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
ModelCB250 (RW167MM)
TypeVertical, four-stroke, single cylinder
Displacement223.1 ml (13.6 cu-in)
Max. horsepower16.3 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 methodManual wet multi-plate
Gearshift method5-speed gearshift
Cooling systemForced-air
Ignition systemCapacitance discharge ignition (CDI)
Lubricating systemSplash
Starting systemElectric / kick
Fuel usedUnleaded gasoline (octane number 86 or higher)
Fuel consumption354 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 capacity1.0 L
Ignition system
Spark plugB7RTC
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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