I am in the process of buying a LT250R. I was wondering if anyone has any common things to look for. Thanks!!!

 

Check the swing arm for cracks around the pinch bolts. If you plan on jumping on hard pack plan on buying a stronger swing arm.

 

check around the front shock mounts on the frame for any cracks, that's where a friend's broke.
also check:
front & rear suspension for play(looseness in any way- side to side, up/down, etc..)
any suspension mounts for cracks,
suspension components for bent parts, (on '85-86 q-racers, the swingarm for cracks arount the axle carrier)
frame(esp. underneath) for bent tubes & broken welds
steering for play(very small amt is okay)
rear axle bearings for play,
air filter condition & mounting(indicates motor condition & how the owner cared for it)
coolant in radiator
tranny oil... (if its white/grey you have water in it, any metal shavings, etc.. is bad)
if you have the tools, do a compression check.
finally...
ride it, listen to how the motor runs, & decide if you are ready to cope with whatever problems may be there.

 

DEFINITLY look for cracks on the swingarm!!!!!!!!
This is a VERY common problem with the 85-86 LT's.
87-up had the box type housing. MUCH better!!
My brother used to have an 86, and we had to reinforce the pinch area of the swingarm to avoid a very expensive replacement.