Rato CB250 (RW167MM)

Rato CB250 (RW167MM)The Rato CB250 (RW167MM) is a 223.1 ml (13.6 cu-in) single-cylinder air-cooled 4-stroke internal combustion vertical motorcycle engine from Rato CB-series, manufactured by Chongqing RATO Holding (Group) CO., LTD.

The Rato CB250 engine uses the dual-cam valve for valve gear with chain transmission to improve the efficiency of valve gear and reduce the noise of complete machine; increased the diameter of the left crankshaft; capacitance discharge ignition system and electric or kick start. The engine is equipped with a 5-speed gearbox.

The engine cylinder bore is 65.5 mm (2.57 in) and piston stroke is 66.2 mm (2.60 in). The CB250 (RW167MM) produced 16.3 PS (12.0 kW; 16.1 HP) at 8,000 rpm of maximum horsepower and 17.0 N·m (1.73 kg·m, 12.5 ft·lb) at 6,500 rpm of torque.

General information

Engine Specifications
Model CB250 (RW167MM)
Type Vertical, four-stroke, single cylinder
Displacement 223.1 ml (13.6 cu-in)
Max. horsepower 16.3 PS (12.0 kW; 16.1 HP) at 8,000 rpm
Max. torque (crank PTO) 17.0 N·m (1.73 kg·m, 12.5 ft·lb) at 6,500 rpm
Clutch method Manual wet multi-plate
Gearshift method 5-speed gearshift
Cooling system Forced-air
Ignition system Capacitance discharge ignition (CDI)
Lubricating system Splash
Starting system Electric / kick
Fuel used Unleaded gasoline (octane number 86 or higher)
Fuel consumption 354 g/kw·h

Dimensions and Weight

Rato CB250 (RW167MM)
Length, mm (in) 357 (14.0)
Width, mm (in) 320 (12.6)
Height, mm (in) 437 (17.2)
Dry weight, kg (lb) 33 (74.9)

Service Information

Oil system
Oil capacity 1.0 L
Ignition system
Spark plug B7RTC
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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