Disclaimer: Always refer to the specific manual for your engine's serial number. Variations exist between manufacturers.
In short, the 162FMJ is a 149.4cc (150cc), 4-stroke, single-cylinder, air-cooled, overhead valve (OHV) engine. It is a direct descendant of the Honda CG150 design. 162fmj Engine Service Manual
It looks like you’re referencing a engine — a common horizontal single-cylinder, air-cooled, 4-stroke engine found in many Chinese-made pit bikes, ATVs, go-karts, and small utility motorcycles (e.g., Lifan, Zongshen, Loncin). Disclaimer: Always refer to the specific manual for
: Some technical libraries or bookstores might carry a copy of the manual or be able to order it for you. the 162FMJ is a 149.4cc (150cc)