Kohler CV173

Kohler CV173The Kohler CV173 is a 173 cc (10.6 cu·in) single-cylinder air-cooled four-stroke internal combustion gasoline engine from the Command PRO series, manufactured by Kohler Co.

The Kohler CV173 engine has an OHV (overhead valve) design, an aluminum block with cast iron cylinder liners, vertical PTO-shaft, full-pressurized lubrication system. This engine is equipped with a fixed main jet carburetor and dependable electronic magneto ignition system.

A 70.0 mm (2.75 in) cylinder bore and 45.0 mm (1.80 in) piston stroke give the CV173 engine a total of 173 cc of displacement. The compression ratio rating is 8.0:1.

This engine produces 10.5 Nm (1.07 kg·m; 7.75 ft·lb) at 2,600 rpm of peak torque.

The breakdown of the engine code is as follows:

  • C – Command series
  • V – Vertical PTO shaft
  • 173 – Numerical designation

General information

Engine Specifications
Model Command PRO CV173
Type 4-stroke, OHV, single-cylinder
Displacement 173 cm 3 (10.6 cu-in)
Max. horsepower
Max. torque 10.5 Nm (1.07 kg·m; 7.75 ft·lb) at 2,600 rpm
Fuel system Carburetor with a fixed main jet
Cooling system Forced-air
Ignition system Dependable electronic magneto
Lubricating system Full-pressure lubrication
Starting system Recoil starter
Fuel used Unleaded gasoline (octane number 86 or higher)
Dimensions (L x W X H) 434 x 353 x 281 mm (17.1 x 13.9 x 11.1 in)
Dry weight 16.4 kg (36.2 lbs)

Cylinder Block and Head

Cylinder block
Compression ratio: 8.0:1
Bore x Stroke 70.0 mm X 45.0 mm (2.75 x 1.80 in)
Sleeve internal diameter 65.000-65.020 mm (2.559-2.560 in)
Number of piston rings (compression / oil): 2 / 1
Thrust face outer diameter 64.975-64.985 mm (2.5580-2.5584 in)
Piston pin outer diameter 12.990-12.996 mm (0.5114-0.5116 in)
Ring-to-groove side clearance: Top 0.010-0.020 mm (0.0004-0.0008 in)
Second 0.010-0.020 mm (0.0004-0.0008 in)
Ring end gap: Top 0.100-0.250 mm (0.0039-0.0098 in)
Second 0.100-0.250 mm (0.0039-0.0098 in)
Crankshaft main journal diameter:
Crankpin journal diameter: 25.985-25.995 mm (1.0230-1.0234 in)
Cylinder Head
Valve Arrangement: OHV, gear drive
Valves: 4 (2 per cylinder)
Valve head diameter: INTAKE 25.875-26.125 mm (1.0187-1.0285 in)
EXHAUST 23.875-24.125 mm (0.9399-0.9498 in)
Stem outer diameter: INTAKE 5.465-5.480 mm (0.2152-0.2157 in)
EXHAUST 5.465-5.480 mm (0.2152-0.2157 in)

Tightening torque specs

Tightening torque specs
Cylinder head (torque in 2 increments) Step 1: 13.0 Nm (1.3 kgf·m; 9.6 lb·ft)
Step 2: 20.7 Nm (2.1 kgf·m; 15.3 lb·ft)
Connecting rod 12.5 Nm (1.3 kgf·m; 9.2 lb·ft)
Flywheel 51.5 Nm (5.3 kgf·m; 38 lb·ft)
Spark plug 27.0 Nm (2.75 kg·m; 20.0 ft·lb)

Service Information

Valve clearance
Intake 0.0762-0.1270 mm (0.0030-0.0050 in)
Exhaust 0.0762-0.1270 mm (0.0030-0.0050 in)
Oil system
Oil type API SJ or higher
Recommended oil SAE 10W-30
Oil capacity 0.6 liters (0.63 US.qts, 0.53 Imp. qts)
Ignition system
Spark plug Kohler 1413214-S
Spark plug gap 0.76 mm (0.0300 in)
Ignition module air gap 0.254 mm (0.010 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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