The Kohler CV742 is a 747 cc (45.6 cu·in) natural aspirated V-twin four-stroke air-cooled internal combustion small gasoline engine from the Command PRO series with a vertical shaft, manufactured by Kohler Co for general-purpose applications.
A 83.0 mm (3.27 in) cylinder bore and 69.0 mm (2.72 in) piston stroke give the CV742 engine a total of 747 cc of displacement. The compression ratio rating is 9.1:1.
The CV742 engine produces 25.3 PS (18.6 KW; 25.0 HP) at 3,600 rpm of maximum horsepower and 55.3 Nm (5.64 kg·m; 40.81 ft·lb) at 3,000 rpm of peak torque.
The Kohler CV742 features:
- OHV design
- Hydraulic valve lifters
- Aluminum cylinder block
- Cast iron cylinder liners
- Hardened crank journals
- PTO side-load sleeve bearing
- CDI or MDI ignition system
- Two-barrel side-draft carburetor with fixed main jets (Walbro)
- Mechanical centrifugal governor
- Full pressure lubrication system
- Forced air cooling system
- Electric starter
General information
Engine Specifications | |
Engine model | Command PRO CV742 |
Engine type | 4-stroke, OHV, V-twin |
Displacement | 747 cm3, (45.6 cu·in) |
Max. horsepower | 25.3 PS (18.6 KW; 25.0 HP) at 3,600 rpm |
Max. torque | 55.3 Nm (5.64 kg·m; 40.81 ft·lb) at 3,000 rpm |
Cooling system | Forced air |
Air cleaner | High-efficiency, heavy-duty air filters |
Lubricating system | Full pressure |
Ignition system | Fixed timing CDI or MDI ignition system |
Fuel system | Two-barrel side-draft carburetor with fixed main jets (Walbro) |
Fuel used | Unleaded gasoline (octane number 86 or higher) |
Starting system | Electric starter |
Governor | Mechanical centrifugal governor |
PTO shaft rotation | Counterclockwise (from PTO shaft side) |
Dimensions (L x W X H) | 521 x 413 x 506 mm (20.5 x 16.2 x 19.9 in) |
Dry weight | 48.0 kg (105.0 lbs) |
Cylinder Block and Head
Cylinder block | |
Compression ratio: | 9.1:1 |
Cylinder bore: | 83.0 mm (3.27 in) |
Piston stroke: | 69.0 mm (2.72 in) |
Cylinder internal diameter (standard): | 82.988-83.013 mm (3.2672-3.2682 in) |
Number of piston rings (compression / oil): | 2/1 |
Piston pin diameter: | 16.995-17.000 mm (0.6691-0.6693 in) |
Thrust face outer diameter (standard): | 82.978 mm (3.2668 in) |
Side clearance (Top): | 0.030-0.070 mm (0.0010-0.0026 in) |
Side clearance (Second): | 0.030-0.070 mm (0.0010-0.0026 in) |
Side clearance (Oil): | 0.060-0.190 mm (0.0022-0.0073 in) |
Ring end gap (Top): | 0.189-0.277 mm (0.0074-0.0109 in) |
Ring end gap (Second): | 1.519-1.797 mm (0.0598-0.0708 in) |
Crankshaft | |
Number of main bearings: | 2 |
Crankshaft main journal diameter: | 40.913-40.935 mm (1.6107-1.6116 in) |
Crankpin journal diameter: | 35.955-35.973 mm (1.4155-1.4163 in) |
Cylinder head | |
Valve arrangement: | OHV, gear driven |
Valves: | 2 (4 valves in total) |
Valve head diameter (INTAKE): | 33.370-33.630 mm (1.3138-1.324 in) |
Valve head diameter (EXHAUST): | 29.370-29.630 mm (1.1563-1.1665 in) |
Valve seat angle (INTAKE): | 89° |
Valve seat angle (EXHAUST): | 89° |
Valve seat angle (INTAKE): | 45° |
Valve seat angle (EXHAUST): | 45° |
Valve steam diameter (INTAKE): | 6.982-7.000 mm (0.2749-0.2756 in) |
Valve steam diameter (EXHAUST): | 6.970-6.988 mm (0.2744-0.2751 in) |
Valve lift minimal (INTAKE): | 8.07 mm (0.3177 in) |
Valve lift minimal (EXHAUST): | 8.07 mm (0.3177 in) |
Camshaft journal diameter : | 19.962-19.975 mm (0.7859-0.7864 in) |
Tightening torque specs
Tightening torque specs | |
Intake manifold mounting (torque in 2 increments) | Step 1: 7.4 Nm (0.75 kg·m; 5.5 ft·lb) Step 2: 9.9 Nm (1.00 kg·m; 7.3 ft·lb) |
Connecting rod cap fastener | 13.6 Nm (1.4 kgf·m; 10.0 lb·ft) |
Cylinder head | Nut (torque in 2 increments): Step 1: 16.9 Nm (1.72 kg·m; 12.5 ft·lb) Step 2: 35.5 Nm (3.62 kg·m; 26.2 ft·lb) Bolt (torque in 2 increments) Step 1: 22.6 Nm (2.31 kg·m; 16.7 ft·lb) Step 2: 41.8 Nm (4.26 kg·m; 30.8 ft·lb) |
Fan | 9.9 Nm (1.0 kg·m; 7.3 ft·lb) |
Flywheel | 66.4 Nm (6.77 kg·m; 49.0 ft·lb) |
Governor lever nut | 6.8 Nm (0.69 kg·m; 5.02 ft·lb) |
Muffler retaining nuts | 24.4 Nm (2.5 kg·m; 18.0 ft·lb) |
Spark plug | 27 Nm (2.75 kg·m; 20.0 ft·lb) |
Service Data
Engine | |
Maximum speed: | 3600±50 rpm |
Idle speed: | 1200±75 rpm |
Oil system | |
Lubrication system: | Full pressure |
Oil type: | API SG, SH, SJ, or higher |
Recommended oil: | SAE 10W-30 |
Oil capacity: | W/o oil filter: 1.7 L (1.8 US. qt, 1.5 Imp. qt.) With oil filter: 1.9 L (2.0 US.qts, 1.7 Imp. qts) |
Fuel system | |
Type: | Two-barrel side-draft carburetor with fixed main jets (Walbro) |
Fuel pump: | Pulse type |
Fuel filter: | In-line |
Ignition system | |
Type: | Fixed timing CDI or MDI ignition system |
Spark plug: | Champion RC12YC |
Spark plug gap: | 0.76 mm (0.030 in) |
Ignition coil air gap | 0.280-0.330 mm (0.011-0.013 in) |
References
1. Kohler Command PRO CV682, CV732, CV742, CV752 service manual. Kohler Co. 2021.
We try to use official documentation and verify the published data, but errors may occur. In addition, specifications of machinery and equipment may vary depending on markets and modifications. We do not recommend the use of this data for spare parts or repairs. Use official service manuals or parts catalogs for your product.
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