The Kama 7GZ-4 is a 211 cc (12.88 cu.in.) single-cylinder air-coolled 4-stroke direct injection diesel outboat engine manufactured by WUXI WORLDBEST KAMA POWER CO., LTD.
The Kama 7GZ-4 engine has OHV design, single-cylinder, direct injection system, and recoil or electric starter. This engine is based on general-purpose engine KM170F.
The 7GZ-4 engine cylinder bore is 70.0 mm (2.76 in) and piston stroke is 55.0 mm (2.14 in). The engine produced 4.2 HP (3.1 kW) of maximum horsepower. The continuous rated output power is 3.8 HP (2.8 kW).
General information
| Engine Specifications | |
| Model | 7GZ-4 |
| Type | 4-stroke, single cylinder, diesel engine |
| Displacement | 505 cc (30.82 cu.in.) |
| Max. horsepower | 4.2 HP (3.1 kW |
| Rated Output Power | 3.8 HP (2.8 kW) |
| Output Mode | Horizontal shaft output |
| Transmission Mode | Direct drive |
| Exhaust Mode | Muffler exhaust |
| Cooling system | Forced-air |
| Lubricating system | Pressure spray compound |
| Starting system | Recoil or electric starter |
| Fuel used | Light diesel oil |
| Mounting Height (mm) | 600 / 800 / 900 / 1000 / 1200 / 1400 (optional) |
| Propeller Speed | ≥1400 rpm |
| Propeller Parameters | 2 x 216 mm |
| Applicable Ship Length | 4-7 m |
| Loading Capacity | ≤2.0 T |
Dimensions and Weight
| Length, mm (in) | – |
| Width, mm (in) | – |
| Height, mm (in) | – |
| Engine Weight, kg (lb) | ≤27.0 (59.5) |
| Overall Weight, kg (lb) | ≤61.0 (134.5) |
Maintenance data
| Engine | |
| Engine speed | 3,600 rpm |
| Oil system | |
| Oil type | Oil for 4-stroke engines (above CC grade) |
| Recommended oil | 10W-30 |
| Oil capacity | 0.75 l (0.16 gal.) |
| Gear Lubricant Type | API GL5: SAE80-90 |
| Fuel system | |
| Injection pressure | 200 kg/cm2 (19.6 MPa) |
| Fuel supply advance angle | 17°±1° |
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