I've attached a picture of the little beautyYou'll have to Post pictures of the whole tractor, as I have a sneaking feeling it's really not an L185, more like an L1501, They are almost the same.
The Knob on the left is a decompression lever, you engage it to let the motor spin faster, then you disengage it to let it fire.
This feature has pretty much become not needed as newer batteries have rendered it obsolete, because they will spin the motor fast enough and long enough to easily start.
The round know is a mystery, it might be a parking brake paw.
Yeah I will do a full investigation to the best of my mechanical knowledge. The previous owner mentioned something about a hydraulic output/connection on the back of that tractor that was used to tilt a trailer hydraulically (is that a word? ). Perhaps that's what it's for.I would recommend following the rod attached to the round knob to where and what it goes to. I have a feeling it may be an aftermarket add-on or modification. Is it possible someone has installed radiator shutters due to your climate? It is also possible it has something to do with the loader that is installed on your machine.
Yeah the previous owner built the loader with parts he "borrowed" from his job at the Swedish loader manufacturer ÅLÖ. A bit like the Johnny Cash song "One piece at a time". It's slow but strong.WOW, that is one heck of a altered and fixed up L185!
I have a sneaking suspicion given it's location it should have something to do with engine speed.