| MODEL | KT170F(E) | KT178F(E) | KT186FA(E) |
| Engine Type | Single-cylinder, 4-stroke, air-cooled diesel engine |
| Combustion System | Direct injection |
| Bore*Stroke (mm) | 70*55 | 78*62 | 86*72 |
| Displacement (cc) | 211 | 296 | 418 |
| Max. Output (hp/rpm) | 4.2/3600 | 6.0/3600 | 9.4/3600 |
| Cont. Output (hp/rpm) | 3.8/3600 | 5.4/3600 | 8.6/3600 |
| Fuel consumption (g/hp.h) | 220 | 215 | 210 |
| Lubrication Oil | SAE 10W/30 |
| Lubrication Oil Volume (L) | 0.8 | 1.1 | 1.65 |
| Lubrication System | Forced lubrication via trochoids pump |
| Cooling System | Forced-air |
| Starting System | Recoil / Electric starter |
| Governor System | All-speed type, Mechanical Governor |
| Fuel Tank Capacity (L) | 2.5 | 3.5 | 5.5 |
| Noise Level at 7m (dB) | 93 | 95 | 97 |
| Gross Weight (kg) | 25 | 35 | 45 |
| Gross Weight (electric) (kg) | 30 | 40 | 50 |
| DIM (L*M*H) (mm) | 430*390*460 | 470*460*530 | 520*470*560 |