Troy Bilt TB30 - does not move either in Forward / Reverse

[LMRS]

Taking the mower out for spring. Battery is charged, so it does start. However, I cannot get the mower to move forward or in reverse. I can push it if in neutral. I have no idea what could be wrong, this was running like a champ last year.
DOM 2017
Make TB30
Model Number 13A725JD066
Serial Number 1B157B20044

I have found nothing in my owner/operation manual which is helpful. I also THINK the blade is not engaging while the motor is on, however I am not positive. I did take the cover off the top of the deck, there is tension in belt for the blade when the blade is engaged, so I think I may be mistaken. So my real concern right not is it not moving when in gear.

 

[Suzie]

transmission belt that is what broke on mine

 

[cxbxr.3]

Check the release pin on the axle to make sure it's not depressed. If it is it won't allow the hydrolic fluid to build pressure and move the axle. Also belt, cotter pin check. I had the exact same one was under 6 foot of water for days still runs... Good luck