Hi Azazello, your engine is 845 and the fan turns clockwise. The fan blades are supposed to pull air through the radiator. Looking at the way your blades are curved, I think it would be better to reverse the fan.
Looking at photos above before you painted the fan, one edge of each blade is cleaner than the other. The reason for that I think is that the clean edge is the cutting edge and the dirty edge is when the blade "throws" the air towards your engine block.
Perhaps this fan is for an anti-clockwise engine?