Victor Nikulin

hi, this is the fill bolt I am referring to, marked on the image

once the shifter cover is removed you can see that there is some kind of lubrication present, my guess its a gear lube, however i wanted to drain or extract it and put in new one to the correct level.

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Hi, just got this 2008 motobishi 700 which is technically yamaha rhino. Going trough replacing fluids and can't find info on how to change oil/fluid for the chain drive or gearcase, whichever its being called. There is a fill screw on top of shifter gear - however i can't locate a dipstick or drain plug for that fluid - please point me in the right direction here. 

Thanks!