DLS 3500 won't go into gear when stepping on the gas

Check drive belt make sure its good
Does reverse work ?

No forward or reverse, hydrostatic drive, no belt, thanks, it runs just won't go

You telling me the belts okay.
Make sure the release in the rear is engaged

Wasn't aware that the hydro static had a drive belt, but I am now, the belt cam,e off will try and put it back on tomorrow, thanks