Zongshen GB200

Zongshen GB200 engineThe Zongshen GB200 is a 0.2 L (196 cc, 11.96 cu·in) natural aspirated single-cylinder four-stroke air-cooled internal combustion small gasoline engine with a horizontal shaft from GB-series, manufactured by Zongshen Power Co. for general-purpose applications.

The GB200 engine has a single-cylinder, overhead valve (OHV) design, and recoil starter. This general-purpose engine used a carburetor fuel system, transistorized magneto ignition system, splash type lubricating system, and forced-air cooling system. The ZS GB200 is equipped with a 2.6 L (0.69 US. gal. 0.57 Imp. gal.) fuel tank.

This engine produced 5.7 PS (4.2 kW; 5.6 HP) at 3,600 rpm of horsepower and 11.5 N·m (1.2 kg·m, 8.5 ft·lb) of peak torque.

General information

Engine Specifications
Engine model GB200
Engine type 4-stroke, OHV, single-cylinder
Displacement 196 cm3, (11.96 cu·in)
Max. horsepower 5.7 PS (4.2 kW; 5.6 HP) at 3,600 rpm
Max. torque 11.5 N·m (1.2 kg·m, 8.5 ft·lb)
Cooling system Forced air
Lubricating system Splash
Ignition system Transistorized ignition
Fuel system Carburetor
Fuel consumption 395 g/kWh
Fuel tank capacity 2.6 L (0.69 US. gal. 0.57 Imp. gal.)
Fuel used Unleaded gasoline (octane number 86 or higher)
Starting system Recoil starter
PTO shaft rotation Counterclockwise (from PTO shaft side)
Dimensions (L x W X H) 365 x 320 x 345 mm (14.4 x 12.6 x 13.6 in)
Dry weight 15.5 kg (34.2 lbs)

Cylinder Block and Head

Cylinder bore and piston stroke are 68.0 mm (2.68 in) and 54.0 mm (2.13 in), respectively. Compression ratio rating is 8.2:1.

Cylinder block
Compression ratio: 8.2:1
Cylinder bore: 68.0 mm (2.68 in)
Piston stroke: 54.0 mm (2.13 in)
Number of piston rings (compression / oil): 2/1
Number of main bearings: 2
Crankshaft center distance: 27.0 mm (1.065 in)
Cylinder head
Valve arrangement: OHV
Valves:: 2

Service Data

The 4-stroke engine oil with a viscosity of SAE 10W-30 is recommended for the ZS GB200, refilling oil capacity is 0.6 L (0.63 US. qt, 0.53 Imp. qt.). The valve clearance is 0.10-0.15 mm (0.004-0.006 in) for intake valves and 0.15-0.20 mm (0.006-0.008 in) for exhaust valves.

Engine
Maximum speed: 3,900 rpm
Idle speed: 1,800±200 rpm
Valve clearance
Intake valve clearance (COLD): 0.10-0.15 mm (0.004-0.006 in)
Exhaust valve clearance (COLD): 0.15-0.20 mm (0.006-0.008 in)
Oil system
Lubrication system: Splash
Oil type: 4-stroke engine oil
Recommended oil: SAE 10W-30
Oil capacity: 0.6 L (0.63 US. qt, 0.53 Imp. qt.)
Fuel system
Type: Carburetor
Ignition system
Type: Transistorized ignition
Ignition timing: 25°±2° B.T.D.C.
Spark plug gap: 0.6-0.8 mm (0.0236-0.0315 in)
Spark plug torque: 20 N·m (2 kg·m, 14.7 ft·lb)

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