Rademamj1 and Everyone Else,
Thank you for the great DIY advice! Rademanmj1 your reply was especially appreciated for its detail.
I upgraded my computer two weeks ago and the new OS apparently decided notifications from tractorbynet.com were junk mail - and also removed my "junk mail" folder - so I didn't see all these replies earlier. I fixed those two annoyances, and so, heartened by the "you can do it" encouragement here, I WILL save myself the $800 and tackle the 400 hour service on my Kiot DK40. I watched some YouTube videos that were helpful these past two weeks. None specifically for my model about the front axle change, but close to it. Several on the hydraulic fluid change.
Regarding the various levels of distrust towards dealerships expressed...I began my post by mentioning I have some about mine (based on my latest lawn mower repair - didn't mention why in that post) doing the work they say they do. IF I find that my filters are still "painted on" as they may have been at the factory I will know this same dealership did not do the 50 hour comprehensive new tractor service I paid $900 for five years ago.
I'm in a muscle car forum and on the subject of distrusting repair shops, somebody said they take several photographs of their car after parking at the dealership. This to prove that any damage is the fault of the shop. Somebody else nicks their oil filter so they can tell if it was changed. This last because to keep the warranty the oil and filter has to be changed every six months, no matter how few miles it may have been driven.
I live in Northern Kentucky and don't plan on using my tractor for months. It's inside a heated garage (doubles as my man cave) so I'm lucky to be able to do this in relative comfort and at my own pace.
Thanks again,
Rhino