Kohler SV840

Kohler SV840The Kohler SV840 is a 725 cc, (44.2 cu·in) V-twin air-cooled four-stroke internal combustion gasoline engine from the Courage PRO series, manufactured by Kohler Co. This engine was designed for heavy-duty commercial use.

The Kohler SV840 engine has an OHV (overhead valve) design, vertical PTO-shaft, heat-treated bearings, and a pressurized lubrication system. This engine is equipped with a carburetor with a fixed main jet and one of three ignition systems: Fixed Ignition System, Digital Spark Advance Ignition (DSAI), Digital Spark Advance Module (DSAM). This engine is equipped with large-capacity professional filters: 60% larger air and oil filters and 70% larger fuel filter than the Courage-series.

The cylinder bore is 83.0 mm (3.27 in) and the piston stroke is 67.0 mm (2.64 in). The compression ratio rating is 9.0:1. This engine produced 27.3 PS (20.1 KW; 27.0 HP) at 3,600 rpm of horsepower and 61.5 Nm (6.3 kg·m; 45.4 ft·lb) at 2,400 rpm of torque.

The breakdown of the engine code is as follows:

  • S – Courage series
  • V – Vertical PTO shaft
  • 840 – Numerical designation

General information

Engine Specifications
ModelCourage PRO SV840
Type4-stroke, OHV, V-twin
Displacement725 cm 3 (44.2 cu-in)
Max. horsepower27.3 PS (20.1 KW; 27.0 HP) at 3,600 rpmm
Max. torque61.5 Nm (6.3 kg·m; 45.4 ft·lb) at 2,400 rpm
Fuel systemCarburetor with a fixed main jet
Cooling systemForced-air
Ignition system Fixed Ignition System,
Digital Spark Advance Ignition (DSAI),
Digital Spark Advance Module (DSAM)
Lubricating systemPressurized lubrication
Starting systemElectric starter
Fuel usedUnleaded gasoline (octane number 86 or higher)
Fuel tank capacity

Cylinder Block and Head

Cylinder block
Compression ratio:9.0:1
Bore x Stroke83.0 X 67.0 mm (3.27 x 2.64 in)
Sleeve internal diameter83.006-83.031 mm (3.2679-3.2689 in)
Number of piston rings (compression / oil):2 / 1
Connecting rod small end ID17.015-17.023 mm (0.6699-0.6702 in)
Piston pin outer diameter16.995-17.000 mm (0.6691-0.6693 in)
Cylinder Head
Valve Arrangement:OHV
Valves:4 (2 per cylinder)
Stem outer diameter:INTAKE6.982-7.000 mm (0.2749-0.2756 in)
EXHAUST6.970-6.988 mm (0.2744-0.2751 in)

Tightening torque specs

Tightening torque specs
Cylinder head bolt Step 1: 22.6 Nm (2.3 kg·m; 16.7 ft·lb)
Step 2: 41.8 Nm (4.3 kg·m; 30.8 ft·lb)
Flywheel74.5 Nm (7.6 kg·m; 55.0 ft·lb)
Spark plug27 Nm (2.75 kg·m; 20.0 ft·lb)

Service Information

Valve clearance
Intake valve clearance0.101-0.152 mm (0.004-0.006 in)
Exhaust valve clearance0.101-0.152 mm (0.004-0.006 in)
Oil system
Oil typeAPI SJ or higher
Recommended oilSAE 10W-30
Oil capacity1.6-1.8 L (1.7-1.9 US. qt, 1.4-1.6 Imp. qt.)
Ignition system
Spark plugChampion RC12YC or DENSO K16PR-U
Spark plug gap0.76 mm (0.030 in)
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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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