Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Model number of the unit? 13A1234G230 example
Each transmission has it's own brake. Does the rubbing seem worse on one side or the other? They are mechanical disc brakes with a caliper , disc and brake pads on each side. 150, 151, 152, 153, and 100 make the brake. see link below.
Brake caliper bolts, (2) can be loosened to free up the brakes, then the brake parts prayed with WD40 to free them up, test machine then re-tighten the bolts if all works.
Parking brake apply s the physical brakes! Linkage runs to both brake assemblies. I would loosen the two calipers and see if they won't release.
I see question still open, did you find problem?
Just as I suggested! Thanks for the reply, please rate to close!