My husqvarna z246 zero turn is not going in drive or reverse. I already asked but forgot to say what type.

Question edited for clarity, full 'make model (what it is)'.
Question moved from Cars and Trucks.

Some ideas here

https://www.google.com/search?q=Husqvarna+rz46i+drive+slipping

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Is it the exact same belt? Are you referring to the belt that drives the blades, or the shirt at the rear that operates the 2 Hydraulic Wheel Motors/Pumps? Let me know, I can help, I just dealt with a similar issue on mine(which is almost the same as yours)!

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sounds like a bent or missing belt guide or guard. check to see if they are close to the pulley. be sure pulley is not damaged

Husqvarna Z246 Briggs and Stratton Zero Turn Mower ...

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https://www.youtube.com/watch?v=Ohx8nxNrgNs
Feb 23, 2015 - Uploaded by SleEquipment
Husqvarna Z246 Zero Turn Lawn Mower 46" - 23 hp Briggs and Stratton Engine: Briggs and Stratton ...

These units use Hydraulic pumps for motivation. If the unit stopped all at one time, I suspect a drive belt came off.
For both pumps to fail at the same time would be very odd. Check the v-belt driving the wheel pumps.

no but the arms are adjustable... having an issue hitting reverse by chance ???

Not sure the problem, there are no gears on the drive system. This uses Hydro drive wheel units. If the belt is on and in good shape, check the lever linkage.

Jack up your machine safely and unscrew the bolts holding the blades on..then reverse this order..

if the leaver moves freely but wont move first check belt is on pulley and if so you have sheared off keyway on the pulley on top of drive axle remove pully replace keyway reinstall