The Kama KG290 is a 389 cc (23.74 cu.in.) single-cylinder air-coolled 4-stroke internal combustion small gasoline engine manufactured by WUXI WORLDBEST KAMA POWER CO., LTD.
The Kama KG390 has OHV design and recoil starter. The KG390 engine compression ratio rating is 8.5:1, cylinder bore and piston stroke are 88.0 mm (3.46 in) and 64.0 mm (2.52 in), respectively.
The Kama KG390 produced 10.5 HP (7.7 kW) at 3,600 rpm of maximum horsepower and 24.0 N·m (2.44 kg·m, 17.7 lbf·ft) at 2,500 rpm of peak torque.
General information
| Engine Specifications | |
| Model | KG270 |
| Type | 4-stroke, single cylinder |
| Displacement | 389 cm 3 (23.74 cu-in) |
| Max. horsepower | 10.5 HP (7.7 kW) at 3,600 rpm |
| Max. torque | 24.0 N·m (2.44 kg·m, 17.7 lbf·ft) at 2,500 rpm |
| Carburetor | Horizontal, butterfly valve |
| Cooling system | Forced-air |
| Lubricating system | Splash system |
| Starting system | Recoil starter |
| Stoping system | Ground switch |
| Fuel used | Unleaded gasoline (octane number 86 or higher) |
| Fuel tank capacity | 6.5 liters (6.87 US.qts, 5.72 Imp. qts) |
| PTO shaft rotation | Clockwise (view from flywheel) |
Dimensions and Weight
| Kama KG390 | |
| Length, mm (in) | 405 (15.9) |
| Width, mm (in) | 450 (17.7) |
| Height, mm (in) | 435 (17.1) |
| Weight, kg (lb) | 31.0 (68.2) |
Maintenance data
| Engine | |
| Engine speed | 3,600 ± 150 rpm |
| Oil system | |
| Oil type | Oil for 4-stroke engines (above CC grade) |
| Recommended oil | SAE 10W-30 |
| Oil capacity | 1.1 liters (1.16 US.qts, 0.97 Imp. qts) |
| Ignition system | |
| Spark plug | NGK: BP6ES Torch: F6T, T4196J |
| Spark plug gap | 0.6-0.7 mm (0.024-0.028 in) |
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