VIPER 150 Engine 

Well, finally this series came to an end)
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Marking described engine includes alphanumeric designation - 162FMJ
The figure "1" means that the engine has a single cylinder;
The numbers "62" indicate that the diameter of the cylinder of the engine 62mm;
The letter «F» indicates that the engine is air-cooled;
The letter "M" means that the motor bike;
The letter «J» describes the displacement - 150sm³.
The remaining characters in the marking engine are general background information on the place and date of manufacture, manufacturer information.
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