The Zongshen GB680 is a 679 cc, (41.44 cu·in) V-twin air-cooled 4-stroke internal combustion small gasoline engine, from GB-series manufactured by Zongshen Power Co. for general-purpose applications.
The Zongshen GB680 engine has an overhead valve (OHV) design, carburetor fuel system, transistorized ignition system, and recoil or electric starter. The cylinder bore is 78.0 mm (3.07 in) and the piston stroke is 71.0 mm (2.8 in). Compression ratio rating is 8.5:1.
The Zongshen GB680 produced 19.7 PS (14.5 kW; 19.4 HP) at 3,600 rpm of maximum output power and 42 N·m (4.3 kg·m, 31 ft·lb) of maximum torque.
|Type||4-stroke, OHV, V-twin|
|Displacement||679 cm2, (41.44 cu·in)|
|Max. horsepower||19.7 PS (14.5 kW; 19.4 HP) at 3,600 rpm|
|Max. torque||42 N·m (4.3 kg·m, 31 ft·lb)|
|Lubricating system||Splash system|
|Starting system||Recoil or electric starter|
|Fuel tank capacity||–|
|Fuel consumption||370 g/kWh|
|PTO shaft rotation||Counterclockwise (from PTO shaft side)|
Dimensions and Weight
|Length, mm (in)||462 mm (18.2 in)|
|Width, mm (in)||428 mm (16.9 in)|
|Height, mm (in)||456 mm (18.0 in)|
|Dry weight, kg (lb)||46.5 kg (102.5 lbs)|
|Maximum speed:||3,900 rpm|
|Idle speed:||1,440±140 rpm|
|Intake valve||0.10-0.15 mm (0.004-0.006 in)|
|Exhaust valve||0.15-0.20 mm (0.006-0.008 in)|
|Oil type||4-stroke engines oil|
|Oil capacity||1.2 L (1.27 US. qt, 1.06 Imp. qt.)|
|Spark plug gap||0.6-0.8 mm (0.024-0.031 in)|
|Spark plug torque||20 N·m; 2.0 kg·m; 14.7 ft·lb|
We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.
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