basically the same for every piece of equipment, you need to look at common wear and tear locations,, like pins, bushings, check for slop, broken welds, do grease fittings look like they were greased often, or is old dry grease about them?
next is how clean is the inside of machine, and I mean the area under the motor and floor boards, lift seat and look GOOD
a cleaner machine ,(as long as not just washed and made pretty for the sale) shows IMO< owner cared more for it than one filled with crap and debris,
are belly pans dented, gouged or beat up looking, rusty?? and so on!
next is actual engine bay, and motor itself,
do filters (motor, hydraulic;, and fuel filters look like they were JUST replaced, for sale, or have there been regular looking services, , again how clean or dirty is it? feel free to open the air filter and have a look, is it clean or dirty? as again this shows how often one care for machine IMO there is normal wear and tear and then there is little or poor care!like I said, lots of folks wash and clean things before a sale, so its up to you to look for signs of care before they made it pretty for the sale(if they did, not all folks do so)
before starting machine, or trying, check rad coolant, what color is it, is it full??
then how does motor sound when idling, any smoke, then when at higher RPM's, same, any smoke, ? any funny sounds?
how are fluid levels?, any funky looking color to them, signs of any water in things, check, BOTH before starting and after running a bit!
I believe the LS series has dip sticks under seat for drive pumps, so look and check them too if there there!
cheaper to inspect these things before buying than after!
Once machine is running, time to check other things, like functions, how smooth do controls work, how strong do things feel, will it lift front tires using bucket and hold it there at a lower idle??, when lifting boom, do it start to drift/sag/fall back down?, before shutting machine off, lift bucket a few inches, and leave there, then after its off, how long does it take to lower itself down??
do any cylinders show signs of leaks, if so, is there damage to cylinders them self, or just old seals?? seals cheap, new cylinders NOT cheap!
how do hoses look, recently replaced, , or any dry rot?
this is a 25 yr old machine so< if any hoses look iffy, NEW hoses are not cheap and can add up fast to a bunch of cash, and cost even more if your paying someone to install them!
as for how well a machine is or not, in soft terrain, if you have very soggy ground, you might consider adding over the tire tracks, they make a huge difference in both flotation and traction, so food for thought
as for any known issues with this model
I know of none, but am no expert on this model either!, I know they made the LS series a pretty long time,. and this is one of the very earlier ones, I think in 2000 is the very first yr of the model actually!
that said, I know of no major issues with it
it all sort of comes down to how well the machine was cared for or not,
were PM's done as supposed to be preformed? and there is no way to know 100% they were, minus, looking at it and guessing! based on conditions you see now!
as for starting issue??
MY guess , or possible things
would be, bad starter, bad ground/power to starter, be it a bad ground from battery or power supply to fuse box.and down stream, maybe a starter relay???
working about cows, can IMO have corrosion issues, or just age causes them too!
so could be a simple fix , but again its a guess on my part!
3800 hours really isn't a ton of hour, on motor, so it should be OK on compression based on hours
that is if the hour meter is correct
lots of old machines, them Hr meters have long since stopped working, or were working part time, or, someone could replace them,, so, I never truly trust them, I fall back on overall condition of things more to tell how many hrs are on machine
lastly, 12 K is actually a very good price for the age, and model , or is in my area, prices have actually gone up, not down on them the past 8+ yrs or so, or again in MY area they have!
, lots of these older machines are bringing top dollar due to folks not wanting more modern ones with emissions and so many electrical gadgets
BUT it also comes down to condition and what is actually wrong with it , or what it will soon need, tires, hoses, seals, bushing, electrical work, starter?? or???
if you don't know how to really look a machine over, I would strongly suggest bringing some one that does with you when going to look at it,experience here is worth paying someone (a reasonable fee if needed)
experience is a valuable tool, that can save you thousands, as things on equipment can add up really fast if you do not have ability to see them,
not saying an experienced person an spot everything, but it will up your odds of getting a decent used machine
sorry o long post but maybe will help you and or others !