The Kohler KT19 is a 770 cc, (46.98 cu·in) natural aspirated two-cylinders four-stroke air-cooled internal combustion small gasoline engine with a horizontal shaft, for general-purpose applications.
Cylinder bore is 79.25 mm (3.12 in) and piston stroke is 77.7 mm (3.06 in). The Kohler KT19 engine produced 19.3 PS (14.2 KW; 19.0 HP) at 3,600 rpm of maximum output power.
The Kohler KT19 features:
- L-head design
- Battery ignition system
- Kohler or Walbro carburetor
- Centrifugal governor
- Pressure lubrication system with oil filter
- Forced air cooling system
- Electric starter
The Kohler KT19 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 | |
| Engine model | KT19 |
| Engine type | 4-stroke, L-head, V-twin |
| Displacement | 770 cm3, (46.98 cu·in) |
| Max. horsepower | 19.3 PS (14.2 KW; 19.0 HP) at 3,600 rpm |
| Max. torque | – |
| Cooling system | Forced air |
| Air cleaner | Replaceable, paper element |
| Lubricating system | KT19 (49199 and lower): Pressurized spray system KT19 Series II (49200 and higher): Full-pressure system |
| Ignition system | Battery ignition system |
| Fuel system | Kohler or Walbro carburetor |
| Fuel consumption | – |
| Fuel tank capacity | – |
| Fuel used | Gasoline (octane number 86 or higher) |
| Starting system | Electric starter, 12V |
| Governor | Centrifugal governor |
| PTO shaft rotation | Counterclockwise (from PTO shaft side) |
| Dimensions (L x W X H) | – |
| Dry weight | 54.9 kg (121 lbs) |
Cylinder Block and Head
| Cylinder block | |
| Compression ratio: | – |
| Cylinder bore: | 79.25 mm (3.12 in) |
| Piston stroke: | 77.7 mm (3.06 in) |
| Cylinder internal diameter (standard): | 79.375 mm (3.125 in) |
| Piston skirt outer diameter (standard): | 79.159 mm (3.116 in) |
| Number of piston rings (compression / oil): | 2/1 |
| Side clearance (Top): | 0.051-0.200 mm (0.002-0.004 in) |
| Side clearance (Second): | 0.025-0.077 mm (0.001-0.003 in) |
| Side clearance (Oil): | 0.025-0.077 mm (0.001-0.003 in) |
| Ring end gap (Top): | 0.2530-0.5820 mm (0.01-0.0229 in) |
| Ring end gap (Second): | 0.2530-0.5820 mm (0.01-0.0229 in) |
| Crankshaft main bearing (new): | 44.226-44.252 mm (1.7412-1.7422 in) |
| Crankpin diametr: | KT19: 34.882-34.895 mm (1.3733-1.3738 in) KT19 Series II: 38.082-38.095 mm (1.4993-1.4998 in) |
| Cylinder head | |
| Valve arrangement: | L-head |
| Valves: | 2,(4 valves in total) |
| Valve head diameter (INTAKE): | 34.798-35.052 mm (1.370-1.380 in) |
| Valve head diameter (EXHAUST): | 34.798-35.052 mm (1.370-1.380 in) |
| Valve Minimum Lift-Zero Lash (INTAKE): | 7.11 mm (0.280 in) |
| Valve Minimum Lift-Zero Lash (EXHAUST): | 7.11 mm (0.280 in) |
Tightening torque settings:
- Cylinder Head: 20.0-27.0 Nm; 15.0-20.0 ft·lb;
- Connecting Rods (New): 16.0 Nm; 12.0 ft·lb;
- Connecting Rods (Used): 11.0 Nm; 8.3 ft·lb;
- Flywheel Screw: 54.0 Nm; 40.0 ft·lb;
- Manifold Screw/Nut: 17 Nm; 12.5 ft·lb;
- Spark Plugs: 14-20 Nm; 1.4-2 kgf·m; 10.3-14.8 ft·lb
Service Data
| Valve clearance | |
| Intake valve clearance: | 0.076-0.152 mm (0.003-0.006 in) |
| Exhaust valve clearance: | 0.278-0.354 mm (0.011-0.014 in) |
| Oil system | |
| Lubrication system: | KT19 (49199 and lower): Pressurized spray system KT19 Series II (49200 and higher): Full-pressure system |
| Oil type: | SF or SG |
| Recommended oil: | 5W-20, 5W-30, 10W-30, 10W-40 |
| Oil capacity: | 1.4 L (1.48 US. qt, 1.23 Imp. qt.) |
| Oil pressure: | More then 3.5 kg/cm2, 50 psi |
| Fuel system | |
| Fuel pump type | Mechanical |
| Fuel filter type | In-line |
| Type: | Kohler or Walbro carburetor |
| Main fuel: | Kohler: 2-1/2 turns Walbro (fixed jet): Not adjust Walbro (adjustable jet): 1 turn |
| Low idle: | Kohler: 1 turn Walbro: 1-1/4 turns |
| Ignition system | |
| Type: | Battery ignition system |
| Spark plug: | Champion RV15YC, RBL15Y |
| Spark plug gap: | 0.635 mm (0.025 in) |
| Spark plug torque: | 14-20 Nm; 1.4-2 kgf·m; 10.3-14.8 ft·lb |
| Breaker point gap | 0.432-0.580 mm (0.017-0.023 in) |
References
1. Kohler twin cylinder engines: Models KT17&KT19 Series II and models KT17, KT19, KT21 service manual. Kohler Co.
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