Zongshen GB1000S

Zongshen GB1000SThe Zongshen GB1000S is a 1.0 L (999 cc, 61.0 cu·in) natural aspirated V-twin cylinder four-stroke air-cooled internal combustion small gasoline engine with a horizontal shaft, manufactured by Zongshen Power Co for pressure washers, generators, air compressors.

The Zongshen GB1000S engine has a V-twin cylinder, overhead valve (OHV) design, and electric starter. This engine used a carburetor fuel system, transistorized magneto ignition system, splash type lubricating system, and forced-air cooling system.

This engine produced 32.6 PS (24.0 kW; 32.2 HP) at 3,900 rpm of horsepower and 71 N·m (7.2 kg·m, 52.3 ft·lb) of torque.

General information

Engine Specifications
Engine model GB1000S
Engine type 4-stroke, OHV, V-twi
Displacement 999 cm3, (61.0 cu·in)
Max. horsepower 32.6 PS (24.0 kW; 32.2 HP) at 3,900 rpm
Max. torque 71 N·m (7.2 kg·m, 52.3 ft·lb) at rpm
Cooling system Forced air
Lubricating system Splash type
Ignition system Transistorized ignition
Fuel system Carburetor
Fuel consumption 360 g/kWh
Fuel used Unleaded gasoline (octane number 86 or higher)
Starting system Electric starter
PTO shaft rotation Counterclockwise (from PTO shaft side)
Dimensions (L x W X H) 515 x 465 x 575 mm (20.3 x 18.3 x 22.6 in)
Dry weight 54 kg (119 lbs)

Cylinder Block and Head

It has a 90.0 mm (3.54 in) cylinder bore and 78.5 mm (3.09 in) piston stroke.

Cylinder block
Cylinder bore: 90.0 mm (3.54 in)
Piston stroke: 78.5 mm (3.09 in)
Number of piston rings (compression / oil): 2/1
Crankshaft center distance: 39.25 mm (1.545 in)
Cylinder head
Valve arrangement: OHV

Service Data

Maximum speed: 3,900 rpm rpm
Idle speed: 1,650±150 rpm rpm
Oil system
Lubrication system: Splash
Oil type: 4-stroke engine oil
Recommended oil: SAE 10W-30
Oil capacity: 2.5 L (2.64 US. qt, 2.2 Imp. qt.)
Fuel system
Type: Carburetor
Ignition system
Type: Transistorized ignition
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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