It wouldn't be so much of a case of worn out parts, as it would be to take various things apart, clean, inspect, re-lubricate and reassemble.
Remember you have a 26 year old vehicle, how many vehicles this age do you see on the streets where you reside ?
It can be a bit labor intensive, to get all the items accomplished, then you don't have to be concerned about them for some time .
Clean, inspect, re-grease the wheel bearings, steering head bearings, swing-arm bearings.
Replace the OEM rubber brake lines.
Check the condition of the front brake pads.
I know it's not recommended, but cleaning a re-lubing all of the control cables (throttle, choke).
Clean and lube the speedometer drive cable, and replace the rubber boot that goes over the cable at the transmission .
Check to see if you have a black and gray ignition coil, if you do, plan on replacing it, because it's a problematic part .
Removing the starter, for a good cleaning, inspection, and re-lubrication .
Check the condition of the alternator brushes.
Replace the rubber parts in the carburetors .
Transmission input spline lube .
Replace the rubber boot over the u-joint area, and the throw out bearing boot at the back of the transmission .
Remove the rear brake pedal, clean and re-lubricate the bushing/bearing .
While you are this far, remove the clutch and check for wear.
Replace the rear main seal and oil pump cover o-ring.
If you have the OEM BOGE shocks, it would be a good idea to start looking for a replacement set.
Clean inspect and re-grease the final drive splines, and rear wheel splines, check the final drive output seal, and the brake cam for oil leakage , check the brake shoes for wear and oil contamination.
How old are the tires, the is a 4 digit code molded into the side wall, it will look something like : 1409, which would be a tire manufactured in the 14th week of 2009 .