Kohler ELH750

Kohler ELH750The Kohler ELH750 is a 747 cc, (45.6 cu·in) V-twin liquid-cooled four-stroke internal combustion gasoline engine from the Aegis series, manufactured by Kohler Co.

The Kohler ELH750 engine has an OHV (overhead valve) design, horizontal PTO-shaft, pressurized lubrication system with oil pump. This engine is equipped with an electronic fuel injection (EFI) system and an electronic ignition system.

It has an 83.0 mm (3.30 in) cylinder bore and 69.0 mm (2.70 in) piston stroke. The compression ratio rating is 8.7:1. This engine produced 27.3 PS (20.1 KW; 27.0 HP) at 3,600 rpm of gross horsepower and 58.2 Nm (5.94 kg·m; 42.95 ft·lb) at 2,400 rpm of peak torque.

The breakdown of the engine code is as follows:

  • E – EFI
  • L – Liquid-cooled
  • H – Horizontal PTO shaft
  • 750 – Numerical designation

General information

Engine Specifications
Model AEGIS ELH750
Type 4-stroke, OHV, V-twin
Displacement 747 cm 3 (45.6 cu-in)
Max. horsepower 27.3 PS (20.1 KW; 27.0 HP) at 3,600 rpm
Max. torque 58.2 Nm (5.94 kg·m; 42.95 ft·lb) at 2,400 rpm
Fuel system Electronic fuel injection (EFI) system
Cooling system Liquid-cooled
Ignition system Electronic ignition system
Lubricating system Pressurized lubrication
Starting system Electric starter
Fuel used Unleaded gasoline (octane number 86 or higher)

Cylinder Block and Head

Cylinder block
Compression ratio: 8.7:1
Bore x Stroke 83.0 X 69.0 mm (3.30 x 2.70 in)
Sleeve internal diameter 83.006-83.031 mm (3.2679-3.2689 in)
Number of piston rings (compression / oil): 2 / 1
Piston type A
Piston skirt outer diameter 82.973-82.991 mm (3.2666-3.2673 in)
Connecting rod small end ID 17.006-17.013 mm (0.6695-0.6698 in)
Piston pin outer diameter 16.995-17.000 mm (0.6691-0.6693 in)
Side clearance: Top 0.014-0.041 mm (0.0005-0.0016 in)
Second 0.012-0.039 mm (0.0004-0.0015 in)
Oil 0.026-0.176 mm (0.0010-0.0070 in)
Ring end gap: Top 0.250-0.560 mm (0.0098-0.02200 in)
Second 0.250-0.560 mm (0.0098-0.02200 in)
Piston type B
Piston skirt outer diameter 82.978 mm (3.1483 in)
Connecting rod small end ID 17.006-17.013 mm (0.6695-0.6698 in)
Piston pin outer diameter 16.995-17.000 mm (0.6691-0.6693 in)
Side clearance: Top 0.030-0.070 mm (0.0010-0.0026 in)
Second 0.030-0.070 mm (0.0010-0.0026 in)
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)
Second 1.519-1.797 mm (0.0598-0.0708 in)
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 drive
Valves: 4 (2 per cylinder)
Valve head diameter: INTAKE 33.370-33.630 mm (1.3138-1.324 in)
EXHAUST 29.370-29.630 mm (1.1563-1.1665 in)
Stem outer diameter: INTAKE 6.982-7.000 mm (0.2749-0.2756 in)
EXHAUST 6.970-6.988 mm (0.2744-0.2751 in)

Tightening torque specs

Tightening torque specs
Cylinder head bolt Step 1: 16.9 Nm (1.72 kg·m; 12.47 ft·lb)
Step 2: 33.9 Nm (3.46 kg·m; 25.02 ft·lb)
Flywheel 66.4 Nm (6.77 kg·m; 49.0 ft·lb)
Spark plug 27 Nm (2.75 kg·m; 20.0 ft·lb)

Service Information

Oil system
Oil type API SG, SH, SJ, or higher
Recommended oil SAE 10W-30
Oil capacity W/o oil filter: 1.6 liters (1.7 US.qts, 1.4 Imp. qts)
With oil filter: 1.8 liters (1.9 US.qts, 1.58 Imp. qts)
Cooling system
Type Pressurized cooling system with integrated belt-driven water pump
Coolant capacity 2.0 liters (2.1 US.qts, 1.8 Imp. qts)
Ignition system
Spark plug Champion RC14YC
Spark plug gap 0.76 mm (0.030 in)
Ignition module air gap 0.2-0.3 mm (0.008-0.012 in)
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