Chosen Solution
Mower turns on but will go neither forward nor backward. Just had it serviced at 25 hours last week. The pull knob for pushing the mower is not engaged. It is in position for the mower to be self propelling.
check and see if the “axle key” are still in
There is a vacuum hose going from the front to back on the YV 4000 Craftsman . It rides above one of the pulleys on the deck (left side) and the hose can be cut into by the pulley. You might replace the hose (or tape it up) then use a wire tie (not too tight) or something to hold the hose up.
