Kohler CH245

Kohler CH245The Kohler CH245 is a 177 cc (10.8 cu·in) single-cylinder air-cooled four-stroke internal combustion gasoline engine from the Command PRO series, manufactured by Kohler Co.

The Kohler CH245 engine has an OHV (overhead valve) design, an aluminum block with cast iron cylinder liners, a horizontal PTO-shaft, splash type lubrication system. This engine is equipped with a fixed main jet carburetor and dependable electronic magneto ignition system. Fuel tank capacity is 3.0 liters (3.1 US.qts, 2.6 Imp. qts).

A 68.0 mm (2.70 in) cylinder bore and 49.0 mm (1.90 in) piston stroke give the CH245 engine a total of 177 cc of displacement. The compression ratio rating is 8.5:1.

This engine produces 4.5 PS (3.3 KW; 4.4 HP) at 3,600 rpm of maximum horsepower and 7.2 Nm (0.73 kg·m; 5.30 ft·lb) at 2,600 rpm of peak torque.

The breakdown of the engine code is as follows:

  • C – Command series
  • H – Horizontal PTO shaft
  • 245 – Numerical designation

General information

Engine Specifications
Model Command PRO CH245
Type 4-stroke, OHV, single-cylinder
Displacement 177 cm 3 (10.8 cu-in)
Max. horsepower 4.5 PS (3.3 KW; 4.4 HP) at 3,600 rpm
Max. torque 7.2 Nm (0.73 kg·m; 5.30 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 Splash type
Starting system Recoil starter
Fuel used Unleaded gasoline (octane number 86 or higher)
Dimensions (L x W X H) 296 x 354 x 318 mm (11.6 x 13.9 x 12.5 in)
Dry weight 15.0 kg (33.2 lbs)

Cylinder Block and Head

Cylinder block
Compression ratio: 8.5:1
Bore x Stroke 68.0 mm X 49.0 mm (2.70 x 1.90 in)
Sleeve internal diameter 68.027-68.035 mm (2.6280-2.6785 in)
Number of piston rings (compression / oil): 2 / 1
Thrust face outer diameter 67.975-67.985 mm (2.6762-2.6766 in)
Piston pin outer diameter 17.992-17.995 mm (0.7083-0.7084 in)
Ring-to-groove side clearance: Top 0.040-0.150 mm (0.0020-0.0060 in)
Second 0.040-0.150 mm (0.0020-0.0060 in)
Oil 0.050-0.190 mm (0.0019-0.0075 in)
Ring end gap: Top 0.325-0.400 mm (0.0130-0.0160 in)
Second 0.325-0.400 mm (0.0130-0.0160 in)
Crankshaft main journal diameter: 24.975-24.989 mm (0.9833-0.9838 in)
Crankpin journal diameter: 24.975-24.989 mm (0.9833-0.9838 in)
Cylinder Head
Valve Arrangement: OHV
Valves: 2
Valve head diameter: INTAKE 24.875-25.125 mm (0.9793-0.9892 in)
EXHAUST 23.800-24.200 mm (0.9370-0.9527 in)
Stem outer diameter: INTAKE 5.474 mm (0.2155 in)
EXHAUST 5.464 mm (0.2151 in)
Cam lobe profile: INTAKE 27.608 mm (1.0870 in)
EXHAUST 27.770 mm (1.0930 in)

Tightening torque specs

Tightening torque specs
Cylinder head (torque in 2 increments) Step 1: 12.0 Nm (1.2 kgf·m; 8.9 lb·ft)
Step 2: 24.0 Nm (2.4 kgf·m; 17.7 lb·ft)
Connecting rod 12.5 Nm (1.3 kgf·m; 9.2 lb·ft)
Flywheel 74.0 Nm (7.5 kgf·m; 54.6 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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