Very many thanks Rushes. Your hint, although not EXACTLY the case, gave me the push to solve my stuckness.
My problem was that I could not operate the lever at all – neither push nor pull it. The Robot is standing VERY close to the press. Every time I got the up-down arrow it was on the robot. I had no idea whatsoever that you could EVER get that up-down arrow on an OBJECT! All that happened was that the robot got taller and shorter..
I completely missed the actual up-down arrow on the lever handle. What you have to do is to get that up down arrow onto the lever handle and
DRAG it up and down 2 or 3 times to actually pump out the oil.
As far as I’ve got in the game this is the only case where you have to use the up-down arrow on an object and not on the robot itself (IMHO this is rather ‘unfair’).
N.B. One of the several shortcomings of the game is that you can hardly see the inventory items – They are very small, dark and on a black background. There is no way of magnifying or clicking a close-up or even reading an identifying label.
Even when I eventually succeeded in obtaining the sunflower seed oil there was no way of knowing if the oil can was empty, full, full of black oil, or full of sunflower oil.
Please see -
http://www.gameboomers.com/forum/ubbthreads.php/topics/602295.html#Post602295