Kohler KT17

Kohler KT17The Kohler KT17 is a 691 cc (42.18 cu·in) two-cylinder air-cooled four-stroke internal combustion gasoline engine from the K-series, manufactured by Kohler Co.

The Kohler KT17 engine has an L-head (side valve) design and a horizontal PTO shaft. This engine is equipped with the side-draft carburetor with adjustable jet and an battery ignition system.

The cylinder bore is 79.25 mm (3.12 in) and the piston stroke is 69.85 mm (2.75 in).

This engine produced 17.3 PS (12.7 KW; 17.0 HP) at 3,600 rpm of horsepower.

The breakdown of the engine code is as follows:

  • KT – K-series
  • 17 – 17.0 HP horsepower
  • Suffix (engine is available with the following options):
    S – Electric starter;
    G – Tapered crankshaft;
    P – Threaded crankshaft;
    EP – Electric plant;
    Q – Quilet model;

General information

Engine Specifications
Type4-stroke, L-head, two-cylinder
Displacement691 cm 3 (42.18 cu-in)
Max. horsepower17.3 PS (12.7 KW; 17.0 HP) at 3,600 rpm
Max. torque (crank PTO)
Fuel systemSide-draft carburetor
Cooling systemForced-air
Ignition systemBattery ignition system
Lubricating system KT17 (24299 and lower): Pressurized spray system
KT17 Series II (24300 and higher): Full-pressure system
Starting systemElectric starter
Fuel usedUnleaded gasoline (octane number 86 or higher)
Weight53.5 kg (118 lbs)

Cylinder Block and Head

Cylinder block
Compression ratio:
Bore x Stroke79.25 mm X 69.85 mm (3.12 x 2.75 in)
Sleeve internal diameter79.375 mm (3.125 in)
Piston skirt outer diameter79.159 mm (3.116 in)
Number of piston rings (compression / oil):2 / 1
Ring end gapTop0.253-0.508 mm (0.010-0.020 in)
Second0.253-0.508 mm (0.010-0.020 in)
Connecting rod small end diametr15.891 mm (0.6256 in)
Crankshaft main bearing (new)44.226-44.252 mm (1.7412-1.7422 in)
Connecting rod crankpin bore34.925-34.943 mm (1.3750-1.3757 in)
Cylinder Head
Valve Arrangement:L-head (sidevalve)
Valve minimum lift – Zero lash:INTAKE7.11 mm (0.280 in)
EXHAUST7.11 mm (0.280 in)
Valve head diameter:INTAKE34.798-35.052 mm (1.370-1.380 in)
EXHAUST34.798-35.052 mm (1.370-1.380 in)

Tightening torque specs

Tightening torque specs
Cylinder head bolt20-27 Nm; 2-2.8 kgf·m; 14.8-19.9 ft·lb
Spark plug14-20 Nm; 1.4-2 kgf·m; 10.3-14.8 ft·lb

Service Information

Max speed3,600 rpm
Valve clearance
Intake valve clearance0.076-0.152 mm (0.003-0.006 in)
Exhaust valve clearance0.278-0.354 mm (0.011-0.014 in)
Oil system
Oil typeAPI SF or SG
Recommended oil Summer: SAE 30W
Winter: SAE 5W-20, 5W-30
Oil capacity (with filter)1.4 L (1.48 US. qt, 1.23 Imp. qt.)
Ignition system
Spark plugChampion: RV15YC
Spark plug gap0.635 mm (0.025 in)
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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