I backed out the brake tensioner nut, thinking that might slacken the clutch engagement. Will it work? Don't know yet. The mower is up on jacks and it has been raining something fierce all morning and is likely to continue into this evening. Lots of Thunder&Lighting. Quite the show.
I briefly also noticed that brake spring and the brake and clutch rod all the same rod with the spring on the rod with jammed locknuts for the brake adjust ONLY.
The brake on this one will slide the rear tires if going fast and thromp on the brake, then just slightly release the brake/clutch pedal and it pops the neck and just going from memory as the brake is let off that same rod engauges the transaxle on the pivot lever on side of transaxle. (therefore no clutch adjustment other than weaken the spring or hope for some eventual motion drive belt slippage.
Might be a critical adjustment between having a brake and getting a softer clutch. When I seen only brake adjustment mentioned in the manual and no clutch adjustment I was also working on another mower and never went back to try and back off on the spring or find a weaker spring or ??????????