The Kohler CH395 is a 277 cc (16.9 cu·in) single-cylinder air-cooled four-stroke internal combustion gasoline engine from the Command PRO series, manufactured by Kohler Co.
The Kohler CH395 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 7.4 liters (7.82 US.qts, 6.51 Imp. qts).
A 78.0 mm (3.10 in) cylinder bore and 58.0 mm (2.30 in) piston stroke give the CH395 engine a total of 277 cc of displacement. The compression ratio rating is 8.5:1.
This engine produces 9.7 PS (7.1 KW; 9.5 HP) at 4,000 rpm of maximum horsepower and 18.8 Nm (1.9 kg·m; 13.9 ft·lb) at 2,800 rpm of peak torque.
This engine is available in dual-fuel and tri-fuel conversion, as the Kohler CH395DF or CH395TF engine, respectively. It is designed to operate on gasoline and propane or gasoline, propane and natural gas fuels with installation of dual-fuel or tri-fuel conversion kit.
The breakdown of the engine code is as follows:
- C – Command series
- H – Horizontal PTO shaft
- 395 – Numerical designation
General information
| Engine Specifications | |
| Model | Command PRO CH395 |
| Type | 4-stroke, OHV, single-cylinder |
| Displacement | 277 cm 3 (16.9 cu-in) |
| Max. horsepower | 9.7 PS (7.1 KW; 9.5 HP) at 4,000 rpm CH395DF (liquid propane): 8.7 PS (6.4 KW; 8.6 HP) at 4,00 rpm |
| Max. torque | 18.8 Nm (1.9 kg·m; 13.9 ft·lb) at 2,800 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) | 404 x 427 x 424 mm (15.9 x 16.8 x 16.7 in) |
| Dry weight | 27.8 kg (61.5 lbs) |
Cylinder Block and Head
| Cylinder block | ||
| Compression ratio: | CH395: 8.5:1 CH395DF, CH395TF: 8.8:1 | |
| Bore x Stroke | 78.0 mm X 58.0 mm (3.10 x 2.30 in) | |
| Sleeve internal diameter | 78.000-78.015 mm (3.0709-3.0714 in) | |
| Number of piston rings (compression / oil): | 2 / 1 | |
| Thrust face outer diameter | 77.955-77.975 mm (3.069-3.070 in) | |
| Piston pin outer diameter | 17.992-17.998 mm (0.7083-0.7084 in) | |
| Ring-to-groove side clearance: | Top | 0.070 mm (0.0030 in) |
| Second | 0.070 mm (0.0030 in) | |
| Oil | 0.050-0.190 mm (0.0019-0.0075 in) | |
| Ring end gap: | Top | 0.250-0.400 mm (0.0100-0.0160 in) |
| Second | 0.650-0.800 mm (0.0260-0.0320 in) | |
| Crankshaft main journal diameter: | PTO end: 29.975-29.989 mm (1.1801-1.1807 in) Flywheel end: 30.014-30.027 mm (1.1817-1.1822 in) | |
| Crankpin journal diameter: | 32.975-32.985 mm (1.2982-1.2986 in) | |
| Cylinder Head | ||
| Valve Arrangement: | OHV | |
| Valves: | 2 | |
| Valve head diameter: | INTAKE | 30.875-31.125 mm (1.2156-1.2254 in) |
| EXHAUST | 26.875-27.125 mm (1.0581-1.0679 in) | |
| Stem outer diameter: | INTAKE | 6.560-6.575 mm (0.2583-0.2589 in) |
| EXHAUST | 6.560-6.575 mm (0.2583-0.2589 in) | |
| Cam lobe profile: | INTAKE | 32.408 mm (1.276 in) |
| EXHAUST | 32.120 mm (1.265 in) | |
Tightening torque specs
| Tightening torque specs | |
| Cylinder head (torque in 2 increments) | Step 1: 18.0 Nm (1.8 kgf·m; 13.3 lb·ft) Step 2: 36.0 Nm (3.7 kgf·m; 26.6 lb·ft) |
| Connecting rod | 20.0 Nm (2.0 kgf·m; 14.8 lb·ft) |
| Flywheel | 113.0 Nm (11.5 kgf·m; 83.4 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 | 1.1 liters (1.16 US.qts, 0.97 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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