While moving some logs around yesterday the range selector lever flopped around so now I could not get out of low range.  Crawled under to see what caused the problem.  The roll pin holding the lever to the shaft linkage snapped.  Luckily I had a captive pin with a bale attached so used that after turning it down a bit to fit the hole.  Tractor has about 500 hours.  Easy fix.  Maybe this can help others with similar problem. Bob