I could release clutch bar but tiller was still engaged.
Thought clutch needed adjusted but it didn't help.
Found out that the large nut holding the smaller flywheel bracket to transmission had backed out 1/4 inch. (Nut behind the large flywheel about 3-4 inches below the large flywheel spindle)
Tightened large nut and it works great now.
Ed Atkins
June 2020