Transmission /hydro static not engaging.

Cubcadet LTX1045 . Transmission will not go forward or reverse .

The lever in the back that you pull in order to push the mower. Doesn't matter if it's pulled or not I can still push it. So I checked and it's hooked up and the other linkage is all in place. Drive belt is almost new.

crwdns2893858:0crwdne2893858:0 crwdns2893862:0crwdne2893862:0

crwdns2894050:0crwdne2894050:0

crwdns2889612:0crwdne2889612:0 0
crwdns2892346:0crwdne2892346:0