Final drive and valve clearance check?
Been lurking around the forums for a while, and brought home a 2016 700 M4 a couple months ago and it's a great machine. I'd like to do the service myself, and while I'm capable I'm definitely not very knowledgeable about machinery in general.
I've seen people suggest that the "final drive" or "final drive fluid" be checked during service, but I haven't seen anything that shows how to do that. A search didn't turn anything up for me, so I thought I'd ask here. I just changed the oil and replaced the stock air filter with a K&N, and it recommended the final drive check but I have no idea how.
And while I'm asking, how do you guys check valve clearances, and what does that do exactly? I've also seen a few folks mention that they do this themselves, so I wanted to ask what was involved.
I'd appreciate any help, thank you!