Hello!
Could anyone show with pictuses or with a diagramm, where ise the plug for the crankcase located for letting oil out When Exchanging oil?
It is not on the bottom like in the gasoline models.

this is the bolt in the back of the crankcase Could it be the bleed nut?



What is this bolt in front of the engine?


Also can anyone identify These parts, oil filters from a maybe?

 

The first picture looks like what we call the drain plug. Next picture looks like the oil pressure relief valve. Did you undo it? The parts in your hand look like the relief valve.