Hey guys! Just purchased a used 150cc yamoto dirt bike.. I've been having troubles finding info about the oil change . It says a 19mm size drain bolt on the left side of the motor , is this correct ? 19mm seems a little small for what people are saying .. Thanks guys!

 

There should be a bolt on the bottom of the engine that a 19mm wrench fits.

 

Okay I will try that .. Thanks !!