N 3703200003: 41.913-41.935 mm (1.6501-1.6510 in) After S/N 3703200013: 41.855-41.880 mm (1.6478-1.6488 in) | |
Cylinder Head | ||
Valve Arrangement: | OHV | |
Valves: | 2 (2 per cylinder) | |
Valve head diameter: | INTAKE | 37.375-37.625 mm (1.4715-1.4813 in) |
EXHAUST | 32.125-32.375 mm (1.2648-1.2746 in) | |
Stem outer diameter: | INTAKE | 5.982-6.000 mm (0.2355-0.2362 in) |
EXHAUST | 5.970-5.988 mm (0.235-0.2357 in) |
Tightening torque specs
Tightening torque specs | |
Cylinder head bolt | Step 1: 20.5 Nm (2.1 kg·m; 15.1 ft·lb) Step 2: 41.0 Nm (4.2 kg·m; 30.3 ft·lb) |
Flywheel | M12: 88.0 Nm (9.0 kg·m; 65.0 ft·lb) M10: 66.5 Nm (6.7 kg·m; 48.7 ft·lb) |
Spark plug | 27 Nm (2.75 kg·m; 20.0 ft·lb) |
Service Information
Valve clearance | |
Intake valve clearance | 0.127 mm (0.005 in) |
Exhaust valve clearance | 0.178 mm (0.007 in) |
Oil system | |
Oil type | API SJ or higher |
Recommended oil | SAE 10W-30 |
Oil capacity | 1.5 L (1.59 US. qt, 1.32 Imp. qt.) |
Ignition system | |
Spark plug | Champion RC12YC |
Spark plug gap | 0.76 mm (0.030 in) |
We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.
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