Oil Top Up - Zetor 6718

[bigtel]

Hi Everyone - sorry if this is a little of a daft question but where do I top up the oil on my Zetor 6718?

I have looked everywhere for a plug, screwtop or opening but I can not find anything. Can anyone give me a clue?

Thanks.

 

[grumpy]

engine or gearbox

 

[ricc]

for engine oil theres a screw plug on the housing that the centrifugal oil filter sits on
gearbox theres a filler on the top of the box near your right knee