The Kohler M16 is a 588 cc (35.9 cu·in) single-cylinder air-cooled four-stroke internal combustion gasoline engine from the Magnum-series, manufactured by Kohler Co.
The Kohler M16 engine has an L-head (side valve) design and a horizontal PTO shaft. This engine is equipped with the Kohler-build side-draft carburetor with an adjustable jet and an electronic magneto ignition system. The M16 engine used a high-density paper air cleaner.
The cylinder bore is 95.25 mm (3.75 in) and the piston stroke is 82.6 mm (3.25 in). The compression ratio rating is 7.3:1. This engine produced 16.2 PS (11.9 kW; 16.0 HP) at 3,600 rpm of horsepower.
The breakdown of the engine code is as follows:
- M – M-series
- 16 – 16.0 HP horsepower
- Suffix (engine is available with the following options):
S – Electric starter;
T – Retractable starter;
ST – Electric and retractable starter;
G – Tapered crankshaft (Generator applications);
P – Threaded crankshaft (Pump applications);
R – Reduction gear unit;
EP – Generator;
General information
Engine Specifications | |
Model | M16 |
Type | 4-stroke, L-head, single cylinder |
Displacement | 588 cm 3 (35.88 cu-in) |
Max. horsepower | 16.2 PS (11.9 kW; 16.0 HP) at 3,600 rpm |
Max. torque (crank PTO) | – |
Fuel system | Side-draft carburetor |
Cooling system | Forced-air |
Ignition system | Electronic magneto ignition system |
Lubricating system | Splash type |
Starting system | Recoil or electric starter |
Fuel used | Unleaded gasoline (octane number 86 or higher) |
Fuel tank capacity | 5.7 liters (1.5 US gal, 1.3 Imp. gal) |
Cylinder Block and Head
Cylinder block | ||
Compression ratio: | 7.3:1 | |
Bore x Stroke | 95.25 X 82.6 mm (3.75 x 3.25 in) | |
Sleeve internal diameter | 95.2373-95.2627 mm (3.7495-3.7505 in) | |
Piston skirt outer diameter | 95.1357-95.1610 mm (3.7455-3.7465 in) | |
Number of piston rings (compression / oil): | 2 / 1 | |
Ring end gap | Top | 0.254-0.508 mm (0.010-0.020 in) |
Second | 0.254-0.508 mm (0.010-0.020 in) | |
Connecting rod small end ID | 22.2428-2.2505 mm (0.8757-0.0886 in) | |
Piston pin outer diameter | 22.2300-22.2377 mm (0.8752-0.8755 in) | |
Cylinder Head | ||
Valve Arrangement: | L-head (sidevalve) | |
Valves: | 2 | |
Valve minimum lift – Zero lash: | INTAKE | 8.07 mm (0.318 in) |
EXHAUST | 8.07 mm (0.318 in) | |
Stem outer diameter (standard): | INTAKE | 7.887-7.899 mm (0.3105-0.3110 in) |
EXHAUST | 7.833-7.851 mm (0.3084-0.3091 in) |
Tightening torque specs
Tightening torque specs | |
Cylinder head bolt | 34-41 Nm; 3.5-4.2 kg·m; 25-30 ft·lb |
Spark plug | 25-30 Nm; 2.55-3.06 kg·m; 18-22 ft·lb |
Service Information
Engine | |
Max speed | 3,600 rpm |
Valve clearance | |
Intake valve clearance | 0.20-0.25 mm (0.0079-0.0098 in) |
Exhaust valve clearance | 0.43-0.48 mm (0.0169-0.0189 in) |
Oil system | |
Oil type | API SF or SG |
Recommended oil | Summer: SAE 30W Winter: SAE 5W-20, 5W-30 |
Oil capacity | 1.9 L (2.0 US. qt, 1.67 Imp. qt.) |
Ignition system | |
Spark plug | Champion: RH10 |
Spark plug gap | 0.65 mm (0.0256 in) |
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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